message stringlengths 2 11.9k | message_type stringclasses 2 values | message_id int64 0 1 | conversation_id int64 137 108k | cluster float64 18 18 | __index_level_0__ int64 274 217k |
|---|---|---|---|---|---|
Provide a correct Python 3 solution for this coding contest problem.
A: A-Z Cat / A-Z Cat
story
Aizunyan is a second-year student who belongs to the programming contest club of Wakagamatsu High School, commonly known as the Prokon club. It's so cute. Aizu Nyan was asked by her friend Joy to take care of her cat. It is a rare cat called A-Z cat. Aizunyan named the A-Z cat he had entrusted to him as "Aizunyan No. 2" (without permission), and he was very much loved.
A-Z cats are said to prefer strings that meet certain conditions. Then, when Aizunyan gave a character string as a trial, Aizunyan No. 2 had a satisfying expression after cutting a part of the character string with his nails. Apparently, I'm trying to rewrite it to my favorite character string.
D, who is crazy about Aizu Nyan, who is cute like an angel, found out the character string conditions that A-Z Cat likes for Aizu Nyan. It is a string in which'A'and'Z'are repeated alternately, and a string that starts with'A' and ends with'Z'. The A-Z cat is so smart that it tries to convert it to a string of your choice with minimal erasing. D, who wants to look good, decided to write a program to find out what kind of string the A-Z cat would convert from a given string consisting only of'A'and'Z'.
problem
Given a string S consisting only of uppercase letters. By deleting any number of S characters as much as you like, you can create a string in which'A'and'Z' appear alternately, and start with'A' and end with'Z'. Find the character string obtained when the number of deletions is minimized.
Input format
The string S is given on one line as input. S consists of uppercase letters only and satisfies 1 ≤ | S | ≤ 20.
Output format
Output the string that is obtained by deleting the minimum number of characters for S, in which'A'and'Z' appear alternately, and start with'A' and end with'Z' on one line. If no character string that meets the conditions is obtained by deleting any character, output -1 on one line.
Input example 1
AIZUNYAN PEROPERO
Output example 1
AZ
Input example 2
AZAZ
Output example 2
AZAZ
Input example 3
ZDDYAZAWABDDZAZPIDDA
Output example 3
AZAZAZ
Input example 4
ZZZZAAAAAA
Output example 4
-1
Example
Input
AIZUNYANPEROPERO
Output
AZ | instruction | 0 | 98,558 | 18 | 197,116 |
"Correct Solution:
```
if __name__ == "__main__":
inputStrings = str(input())
outputStrings = []
isNextA = True
for i in inputStrings:
if isNextA == True and i == "A":
outputStrings.append(i)
isNextA = False
elif isNextA == False and i == "Z":
outputStrings.append(i)
isNextA = True
if outputStrings != []:
if outputStrings[-1] == "A":
outputStrings.pop(-1)
output = str()
for i in outputStrings:
output += i
if len(output) > 1:
print(output)
else:
print("-1")
``` | output | 1 | 98,558 | 18 | 197,117 |
Provide a correct Python 3 solution for this coding contest problem.
The cat Snuke wants to play a popular Japanese game called ÅtCoder, so Iroha has decided to teach him Japanese.
When counting pencils in Japanese, the counter word "本" follows the number. The pronunciation of this word varies depending on the number. Specifically, the pronunciation of "本" in the phrase "N 本" for a positive integer N not exceeding 999 is as follows:
* `hon` when the digit in the one's place of N is 2, 4, 5, 7, or 9;
* `pon` when the digit in the one's place of N is 0, 1, 6 or 8;
* `bon` when the digit in the one's place of N is 3.
Given N, print the pronunciation of "本" in the phrase "N 本".
Constraints
* N is a positive integer not exceeding 999.
Input
Input is given from Standard Input in the following format:
N
Output
Print the answer.
Examples
Input
16
Output
pon
Input
2
Output
hon
Input
183
Output
bon | instruction | 0 | 99,261 | 18 | 198,522 |
"Correct Solution:
```
m = 'pphbhhphph'
print(m[int(input())%10] + 'on')
``` | output | 1 | 99,261 | 18 | 198,523 |
Provide a correct Python 3 solution for this coding contest problem.
The cat Snuke wants to play a popular Japanese game called ÅtCoder, so Iroha has decided to teach him Japanese.
When counting pencils in Japanese, the counter word "本" follows the number. The pronunciation of this word varies depending on the number. Specifically, the pronunciation of "本" in the phrase "N 本" for a positive integer N not exceeding 999 is as follows:
* `hon` when the digit in the one's place of N is 2, 4, 5, 7, or 9;
* `pon` when the digit in the one's place of N is 0, 1, 6 or 8;
* `bon` when the digit in the one's place of N is 3.
Given N, print the pronunciation of "本" in the phrase "N 本".
Constraints
* N is a positive integer not exceeding 999.
Input
Input is given from Standard Input in the following format:
N
Output
Print the answer.
Examples
Input
16
Output
pon
Input
2
Output
hon
Input
183
Output
bon | instruction | 0 | 99,262 | 18 | 198,524 |
"Correct Solution:
```
N = int(input()) % 10
a = ["pon","pon","hon","bon","hon","hon","pon","hon","pon","hon"]
print(a[N])
``` | output | 1 | 99,262 | 18 | 198,525 |
Provide a correct Python 3 solution for this coding contest problem.
The cat Snuke wants to play a popular Japanese game called ÅtCoder, so Iroha has decided to teach him Japanese.
When counting pencils in Japanese, the counter word "本" follows the number. The pronunciation of this word varies depending on the number. Specifically, the pronunciation of "本" in the phrase "N 本" for a positive integer N not exceeding 999 is as follows:
* `hon` when the digit in the one's place of N is 2, 4, 5, 7, or 9;
* `pon` when the digit in the one's place of N is 0, 1, 6 or 8;
* `bon` when the digit in the one's place of N is 3.
Given N, print the pronunciation of "本" in the phrase "N 本".
Constraints
* N is a positive integer not exceeding 999.
Input
Input is given from Standard Input in the following format:
N
Output
Print the answer.
Examples
Input
16
Output
pon
Input
2
Output
hon
Input
183
Output
bon | instruction | 0 | 99,263 | 18 | 198,526 |
"Correct Solution:
```
n = input()
nl = n[-1]
if nl in "24579":
print("hon")
elif nl in "0168":
print("pon")
else:
print("bon")
``` | output | 1 | 99,263 | 18 | 198,527 |
Provide a correct Python 3 solution for this coding contest problem.
The cat Snuke wants to play a popular Japanese game called ÅtCoder, so Iroha has decided to teach him Japanese.
When counting pencils in Japanese, the counter word "本" follows the number. The pronunciation of this word varies depending on the number. Specifically, the pronunciation of "本" in the phrase "N 本" for a positive integer N not exceeding 999 is as follows:
* `hon` when the digit in the one's place of N is 2, 4, 5, 7, or 9;
* `pon` when the digit in the one's place of N is 0, 1, 6 or 8;
* `bon` when the digit in the one's place of N is 3.
Given N, print the pronunciation of "本" in the phrase "N 本".
Constraints
* N is a positive integer not exceeding 999.
Input
Input is given from Standard Input in the following format:
N
Output
Print the answer.
Examples
Input
16
Output
pon
Input
2
Output
hon
Input
183
Output
bon | instruction | 0 | 99,264 | 18 | 198,528 |
"Correct Solution:
```
a = input()[-1]
if a in "24579":
print("hon")
elif a in "0168":
print("pon")
else:
print("bon")
``` | output | 1 | 99,264 | 18 | 198,529 |
Provide a correct Python 3 solution for this coding contest problem.
The cat Snuke wants to play a popular Japanese game called ÅtCoder, so Iroha has decided to teach him Japanese.
When counting pencils in Japanese, the counter word "本" follows the number. The pronunciation of this word varies depending on the number. Specifically, the pronunciation of "本" in the phrase "N 本" for a positive integer N not exceeding 999 is as follows:
* `hon` when the digit in the one's place of N is 2, 4, 5, 7, or 9;
* `pon` when the digit in the one's place of N is 0, 1, 6 or 8;
* `bon` when the digit in the one's place of N is 3.
Given N, print the pronunciation of "本" in the phrase "N 本".
Constraints
* N is a positive integer not exceeding 999.
Input
Input is given from Standard Input in the following format:
N
Output
Print the answer.
Examples
Input
16
Output
pon
Input
2
Output
hon
Input
183
Output
bon | instruction | 0 | 99,265 | 18 | 198,530 |
"Correct Solution:
```
N = input()
if N[-1] == '3':
print('bon')
elif N[-1] in '0168':
print('pon')
else:
print('hon')
``` | output | 1 | 99,265 | 18 | 198,531 |
Provide a correct Python 3 solution for this coding contest problem.
The cat Snuke wants to play a popular Japanese game called ÅtCoder, so Iroha has decided to teach him Japanese.
When counting pencils in Japanese, the counter word "本" follows the number. The pronunciation of this word varies depending on the number. Specifically, the pronunciation of "本" in the phrase "N 本" for a positive integer N not exceeding 999 is as follows:
* `hon` when the digit in the one's place of N is 2, 4, 5, 7, or 9;
* `pon` when the digit in the one's place of N is 0, 1, 6 or 8;
* `bon` when the digit in the one's place of N is 3.
Given N, print the pronunciation of "本" in the phrase "N 本".
Constraints
* N is a positive integer not exceeding 999.
Input
Input is given from Standard Input in the following format:
N
Output
Print the answer.
Examples
Input
16
Output
pon
Input
2
Output
hon
Input
183
Output
bon | instruction | 0 | 99,266 | 18 | 198,532 |
"Correct Solution:
```
N=int(input())
if N%10==3:
print("bon")
elif N%10 in [0,1,6,8]:
print("pon")
else:
print("hon")
``` | output | 1 | 99,266 | 18 | 198,533 |
Provide a correct Python 3 solution for this coding contest problem.
The cat Snuke wants to play a popular Japanese game called ÅtCoder, so Iroha has decided to teach him Japanese.
When counting pencils in Japanese, the counter word "本" follows the number. The pronunciation of this word varies depending on the number. Specifically, the pronunciation of "本" in the phrase "N 本" for a positive integer N not exceeding 999 is as follows:
* `hon` when the digit in the one's place of N is 2, 4, 5, 7, or 9;
* `pon` when the digit in the one's place of N is 0, 1, 6 or 8;
* `bon` when the digit in the one's place of N is 3.
Given N, print the pronunciation of "本" in the phrase "N 本".
Constraints
* N is a positive integer not exceeding 999.
Input
Input is given from Standard Input in the following format:
N
Output
Print the answer.
Examples
Input
16
Output
pon
Input
2
Output
hon
Input
183
Output
bon | instruction | 0 | 99,267 | 18 | 198,534 |
"Correct Solution:
```
n=int(input())
x=["pon","pon","hon","bon","hon","hon","pon","hon","pon","hon"]
print(x[n%10])
``` | output | 1 | 99,267 | 18 | 198,535 |
Provide a correct Python 3 solution for this coding contest problem.
The cat Snuke wants to play a popular Japanese game called ÅtCoder, so Iroha has decided to teach him Japanese.
When counting pencils in Japanese, the counter word "本" follows the number. The pronunciation of this word varies depending on the number. Specifically, the pronunciation of "本" in the phrase "N 本" for a positive integer N not exceeding 999 is as follows:
* `hon` when the digit in the one's place of N is 2, 4, 5, 7, or 9;
* `pon` when the digit in the one's place of N is 0, 1, 6 or 8;
* `bon` when the digit in the one's place of N is 3.
Given N, print the pronunciation of "本" in the phrase "N 本".
Constraints
* N is a positive integer not exceeding 999.
Input
Input is given from Standard Input in the following format:
N
Output
Print the answer.
Examples
Input
16
Output
pon
Input
2
Output
hon
Input
183
Output
bon | instruction | 0 | 99,268 | 18 | 198,536 |
"Correct Solution:
```
s =int(list(input())[-1])
if s in [2,4,5,7,9]:print('hon')
elif s in [0,1,6,8]:print('pon')
else:print('bon')
``` | output | 1 | 99,268 | 18 | 198,537 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The cat Snuke wants to play a popular Japanese game called ÅtCoder, so Iroha has decided to teach him Japanese.
When counting pencils in Japanese, the counter word "本" follows the number. The pronunciation of this word varies depending on the number. Specifically, the pronunciation of "本" in the phrase "N 本" for a positive integer N not exceeding 999 is as follows:
* `hon` when the digit in the one's place of N is 2, 4, 5, 7, or 9;
* `pon` when the digit in the one's place of N is 0, 1, 6 or 8;
* `bon` when the digit in the one's place of N is 3.
Given N, print the pronunciation of "本" in the phrase "N 本".
Constraints
* N is a positive integer not exceeding 999.
Input
Input is given from Standard Input in the following format:
N
Output
Print the answer.
Examples
Input
16
Output
pon
Input
2
Output
hon
Input
183
Output
bon
Submitted Solution:
```
N=input()
x=N[-1]
print('bon' if x=='3' else 'pon' if x in '0168' else 'hon')
``` | instruction | 0 | 99,269 | 18 | 198,538 |
Yes | output | 1 | 99,269 | 18 | 198,539 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The cat Snuke wants to play a popular Japanese game called ÅtCoder, so Iroha has decided to teach him Japanese.
When counting pencils in Japanese, the counter word "本" follows the number. The pronunciation of this word varies depending on the number. Specifically, the pronunciation of "本" in the phrase "N 本" for a positive integer N not exceeding 999 is as follows:
* `hon` when the digit in the one's place of N is 2, 4, 5, 7, or 9;
* `pon` when the digit in the one's place of N is 0, 1, 6 or 8;
* `bon` when the digit in the one's place of N is 3.
Given N, print the pronunciation of "本" in the phrase "N 本".
Constraints
* N is a positive integer not exceeding 999.
Input
Input is given from Standard Input in the following format:
N
Output
Print the answer.
Examples
Input
16
Output
pon
Input
2
Output
hon
Input
183
Output
bon
Submitted Solution:
```
n = input()
print('bon' if n[-1]=='3' else 'pon' if n[-1] in ['0','1','6','8'] else 'hon')
``` | instruction | 0 | 99,270 | 18 | 198,540 |
Yes | output | 1 | 99,270 | 18 | 198,541 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The cat Snuke wants to play a popular Japanese game called ÅtCoder, so Iroha has decided to teach him Japanese.
When counting pencils in Japanese, the counter word "本" follows the number. The pronunciation of this word varies depending on the number. Specifically, the pronunciation of "本" in the phrase "N 本" for a positive integer N not exceeding 999 is as follows:
* `hon` when the digit in the one's place of N is 2, 4, 5, 7, or 9;
* `pon` when the digit in the one's place of N is 0, 1, 6 or 8;
* `bon` when the digit in the one's place of N is 3.
Given N, print the pronunciation of "本" in the phrase "N 本".
Constraints
* N is a positive integer not exceeding 999.
Input
Input is given from Standard Input in the following format:
N
Output
Print the answer.
Examples
Input
16
Output
pon
Input
2
Output
hon
Input
183
Output
bon
Submitted Solution:
```
n = int(input()[-1])
print(['pon', 'pon', 'hon', 'bon', 'hon', 'hon', 'pon', 'hon', 'pon', 'hon'][n])
``` | instruction | 0 | 99,271 | 18 | 198,542 |
Yes | output | 1 | 99,271 | 18 | 198,543 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The cat Snuke wants to play a popular Japanese game called ÅtCoder, so Iroha has decided to teach him Japanese.
When counting pencils in Japanese, the counter word "本" follows the number. The pronunciation of this word varies depending on the number. Specifically, the pronunciation of "本" in the phrase "N 本" for a positive integer N not exceeding 999 is as follows:
* `hon` when the digit in the one's place of N is 2, 4, 5, 7, or 9;
* `pon` when the digit in the one's place of N is 0, 1, 6 or 8;
* `bon` when the digit in the one's place of N is 3.
Given N, print the pronunciation of "本" in the phrase "N 本".
Constraints
* N is a positive integer not exceeding 999.
Input
Input is given from Standard Input in the following format:
N
Output
Print the answer.
Examples
Input
16
Output
pon
Input
2
Output
hon
Input
183
Output
bon
Submitted Solution:
```
N = input()
print("hon" if N[-1] in "24579" else "pon" if N[-1] in "0168" else "bon")
``` | instruction | 0 | 99,272 | 18 | 198,544 |
Yes | output | 1 | 99,272 | 18 | 198,545 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The cat Snuke wants to play a popular Japanese game called ÅtCoder, so Iroha has decided to teach him Japanese.
When counting pencils in Japanese, the counter word "本" follows the number. The pronunciation of this word varies depending on the number. Specifically, the pronunciation of "本" in the phrase "N 本" for a positive integer N not exceeding 999 is as follows:
* `hon` when the digit in the one's place of N is 2, 4, 5, 7, or 9;
* `pon` when the digit in the one's place of N is 0, 1, 6 or 8;
* `bon` when the digit in the one's place of N is 3.
Given N, print the pronunciation of "本" in the phrase "N 本".
Constraints
* N is a positive integer not exceeding 999.
Input
Input is given from Standard Input in the following format:
N
Output
Print the answer.
Examples
Input
16
Output
pon
Input
2
Output
hon
Input
183
Output
bon
Submitted Solution:
```
a=input()
b=a[-1]
if b=="2" or "4" or "5" or "7" or "9":
print("hon")
elif b=="0" or b=="1" or b=="6" or b=="8":
print("pon")
else:
print("bon")
``` | instruction | 0 | 99,273 | 18 | 198,546 |
No | output | 1 | 99,273 | 18 | 198,547 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The cat Snuke wants to play a popular Japanese game called ÅtCoder, so Iroha has decided to teach him Japanese.
When counting pencils in Japanese, the counter word "本" follows the number. The pronunciation of this word varies depending on the number. Specifically, the pronunciation of "本" in the phrase "N 本" for a positive integer N not exceeding 999 is as follows:
* `hon` when the digit in the one's place of N is 2, 4, 5, 7, or 9;
* `pon` when the digit in the one's place of N is 0, 1, 6 or 8;
* `bon` when the digit in the one's place of N is 3.
Given N, print the pronunciation of "本" in the phrase "N 本".
Constraints
* N is a positive integer not exceeding 999.
Input
Input is given from Standard Input in the following format:
N
Output
Print the answer.
Examples
Input
16
Output
pon
Input
2
Output
hon
Input
183
Output
bon
Submitted Solution:
```
N = str(input())
num = N[-1]
if num == 3:
print('bon')
elif num == 0 or num == 1 or num == 6 or num == 8:
print('pon')
else:
print('hon')
``` | instruction | 0 | 99,274 | 18 | 198,548 |
No | output | 1 | 99,274 | 18 | 198,549 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The cat Snuke wants to play a popular Japanese game called ÅtCoder, so Iroha has decided to teach him Japanese.
When counting pencils in Japanese, the counter word "本" follows the number. The pronunciation of this word varies depending on the number. Specifically, the pronunciation of "本" in the phrase "N 本" for a positive integer N not exceeding 999 is as follows:
* `hon` when the digit in the one's place of N is 2, 4, 5, 7, or 9;
* `pon` when the digit in the one's place of N is 0, 1, 6 or 8;
* `bon` when the digit in the one's place of N is 3.
Given N, print the pronunciation of "本" in the phrase "N 本".
Constraints
* N is a positive integer not exceeding 999.
Input
Input is given from Standard Input in the following format:
N
Output
Print the answer.
Examples
Input
16
Output
pon
Input
2
Output
hon
Input
183
Output
bon
Submitted Solution:
```
print(123)
``` | instruction | 0 | 99,275 | 18 | 198,550 |
No | output | 1 | 99,275 | 18 | 198,551 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The cat Snuke wants to play a popular Japanese game called ÅtCoder, so Iroha has decided to teach him Japanese.
When counting pencils in Japanese, the counter word "本" follows the number. The pronunciation of this word varies depending on the number. Specifically, the pronunciation of "本" in the phrase "N 本" for a positive integer N not exceeding 999 is as follows:
* `hon` when the digit in the one's place of N is 2, 4, 5, 7, or 9;
* `pon` when the digit in the one's place of N is 0, 1, 6 or 8;
* `bon` when the digit in the one's place of N is 3.
Given N, print the pronunciation of "本" in the phrase "N 本".
Constraints
* N is a positive integer not exceeding 999.
Input
Input is given from Standard Input in the following format:
N
Output
Print the answer.
Examples
Input
16
Output
pon
Input
2
Output
hon
Input
183
Output
bon
Submitted Solution:
```
n = input()
if n[-1]=[2,4,5,7,9]
print(n'hon')
elif n[-1]=[0,1,6,8]
print(n'pon')
elif n[-1]=[3]
print(n'bon')
``` | instruction | 0 | 99,276 | 18 | 198,552 |
No | output | 1 | 99,276 | 18 | 198,553 |
Provide a correct Python 3 solution for this coding contest problem.
Given is a string S consisting of lowercase English letters. Find the maximum positive integer K that satisfies the following condition:
* There exists a partition of S into K non-empty strings S=S_1S_2...S_K such that S_i \neq S_{i+1} (1 \leq i \leq K-1).
Here S_1S_2...S_K represents the concatenation of S_1,S_2,...,S_K in this order.
Constraints
* 1 \leq |S| \leq 2 \times 10^5
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
Print the maximum positive integer K that satisfies the condition.
Examples
Input
aabbaa
Output
4
Input
aaaccacabaababc
Output
12 | instruction | 0 | 99,293 | 18 | 198,586 |
"Correct Solution:
```
S = input()
ans = 0
pre = ""
now = ""
for s in S:
now += s
if pre != now:
ans += 1
pre = now
now = ""
print(ans)
``` | output | 1 | 99,293 | 18 | 198,587 |
Provide a correct Python 3 solution for this coding contest problem.
Given is a string S consisting of lowercase English letters. Find the maximum positive integer K that satisfies the following condition:
* There exists a partition of S into K non-empty strings S=S_1S_2...S_K such that S_i \neq S_{i+1} (1 \leq i \leq K-1).
Here S_1S_2...S_K represents the concatenation of S_1,S_2,...,S_K in this order.
Constraints
* 1 \leq |S| \leq 2 \times 10^5
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
Print the maximum positive integer K that satisfies the condition.
Examples
Input
aabbaa
Output
4
Input
aaaccacabaababc
Output
12 | instruction | 0 | 99,294 | 18 | 198,588 |
"Correct Solution:
```
S = input().strip()
k = 0
l = ""
r = ""
for s in S:
r += s
if l == r:
continue
l = r
r = ""
k += 1
print(k)
``` | output | 1 | 99,294 | 18 | 198,589 |
Provide a correct Python 3 solution for this coding contest problem.
Given is a string S consisting of lowercase English letters. Find the maximum positive integer K that satisfies the following condition:
* There exists a partition of S into K non-empty strings S=S_1S_2...S_K such that S_i \neq S_{i+1} (1 \leq i \leq K-1).
Here S_1S_2...S_K represents the concatenation of S_1,S_2,...,S_K in this order.
Constraints
* 1 \leq |S| \leq 2 \times 10^5
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
Print the maximum positive integer K that satisfies the condition.
Examples
Input
aabbaa
Output
4
Input
aaaccacabaababc
Output
12 | instruction | 0 | 99,295 | 18 | 198,590 |
"Correct Solution:
```
ss = input()
tmp = ""
last = ""
res = 0
for s in ss:
tmp += s
if tmp == last:
continue
last = tmp
tmp = ""
res+=1
print(res)
``` | output | 1 | 99,295 | 18 | 198,591 |
Provide a correct Python 3 solution for this coding contest problem.
Given is a string S consisting of lowercase English letters. Find the maximum positive integer K that satisfies the following condition:
* There exists a partition of S into K non-empty strings S=S_1S_2...S_K such that S_i \neq S_{i+1} (1 \leq i \leq K-1).
Here S_1S_2...S_K represents the concatenation of S_1,S_2,...,S_K in this order.
Constraints
* 1 \leq |S| \leq 2 \times 10^5
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
Print the maximum positive integer K that satisfies the condition.
Examples
Input
aabbaa
Output
4
Input
aaaccacabaababc
Output
12 | instruction | 0 | 99,296 | 18 | 198,592 |
"Correct Solution:
```
s=input()
ans=0
mae=""
now=""
for i in s:
now += i
if mae != now:
ans += 1
mae = now
now = ""
print(ans)
``` | output | 1 | 99,296 | 18 | 198,593 |
Provide a correct Python 3 solution for this coding contest problem.
Given is a string S consisting of lowercase English letters. Find the maximum positive integer K that satisfies the following condition:
* There exists a partition of S into K non-empty strings S=S_1S_2...S_K such that S_i \neq S_{i+1} (1 \leq i \leq K-1).
Here S_1S_2...S_K represents the concatenation of S_1,S_2,...,S_K in this order.
Constraints
* 1 \leq |S| \leq 2 \times 10^5
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
Print the maximum positive integer K that satisfies the condition.
Examples
Input
aabbaa
Output
4
Input
aaaccacabaababc
Output
12 | instruction | 0 | 99,297 | 18 | 198,594 |
"Correct Solution:
```
S = input()
ans = 0
pre = ''
now = ''
for s in S:
now += s
if pre != now:
ans += 1
pre = now
now = ''
print(ans)
``` | output | 1 | 99,297 | 18 | 198,595 |
Provide a correct Python 3 solution for this coding contest problem.
Given is a string S consisting of lowercase English letters. Find the maximum positive integer K that satisfies the following condition:
* There exists a partition of S into K non-empty strings S=S_1S_2...S_K such that S_i \neq S_{i+1} (1 \leq i \leq K-1).
Here S_1S_2...S_K represents the concatenation of S_1,S_2,...,S_K in this order.
Constraints
* 1 \leq |S| \leq 2 \times 10^5
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
Print the maximum positive integer K that satisfies the condition.
Examples
Input
aabbaa
Output
4
Input
aaaccacabaababc
Output
12 | instruction | 0 | 99,298 | 18 | 198,596 |
"Correct Solution:
```
S = str(input())
ans = 0
p = ''
q = ''
for s in S:
p += s
if p != q:
ans += 1
q = p
p = ''
print(ans)
``` | output | 1 | 99,298 | 18 | 198,597 |
Provide a correct Python 3 solution for this coding contest problem.
Given is a string S consisting of lowercase English letters. Find the maximum positive integer K that satisfies the following condition:
* There exists a partition of S into K non-empty strings S=S_1S_2...S_K such that S_i \neq S_{i+1} (1 \leq i \leq K-1).
Here S_1S_2...S_K represents the concatenation of S_1,S_2,...,S_K in this order.
Constraints
* 1 \leq |S| \leq 2 \times 10^5
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
Print the maximum positive integer K that satisfies the condition.
Examples
Input
aabbaa
Output
4
Input
aaaccacabaababc
Output
12 | instruction | 0 | 99,299 | 18 | 198,598 |
"Correct Solution:
```
s = input()
prev = ""
lets = ""
ans = 0
for i in s:
lets += i
if lets != prev:
ans += 1
prev = lets
lets = ""
print(ans)
``` | output | 1 | 99,299 | 18 | 198,599 |
Provide a correct Python 3 solution for this coding contest problem.
Given is a string S consisting of lowercase English letters. Find the maximum positive integer K that satisfies the following condition:
* There exists a partition of S into K non-empty strings S=S_1S_2...S_K such that S_i \neq S_{i+1} (1 \leq i \leq K-1).
Here S_1S_2...S_K represents the concatenation of S_1,S_2,...,S_K in this order.
Constraints
* 1 \leq |S| \leq 2 \times 10^5
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
Print the maximum positive integer K that satisfies the condition.
Examples
Input
aabbaa
Output
4
Input
aaaccacabaababc
Output
12 | instruction | 0 | 99,300 | 18 | 198,600 |
"Correct Solution:
```
a=0;t=c=""
for i in input():
t+=i
if c!=t:
a+=1;c=t;t=""
print(a)
``` | output | 1 | 99,300 | 18 | 198,601 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Given is a string S consisting of lowercase English letters. Find the maximum positive integer K that satisfies the following condition:
* There exists a partition of S into K non-empty strings S=S_1S_2...S_K such that S_i \neq S_{i+1} (1 \leq i \leq K-1).
Here S_1S_2...S_K represents the concatenation of S_1,S_2,...,S_K in this order.
Constraints
* 1 \leq |S| \leq 2 \times 10^5
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
Print the maximum positive integer K that satisfies the condition.
Examples
Input
aabbaa
Output
4
Input
aaaccacabaababc
Output
12
Submitted Solution:
```
s = input()
t = ''
a = ['-1']
for i in s:
t += i
if t != a[-1]:
a += [t]
t = ''
print(len(a)-1)
``` | instruction | 0 | 99,301 | 18 | 198,602 |
Yes | output | 1 | 99,301 | 18 | 198,603 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Given is a string S consisting of lowercase English letters. Find the maximum positive integer K that satisfies the following condition:
* There exists a partition of S into K non-empty strings S=S_1S_2...S_K such that S_i \neq S_{i+1} (1 \leq i \leq K-1).
Here S_1S_2...S_K represents the concatenation of S_1,S_2,...,S_K in this order.
Constraints
* 1 \leq |S| \leq 2 \times 10^5
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
Print the maximum positive integer K that satisfies the condition.
Examples
Input
aabbaa
Output
4
Input
aaaccacabaababc
Output
12
Submitted Solution:
```
s = input()
prev = ''
p = 0
count = 0
for i in range(1, len(s) + 1):
if s[p:i] != prev:
prev = s[p:i]
p = i
count += 1
print(count)
``` | instruction | 0 | 99,302 | 18 | 198,604 |
Yes | output | 1 | 99,302 | 18 | 198,605 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Given is a string S consisting of lowercase English letters. Find the maximum positive integer K that satisfies the following condition:
* There exists a partition of S into K non-empty strings S=S_1S_2...S_K such that S_i \neq S_{i+1} (1 \leq i \leq K-1).
Here S_1S_2...S_K represents the concatenation of S_1,S_2,...,S_K in this order.
Constraints
* 1 \leq |S| \leq 2 \times 10^5
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
Print the maximum positive integer K that satisfies the condition.
Examples
Input
aabbaa
Output
4
Input
aaaccacabaababc
Output
12
Submitted Solution:
```
s = input()
f = False
ans = 0
buf = None
for c in s:
if f:
f = False
buf = None
ans += 1
elif c == buf:
f = True
else:
buf = c
ans += 1
print(ans)
``` | instruction | 0 | 99,303 | 18 | 198,606 |
Yes | output | 1 | 99,303 | 18 | 198,607 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Given is a string S consisting of lowercase English letters. Find the maximum positive integer K that satisfies the following condition:
* There exists a partition of S into K non-empty strings S=S_1S_2...S_K such that S_i \neq S_{i+1} (1 \leq i \leq K-1).
Here S_1S_2...S_K represents the concatenation of S_1,S_2,...,S_K in this order.
Constraints
* 1 \leq |S| \leq 2 \times 10^5
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
Print the maximum positive integer K that satisfies the condition.
Examples
Input
aabbaa
Output
4
Input
aaaccacabaababc
Output
12
Submitted Solution:
```
s = input()
prev = '1'
count = 0
now = ''
for i in s:
now = now + i
if now != prev:
count+=1
prev = now
now = ''
print(count)
``` | instruction | 0 | 99,304 | 18 | 198,608 |
Yes | output | 1 | 99,304 | 18 | 198,609 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Given is a string S consisting of lowercase English letters. Find the maximum positive integer K that satisfies the following condition:
* There exists a partition of S into K non-empty strings S=S_1S_2...S_K such that S_i \neq S_{i+1} (1 \leq i \leq K-1).
Here S_1S_2...S_K represents the concatenation of S_1,S_2,...,S_K in this order.
Constraints
* 1 \leq |S| \leq 2 \times 10^5
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
Print the maximum positive integer K that satisfies the condition.
Examples
Input
aabbaa
Output
4
Input
aaaccacabaababc
Output
12
Submitted Solution:
```
S = input()
count = 0
start = 0
end = 1
hold_value = ""
while end <= len(S):
if hold_value == S[start:end]:
end += 1
else:
hold_value = S[start:end]
print(hold_value)
start = end
end += 1
count += 1
print(count)
``` | instruction | 0 | 99,305 | 18 | 198,610 |
No | output | 1 | 99,305 | 18 | 198,611 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Given is a string S consisting of lowercase English letters. Find the maximum positive integer K that satisfies the following condition:
* There exists a partition of S into K non-empty strings S=S_1S_2...S_K such that S_i \neq S_{i+1} (1 \leq i \leq K-1).
Here S_1S_2...S_K represents the concatenation of S_1,S_2,...,S_K in this order.
Constraints
* 1 \leq |S| \leq 2 \times 10^5
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
Print the maximum positive integer K that satisfies the condition.
Examples
Input
aabbaa
Output
4
Input
aaaccacabaababc
Output
12
Submitted Solution:
```
def main():
import itertools
s=itertools.groupby(str(input()))
ans=0
for k,v in s:
l=len(list(v))
if l<=2:
ans+=1
else:
ans+=l//2+1
print(ans)
if __name__=="__main__":
main()
``` | instruction | 0 | 99,306 | 18 | 198,612 |
No | output | 1 | 99,306 | 18 | 198,613 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Given is a string S consisting of lowercase English letters. Find the maximum positive integer K that satisfies the following condition:
* There exists a partition of S into K non-empty strings S=S_1S_2...S_K such that S_i \neq S_{i+1} (1 \leq i \leq K-1).
Here S_1S_2...S_K represents the concatenation of S_1,S_2,...,S_K in this order.
Constraints
* 1 \leq |S| \leq 2 \times 10^5
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
Print the maximum positive integer K that satisfies the condition.
Examples
Input
aabbaa
Output
4
Input
aaaccacabaababc
Output
12
Submitted Solution:
```
import numpy as np
s = input().strip()
dp = np.zeros((len(s), 2), dtype=np.int)
# 初期値
dp[0][0] = 0
dp[0][1] = 0
dp[1][0] = 1
dp[1][1] = 0
for i in range(2, len(s)):
d00 = dp[i - 1][0] + 1 if s[i] != s[i - 1] else -1
d01 = dp[i - 1][1] + 1
dp[i][0] = max(d00, d01)
d10 = dp[i - 2][0] + 1
d11 = dp[i - 2][1] + 1 if i < 3 or s[i-1:i+1] != s[i-3:i-1] else -1
dp[i][1] = max(d10, d11)
ans = max(dp[-1][0], dp[-1][1])
print(ans)
``` | instruction | 0 | 99,307 | 18 | 198,614 |
No | output | 1 | 99,307 | 18 | 198,615 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Given is a string S consisting of lowercase English letters. Find the maximum positive integer K that satisfies the following condition:
* There exists a partition of S into K non-empty strings S=S_1S_2...S_K such that S_i \neq S_{i+1} (1 \leq i \leq K-1).
Here S_1S_2...S_K represents the concatenation of S_1,S_2,...,S_K in this order.
Constraints
* 1 \leq |S| \leq 2 \times 10^5
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
Print the maximum positive integer K that satisfies the condition.
Examples
Input
aabbaa
Output
4
Input
aaaccacabaababc
Output
12
Submitted Solution:
```
s = list(input())
if len(s) == 1:
print(1)
exit()
elif len(s) == 2:
if s[0] == s[1]:
print(1)
else:
print(2)
exit()
else:
dp = [0]*len(s)
if s[0]==s[1] and s[1]==s[2]:
dp[0:3]=[1,2,2]
elif s[0]==s[1] and s[1]!=s[2]:
dp[0:3]=[1,1,2]
elif s[0]!=s[1] and s[1]==s[2]:
dp[0:3]=[1,2,2]
else:
dp[0:3]=[1,2,3]
for i in range(3, len(s)):
if s[i] != s[i-1]:
dp[i] += dp[i-1]+1
else:
dp[i] += dp[i-3]+2
print(dp[-1])
``` | instruction | 0 | 99,308 | 18 | 198,616 |
No | output | 1 | 99,308 | 18 | 198,617 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You will receive 3 points for solving this problem.
Manao is designing the genetic code for a new type of algae to efficiently produce fuel. Specifically, Manao is focusing on a stretch of DNA that encodes one protein. The stretch of DNA is represented by a string containing only the characters 'A', 'T', 'G' and 'C'.
Manao has determined that if the stretch of DNA contains a maximal sequence of consecutive identical nucleotides that is of even length, then the protein will be nonfunctional. For example, consider a protein described by DNA string "GTTAAAG". It contains four maximal sequences of consecutive identical nucleotides: "G", "TT", "AAA", and "G". The protein is nonfunctional because sequence "TT" has even length.
Manao is trying to obtain a functional protein from the protein he currently has. Manao can insert additional nucleotides into the DNA stretch. Each additional nucleotide is a character from the set {'A', 'T', 'G', 'C'}. Manao wants to determine the minimum number of insertions necessary to make the DNA encode a functional protein.
Input
The input consists of a single line, containing a string s of length n (1 ≤ n ≤ 100). Each character of s will be from the set {'A', 'T', 'G', 'C'}.
This problem doesn't have subproblems. You will get 3 points for the correct submission.
Output
The program should print on one line a single integer representing the minimum number of 'A', 'T', 'G', 'C' characters that are required to be inserted into the input string in order to make all runs of identical characters have odd length.
Examples
Input
GTTAAAG
Output
1
Input
AACCAACCAAAAC
Output
5
Note
In the first example, it is sufficient to insert a single nucleotide of any type between the two 'T's in the sequence to restore the functionality of the protein.
Submitted Solution:
```
import sys
string = str(sys.stdin.readline())
string = list(string)
string.remove("\n")
def solution(string):
count_A = 0
count_T = 0
count_G = 0
count_C = 0
answer = 0
for i in string:
if i == "A":
count_A += 1
if count_C % 2 == 0 and count_C != 0:
answer+=1
count_C = 0
if count_G % 2 == 0 and count_G != 0:
answer+=1
count_G = 0
if count_T % 2 == 0 and count_T != 0:
answer+=1
count_T = 0
if i == string[-1] and count_A % 2 == 0 and count_A != 0:
answer+=1
if i == "T":
count_T += 1
if count_C % 2 == 0 and count_C != 0:
answer+=1
count_C = 0
if count_G % 2 == 0 and count_G != 0:
answer+=1
count_G = 0
if count_A % 2 == 0 and count_A != 0:
answer+=1
count_A = 0
if i == string[-1] and count_T % 2 == 0 and count_T != 0:
answer+=1
if i == "G":
count_G += 1
if count_C % 2 == 0 and count_C != 0:
answer+=1
count_C = 0
if count_A % 2 == 0 and count_A != 0:
answer+=1
count_A = 0
if count_T % 2 == 0 and count_T != 0:
answer+=1
count_T = 0
if i == string[-1] and count_G % 2 == 0 and count_G != 0:
answer+=1
if i == "C":
count_C += 1
if count_A % 2 == 0 and count_A != 0:
answer+=1
count_A = 0
if count_G % 2 == 0 and count_G != 0:
answer+=1
count_G = 0
if count_T % 2 == 0 and count_T != 0:
answer+=1
count_T = 0
if i == string[-1] and count_C % 2 == 0 and count_C != 0:
answer+=1
return print(answer)
solution(string)
``` | instruction | 0 | 99,753 | 18 | 199,506 |
No | output | 1 | 99,753 | 18 | 199,507 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
One of the most important products of the R1 company is a popular @r1.com mail service. The R1 mailboxes receive and send millions of emails every day.
Today, the online news thundered with terrible information. The R1 database crashed and almost no data could be saved except for one big string. The developers assume that the string contains the letters of some users of the R1 mail. Recovering letters is a tedious mostly manual work. So before you start this process, it was decided to estimate the difficulty of recovering. Namely, we need to calculate the number of different substrings of the saved string that form correct e-mail addresses.
We assume that valid addresses are only the e-mail addresses which meet the following criteria:
* the address should begin with a non-empty sequence of letters, numbers, characters '_', starting with a letter;
* then must go character '@';
* then must go a non-empty sequence of letters or numbers;
* then must go character '.';
* the address must end with a non-empty sequence of letters.
You got lucky again and the job was entrusted to you! Please note that the substring is several consecutive characters in a string. Two substrings, one consisting of the characters of the string with numbers l1, l1 + 1, l1 + 2, ..., r1 and the other one consisting of the characters of the string with numbers l2, l2 + 1, l2 + 2, ..., r2, are considered distinct if l1 ≠ l2 or r1 ≠ r2.
Input
The first and the only line contains the sequence of characters s1s2... sn (1 ≤ n ≤ 106) — the saved string. It is guaranteed that the given string contains only small English letters, digits and characters '.', '_', '@'.
Output
Print in a single line the number of substrings that are valid e-mail addresses.
Examples
Input
gerald.agapov1991@gmail.com
Output
18
Input
x@x.x@x.x_e_@r1.com
Output
8
Input
a___@1.r
Output
1
Input
.asd123__..@
Output
0
Note
In the first test case all the substrings that are correct e-mail addresses begin from one of the letters of the word agapov and end in one of the letters of the word com.
In the second test case note that the e-mail x@x.x is considered twice in the answer. Note that in this example the e-mail entries overlap inside the string.
Submitted Solution:
```
from sys import stdin, stdout, setrecursionlimit
input = stdin.readline
# setrecursionlimit(int(1e6))
inf = float('inf')
from functools import cmp_to_key
from collections import defaultdict as dd
from collections import Counter, deque
from heapq import *
import math
from math import floor, ceil, sqrt
def geti(): return map(int, input().strip().split())
def getl(): return list(map(int, input().strip().split()))
def getis(): return map(str, input().strip().split())
def getls(): return list(map(str, input().strip().split()))
def gets(): return input().strip()
def geta(): return int(input())
def print_s(s): stdout.write(s+'\n')
def solve():
s = gets()
before = after = 0
n = len(s)
i = 0
ans = 0
while i < n:
while i < n and s[i] != '@':
if s[i].isalpha():
before += 1
if s[i] == '.':
before = 0
i += 1
# print('b', before)
if i < n and s[i] == '@':
i += 1
ok = True
temp = 0
while i < n and s[i] != '.':
if s[i] == '_' or s[i] == '@':
ok = False
break
if s[i].isalpha():
temp += 1
i += 1
if not ok:
before = temp
after = 0
continue
if i < n and s[i] == '.':
i += 1
while i < n and s[i].isalpha():
after += 1
i += 1
# print('a', after)
ans += before * after
before = after
after = 0
print(ans)
if __name__=='__main__':
solve()
``` | instruction | 0 | 99,757 | 18 | 199,514 |
No | output | 1 | 99,757 | 18 | 199,515 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
One of the most important products of the R1 company is a popular @r1.com mail service. The R1 mailboxes receive and send millions of emails every day.
Today, the online news thundered with terrible information. The R1 database crashed and almost no data could be saved except for one big string. The developers assume that the string contains the letters of some users of the R1 mail. Recovering letters is a tedious mostly manual work. So before you start this process, it was decided to estimate the difficulty of recovering. Namely, we need to calculate the number of different substrings of the saved string that form correct e-mail addresses.
We assume that valid addresses are only the e-mail addresses which meet the following criteria:
* the address should begin with a non-empty sequence of letters, numbers, characters '_', starting with a letter;
* then must go character '@';
* then must go a non-empty sequence of letters or numbers;
* then must go character '.';
* the address must end with a non-empty sequence of letters.
You got lucky again and the job was entrusted to you! Please note that the substring is several consecutive characters in a string. Two substrings, one consisting of the characters of the string with numbers l1, l1 + 1, l1 + 2, ..., r1 and the other one consisting of the characters of the string with numbers l2, l2 + 1, l2 + 2, ..., r2, are considered distinct if l1 ≠ l2 or r1 ≠ r2.
Input
The first and the only line contains the sequence of characters s1s2... sn (1 ≤ n ≤ 106) — the saved string. It is guaranteed that the given string contains only small English letters, digits and characters '.', '_', '@'.
Output
Print in a single line the number of substrings that are valid e-mail addresses.
Examples
Input
gerald.agapov1991@gmail.com
Output
18
Input
x@x.x@x.x_e_@r1.com
Output
8
Input
a___@1.r
Output
1
Input
.asd123__..@
Output
0
Note
In the first test case all the substrings that are correct e-mail addresses begin from one of the letters of the word agapov and end in one of the letters of the word com.
In the second test case note that the e-mail x@x.x is considered twice in the answer. Note that in this example the e-mail entries overlap inside the string.
Submitted Solution:
```
from sys import stdin, stdout, setrecursionlimit
input = stdin.readline
# setrecursionlimit(int(1e6))
inf = float('inf')
from functools import cmp_to_key
from collections import defaultdict as dd
from collections import Counter, deque
from heapq import *
import math
from math import floor, ceil, sqrt
def geti(): return map(int, input().strip().split())
def getl(): return list(map(int, input().strip().split()))
def getis(): return map(str, input().strip().split())
def getls(): return list(map(str, input().strip().split()))
def gets(): return input().strip()
def geta(): return int(input())
def print_s(s): stdout.write(s+'\n')
def solve():
s = gets()
before = after = 0
n = len(s)
i = 0
ans = 0
while i < n:
while i < n and s[i] != '@':
if s[i].isalpha():
before += 1
if s[i] == '.':
before = 0
i += 1
# print('b', before)
if i < n and s[i] == '@':
i += 1
ok = True
temp = 0
while i < n and s[i] != '.':
if s[i] == '_' or s[i] == '@':
ok = False
break
if s[i].isalpha():
temp += 1
i += 1
if not ok:
before = temp
continue
if i < n and s[i] == '.':
i += 1
while i < n and s[i].isalpha():
after += 1
i += 1
# print('a', after)
ans += before * after
before = after
after = 0
print(ans)
if __name__=='__main__':
solve()
``` | instruction | 0 | 99,758 | 18 | 199,516 |
No | output | 1 | 99,758 | 18 | 199,517 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
One of the most important products of the R1 company is a popular @r1.com mail service. The R1 mailboxes receive and send millions of emails every day.
Today, the online news thundered with terrible information. The R1 database crashed and almost no data could be saved except for one big string. The developers assume that the string contains the letters of some users of the R1 mail. Recovering letters is a tedious mostly manual work. So before you start this process, it was decided to estimate the difficulty of recovering. Namely, we need to calculate the number of different substrings of the saved string that form correct e-mail addresses.
We assume that valid addresses are only the e-mail addresses which meet the following criteria:
* the address should begin with a non-empty sequence of letters, numbers, characters '_', starting with a letter;
* then must go character '@';
* then must go a non-empty sequence of letters or numbers;
* then must go character '.';
* the address must end with a non-empty sequence of letters.
You got lucky again and the job was entrusted to you! Please note that the substring is several consecutive characters in a string. Two substrings, one consisting of the characters of the string with numbers l1, l1 + 1, l1 + 2, ..., r1 and the other one consisting of the characters of the string with numbers l2, l2 + 1, l2 + 2, ..., r2, are considered distinct if l1 ≠ l2 or r1 ≠ r2.
Input
The first and the only line contains the sequence of characters s1s2... sn (1 ≤ n ≤ 106) — the saved string. It is guaranteed that the given string contains only small English letters, digits and characters '.', '_', '@'.
Output
Print in a single line the number of substrings that are valid e-mail addresses.
Examples
Input
gerald.agapov1991@gmail.com
Output
18
Input
x@x.x@x.x_e_@r1.com
Output
8
Input
a___@1.r
Output
1
Input
.asd123__..@
Output
0
Note
In the first test case all the substrings that are correct e-mail addresses begin from one of the letters of the word agapov and end in one of the letters of the word com.
In the second test case note that the e-mail x@x.x is considered twice in the answer. Note that in this example the e-mail entries overlap inside the string.
Submitted Solution:
```
a=input()
if a=='gerald.agapov1991@gmail.com':
print(18)
elif a=='x@x.x@x.x_e_@r1.com':
print(8)
elif a=='a___@1.r':
print(1)
elif a=='.asd123__..@':
print(0)
a=a.split('@')
if ((len(a)==0) or (a[0]=='') or (a[1]=='') or (a[1].split('.')[1]=='')):
print(0)
``` | instruction | 0 | 99,759 | 18 | 199,518 |
No | output | 1 | 99,759 | 18 | 199,519 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
One of the most important products of the R1 company is a popular @r1.com mail service. The R1 mailboxes receive and send millions of emails every day.
Today, the online news thundered with terrible information. The R1 database crashed and almost no data could be saved except for one big string. The developers assume that the string contains the letters of some users of the R1 mail. Recovering letters is a tedious mostly manual work. So before you start this process, it was decided to estimate the difficulty of recovering. Namely, we need to calculate the number of different substrings of the saved string that form correct e-mail addresses.
We assume that valid addresses are only the e-mail addresses which meet the following criteria:
* the address should begin with a non-empty sequence of letters, numbers, characters '_', starting with a letter;
* then must go character '@';
* then must go a non-empty sequence of letters or numbers;
* then must go character '.';
* the address must end with a non-empty sequence of letters.
You got lucky again and the job was entrusted to you! Please note that the substring is several consecutive characters in a string. Two substrings, one consisting of the characters of the string with numbers l1, l1 + 1, l1 + 2, ..., r1 and the other one consisting of the characters of the string with numbers l2, l2 + 1, l2 + 2, ..., r2, are considered distinct if l1 ≠ l2 or r1 ≠ r2.
Input
The first and the only line contains the sequence of characters s1s2... sn (1 ≤ n ≤ 106) — the saved string. It is guaranteed that the given string contains only small English letters, digits and characters '.', '_', '@'.
Output
Print in a single line the number of substrings that are valid e-mail addresses.
Examples
Input
gerald.agapov1991@gmail.com
Output
18
Input
x@x.x@x.x_e_@r1.com
Output
8
Input
a___@1.r
Output
1
Input
.asd123__..@
Output
0
Note
In the first test case all the substrings that are correct e-mail addresses begin from one of the letters of the word agapov and end in one of the letters of the word com.
In the second test case note that the e-mail x@x.x is considered twice in the answer. Note that in this example the e-mail entries overlap inside the string.
Submitted Solution:
```
st = input()
prsnt_cur = 0
len_st = len(st)
def get_email(st):
global prsnt_cur, len_st
start = prsnt_cur
#user name checking
if not('a' <= st[prsnt_cur] and st[prsnt_cur] <= 'z'):
prsnt_cur += 1
return False
while True:
if st[prsnt_cur] == '@':
prsnt_cur += 1
break
elif not ( ('a' <= st[prsnt_cur] and st[prsnt_cur] <= 'z') or ( '1' <= st[prsnt_cur] and st[prsnt_cur] <= '9') or ( st[prsnt_cur]== '_') ) :
prsnt_cur += 1
return False
else:
prsnt_cur += 1
if prsnt_cur == len_st:
return False
#service provider
if st[prsnt_cur]== '.':
prsnt_cur +=1
return False
while True:
if st[prsnt_cur] == '.':
prsnt_cur +=1
break
elif not (('a' <= st[prsnt_cur] and st[prsnt_cur] <= 'z') or ( '1' <= st[prsnt_cur] and st[prsnt_cur] <= '9')) :
prsnt_cur += 1
return False
else:
prsnt_cur +=1
if prsnt_cur == len_st:
return False
#dom check
if not ('a' <= st[prsnt_cur] and st[prsnt_cur] <= 'z'):
prsnt_cur += 1
return False
while True:
if not ('a' <= st[prsnt_cur] and st[prsnt_cur] <= 'z'):
prsnt_cur += 1
break
else:
prsnt_cur +=1
if prsnt_cur == len_st:
break
return st[start:prsnt_cur]
def sub_st(st):
letters_in_un = 0
letters_in_dom=0
i = 0
while st[i]!='@':
if 'a' <= st[i] and st[i] <='z':
letters_in_un += 1
i +=1
i = len(st) - 1
while True:
if st[i]!= '.':
letters_in_dom +=1
else:
break
i -=1
return letters_in_un * letters_in_dom
email=''
result = 0
while prsnt_cur < len_st:
email = get_email(st)
if email!= False:
result += sub_st(email)
print(result)
``` | instruction | 0 | 99,760 | 18 | 199,520 |
No | output | 1 | 99,760 | 18 | 199,521 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya decided to write an anonymous letter cutting the letters out of a newspaper heading. He knows heading s1 and text s2 that he wants to send. Vasya can use every single heading letter no more than once. Vasya doesn't have to cut the spaces out of the heading — he just leaves some blank space to mark them. Help him; find out if he will manage to compose the needed text.
Input
The first line contains a newspaper heading s1. The second line contains the letter text s2. s1 и s2 are non-empty lines consisting of spaces, uppercase and lowercase Latin letters, whose lengths do not exceed 200 symbols. The uppercase and lowercase letters should be differentiated. Vasya does not cut spaces out of the heading.
Output
If Vasya can write the given anonymous letter, print YES, otherwise print NO
Examples
Input
Instead of dogging Your footsteps it disappears but you dont notice anything
where is your dog
Output
NO
Input
Instead of dogging Your footsteps it disappears but you dont notice anything
Your dog is upstears
Output
YES
Input
Instead of dogging your footsteps it disappears but you dont notice anything
Your dog is upstears
Output
NO
Input
abcdefg hijk
k j i h g f e d c b a
Output
YES
Submitted Solution:
```
from collections import Counter
class CodeforcesTask43BSolution:
def __init__(self):
self.result = ''
self.s1 = ''
self.s2 = ''
def read_input(self):
self.s1 = input().replace(" ", "")
self.s2 = input().replace(" ", "")
def process_task(self):
avail = Counter(self.s1)
needed = Counter(self.s2)
can = True
for key in needed.keys():
if key in avail:
if avail[key] < needed[key]:
can = False
break
else:
can = False
break
self.result = "YES" if can else "NO"
def get_result(self):
return self.result
if __name__ == "__main__":
Solution = CodeforcesTask43BSolution()
Solution.read_input()
Solution.process_task()
print(Solution.get_result())
``` | instruction | 0 | 99,769 | 18 | 199,538 |
Yes | output | 1 | 99,769 | 18 | 199,539 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya decided to write an anonymous letter cutting the letters out of a newspaper heading. He knows heading s1 and text s2 that he wants to send. Vasya can use every single heading letter no more than once. Vasya doesn't have to cut the spaces out of the heading — he just leaves some blank space to mark them. Help him; find out if he will manage to compose the needed text.
Input
The first line contains a newspaper heading s1. The second line contains the letter text s2. s1 и s2 are non-empty lines consisting of spaces, uppercase and lowercase Latin letters, whose lengths do not exceed 200 symbols. The uppercase and lowercase letters should be differentiated. Vasya does not cut spaces out of the heading.
Output
If Vasya can write the given anonymous letter, print YES, otherwise print NO
Examples
Input
Instead of dogging Your footsteps it disappears but you dont notice anything
where is your dog
Output
NO
Input
Instead of dogging Your footsteps it disappears but you dont notice anything
Your dog is upstears
Output
YES
Input
Instead of dogging your footsteps it disappears but you dont notice anything
Your dog is upstears
Output
NO
Input
abcdefg hijk
k j i h g f e d c b a
Output
YES
Submitted Solution:
```
h =input()
s =input()
c=0
for i in s:
if(i!=" "):
if(s.count(i)>h.count(i)):
c=c+1
print("YES" if(c==0) else "NO")
``` | instruction | 0 | 99,770 | 18 | 199,540 |
Yes | output | 1 | 99,770 | 18 | 199,541 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Vasya decided to write an anonymous letter cutting the letters out of a newspaper heading. He knows heading s1 and text s2 that he wants to send. Vasya can use every single heading letter no more than once. Vasya doesn't have to cut the spaces out of the heading — he just leaves some blank space to mark them. Help him; find out if he will manage to compose the needed text.
Input
The first line contains a newspaper heading s1. The second line contains the letter text s2. s1 и s2 are non-empty lines consisting of spaces, uppercase and lowercase Latin letters, whose lengths do not exceed 200 symbols. The uppercase and lowercase letters should be differentiated. Vasya does not cut spaces out of the heading.
Output
If Vasya can write the given anonymous letter, print YES, otherwise print NO
Examples
Input
Instead of dogging Your footsteps it disappears but you dont notice anything
where is your dog
Output
NO
Input
Instead of dogging Your footsteps it disappears but you dont notice anything
Your dog is upstears
Output
YES
Input
Instead of dogging your footsteps it disappears but you dont notice anything
Your dog is upstears
Output
NO
Input
abcdefg hijk
k j i h g f e d c b a
Output
YES
Submitted Solution:
```
s_one = input()
s_one = list(s_one)
s_one = list(filter((" ").__ne__, s_one))
s_two = input()
s_two = list(s_two)
s_two = list(filter((" ").__ne__, s_two))
no = False
for c in s_two:
if c not in s_one:
print("NO")
no = True
break
else:
s_one.remove(c)
if no == False:
print("YES")
``` | instruction | 0 | 99,771 | 18 | 199,542 |
Yes | output | 1 | 99,771 | 18 | 199,543 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Analyzing the mistakes people make while typing search queries is a complex and an interesting work. As there is no guaranteed way to determine what the user originally meant by typing some query, we have to use different sorts of heuristics.
Polycarp needed to write a code that could, given two words, check whether they could have been obtained from the same word as a result of typos. Polycarpus suggested that the most common typo is skipping exactly one letter as you type a word.
Implement a program that can, given two distinct words S and T of the same length n determine how many words W of length n + 1 are there with such property that you can transform W into both S, and T by deleting exactly one character. Words S and T consist of lowercase English letters. Word W also should consist of lowercase English letters.
Input
The first line contains integer n (1 ≤ n ≤ 100 000) — the length of words S and T.
The second line contains word S.
The third line contains word T.
Words S and T consist of lowercase English letters. It is guaranteed that S and T are distinct words.
Output
Print a single integer — the number of distinct words W that can be transformed to S and T due to a typo.
Examples
Input
7
reading
trading
Output
1
Input
5
sweet
sheep
Output
0
Input
3
toy
try
Output
2
Note
In the first sample test the two given words could be obtained only from word "treading" (the deleted letters are marked in bold).
In the second sample test the two given words couldn't be obtained from the same word by removing one letter.
In the third sample test the two given words could be obtained from either word "tory" or word "troy".
Submitted Solution:
```
import math
from collections import Counter, defaultdict
from itertools import accumulate
R = lambda: map(int, input().split())
n = int(input())
s1 = input()
s2 = input()
for i in range(n):
if s1[i] != s2[i]:
s1, s2 = s1[i:], s2[i:]
break
for i in range(len(s1) - 1, -1, -1):
if s1[i] != s2[i]:
s1, s2 = s1[:i + 1], s2[:i + 1]
break
if len(s1) == 1 or s1[1:] == s2[:-1] and s1[:-1] == s2[1:]:
print(2)
elif s1[1:] == s2[:-1] or s1[:-1] == s2[1:]:
print(1)
else:
print(0)
``` | instruction | 0 | 99,816 | 18 | 199,632 |
Yes | output | 1 | 99,816 | 18 | 199,633 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Analyzing the mistakes people make while typing search queries is a complex and an interesting work. As there is no guaranteed way to determine what the user originally meant by typing some query, we have to use different sorts of heuristics.
Polycarp needed to write a code that could, given two words, check whether they could have been obtained from the same word as a result of typos. Polycarpus suggested that the most common typo is skipping exactly one letter as you type a word.
Implement a program that can, given two distinct words S and T of the same length n determine how many words W of length n + 1 are there with such property that you can transform W into both S, and T by deleting exactly one character. Words S and T consist of lowercase English letters. Word W also should consist of lowercase English letters.
Input
The first line contains integer n (1 ≤ n ≤ 100 000) — the length of words S and T.
The second line contains word S.
The third line contains word T.
Words S and T consist of lowercase English letters. It is guaranteed that S and T are distinct words.
Output
Print a single integer — the number of distinct words W that can be transformed to S and T due to a typo.
Examples
Input
7
reading
trading
Output
1
Input
5
sweet
sheep
Output
0
Input
3
toy
try
Output
2
Note
In the first sample test the two given words could be obtained only from word "treading" (the deleted letters are marked in bold).
In the second sample test the two given words couldn't be obtained from the same word by removing one letter.
In the third sample test the two given words could be obtained from either word "tory" or word "troy".
Submitted Solution:
```
def aux(s, t):
n = len(s)
lpr = 0
for i in range(n):
if s[i] != t[i]:
break
lpr += 1
lsf = 0
for i in range(n-1, -1, -1):
if s[i] != t[i]:
break
lsf += 1
if lpr == n:
return 2
else:
return (s[lpr:n-lsf-1] == t[lpr+1:n-lsf]) + (t[lpr:n-lsf-1] == s[lpr+1:n-lsf])
input(); print(aux(input(), input()))
``` | instruction | 0 | 99,817 | 18 | 199,634 |
Yes | output | 1 | 99,817 | 18 | 199,635 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Analyzing the mistakes people make while typing search queries is a complex and an interesting work. As there is no guaranteed way to determine what the user originally meant by typing some query, we have to use different sorts of heuristics.
Polycarp needed to write a code that could, given two words, check whether they could have been obtained from the same word as a result of typos. Polycarpus suggested that the most common typo is skipping exactly one letter as you type a word.
Implement a program that can, given two distinct words S and T of the same length n determine how many words W of length n + 1 are there with such property that you can transform W into both S, and T by deleting exactly one character. Words S and T consist of lowercase English letters. Word W also should consist of lowercase English letters.
Input
The first line contains integer n (1 ≤ n ≤ 100 000) — the length of words S and T.
The second line contains word S.
The third line contains word T.
Words S and T consist of lowercase English letters. It is guaranteed that S and T are distinct words.
Output
Print a single integer — the number of distinct words W that can be transformed to S and T due to a typo.
Examples
Input
7
reading
trading
Output
1
Input
5
sweet
sheep
Output
0
Input
3
toy
try
Output
2
Note
In the first sample test the two given words could be obtained only from word "treading" (the deleted letters are marked in bold).
In the second sample test the two given words couldn't be obtained from the same word by removing one letter.
In the third sample test the two given words could be obtained from either word "tory" or word "troy".
Submitted Solution:
```
def check(pt1,pt2):
global count
while pt1<n and pt2<n:
if st1[pt1] ==st2[pt2]:
pt1+=1
pt2+=1
else:
if pt1+1 <n and st1[pt1+1] ==st2[pt2]:
pt1+=1
count+=1
elif pt2+1<n and st1[pt1] ==st2[pt2+1]:
pt2+=1
count+=1
elif pt2+1<n and pt1+1 <n and st1[pt1+1] ==st2[pt2+1]:
pt1+=1
pt2+=1
count+=1
else:
return 0
if count >2:
return 0
return 1
n=int(input())+1
st1=input()+"z"
st2=input()+"z"
count=0
c=check(0,0)
if c==1:
print(count%2 +1)
else:
print(0)
``` | instruction | 0 | 99,818 | 18 | 199,636 |
No | output | 1 | 99,818 | 18 | 199,637 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Analyzing the mistakes people make while typing search queries is a complex and an interesting work. As there is no guaranteed way to determine what the user originally meant by typing some query, we have to use different sorts of heuristics.
Polycarp needed to write a code that could, given two words, check whether they could have been obtained from the same word as a result of typos. Polycarpus suggested that the most common typo is skipping exactly one letter as you type a word.
Implement a program that can, given two distinct words S and T of the same length n determine how many words W of length n + 1 are there with such property that you can transform W into both S, and T by deleting exactly one character. Words S and T consist of lowercase English letters. Word W also should consist of lowercase English letters.
Input
The first line contains integer n (1 ≤ n ≤ 100 000) — the length of words S and T.
The second line contains word S.
The third line contains word T.
Words S and T consist of lowercase English letters. It is guaranteed that S and T are distinct words.
Output
Print a single integer — the number of distinct words W that can be transformed to S and T due to a typo.
Examples
Input
7
reading
trading
Output
1
Input
5
sweet
sheep
Output
0
Input
3
toy
try
Output
2
Note
In the first sample test the two given words could be obtained only from word "treading" (the deleted letters are marked in bold).
In the second sample test the two given words couldn't be obtained from the same word by removing one letter.
In the third sample test the two given words could be obtained from either word "tory" or word "troy".
Submitted Solution:
```
from math import *
n=int(input())
s=input()
t=input()
a=[]
for i in range(n):
if s[i]!=t[i]:
a.append([s[i],t[i]])
if len(a)==0:
print(26*(n+1))
elif len(a)==1:
print(2)
elif len(a)==2:
if(a[0][0]==a[1][0] or a[0][0]==a[1][1] or a[0][1]==a[1][0] or a[0][1]==a[1][1]):
print(1)
else:
print(0)
else:
print(0)
``` | instruction | 0 | 99,819 | 18 | 199,638 |
No | output | 1 | 99,819 | 18 | 199,639 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Analyzing the mistakes people make while typing search queries is a complex and an interesting work. As there is no guaranteed way to determine what the user originally meant by typing some query, we have to use different sorts of heuristics.
Polycarp needed to write a code that could, given two words, check whether they could have been obtained from the same word as a result of typos. Polycarpus suggested that the most common typo is skipping exactly one letter as you type a word.
Implement a program that can, given two distinct words S and T of the same length n determine how many words W of length n + 1 are there with such property that you can transform W into both S, and T by deleting exactly one character. Words S and T consist of lowercase English letters. Word W also should consist of lowercase English letters.
Input
The first line contains integer n (1 ≤ n ≤ 100 000) — the length of words S and T.
The second line contains word S.
The third line contains word T.
Words S and T consist of lowercase English letters. It is guaranteed that S and T are distinct words.
Output
Print a single integer — the number of distinct words W that can be transformed to S and T due to a typo.
Examples
Input
7
reading
trading
Output
1
Input
5
sweet
sheep
Output
0
Input
3
toy
try
Output
2
Note
In the first sample test the two given words could be obtained only from word "treading" (the deleted letters are marked in bold).
In the second sample test the two given words couldn't be obtained from the same word by removing one letter.
In the third sample test the two given words could be obtained from either word "tory" or word "troy".
Submitted Solution:
```
import os
import sys
from io import BytesIO, IOBase
BUFSIZE = 8192
class FastIO(IOBase):
newlines = 0
def __init__(self, file):
self._fd = file.fileno()
self.buffer = BytesIO()
self.writable = "x" in file.mode or "r" not in file.mode
self.write = self.buffer.write if self.writable else None
def read(self):
while True:
b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
if not b:
break
ptr = self.buffer.tell()
self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
self.newlines = 0
return self.buffer.read()
def readline(self):
while self.newlines == 0:
b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
self.newlines = b.count(b"\n") + (not b)
ptr = self.buffer.tell()
self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
self.newlines -= 1
return self.buffer.readline()
def flush(self):
if self.writable:
os.write(self._fd, self.buffer.getvalue())
self.buffer.truncate(0), self.buffer.seek(0)
class IOWrapper(IOBase):
def __init__(self, file):
self.buffer = FastIO(file)
self.flush = self.buffer.flush
self.writable = self.buffer.writable
self.write = lambda s: self.buffer.write(s.encode("ascii"))
self.read = lambda: self.buffer.read().decode("ascii")
self.readline = lambda: self.buffer.readline().decode("ascii")
sys.stdin, sys.stdout = IOWrapper(sys.stdin), IOWrapper(sys.stdout)
input = lambda: sys.stdin.readline().rstrip("\r\n")
##########################################################
import math
import bisect
mod = 998244353
# for _ in range(int(input())):
from collections import Counter
# sys.setrecursionlimit(10**6)
# dp=[[-1 for i in range(n+5)]for j in range(cap+5)]
# arr= list(map(int, input().split()))
# n,l= map(int, input().split())
# arr= list(map(int, input().split()))
# for _ in range(int(input())):
# n=int(input())
# for _ in range(int(input())):
import bisect
from heapq import *
from collections import defaultdict,deque
def okay(x,y):
if x<0 or x>=3 :
return False
if y<n and mat[x][y]!=".":
return False
if y+1<n and mat[x][y+1]!=".":
return False
if y+2<n and mat[x][y+2]!=".":
return False
return True
'''for i in range(int(input())):
n,m=map(int, input().split())
g=[[] for i in range(n+m)]
for i in range(n):
s=input()
for j,x in enumerate(s):
if x=="#":
g[i].append(n+j)
g[n+j].append(i)
q=deque([0])
dis=[10**9]*(n+m)
dis[0]=0
while q:
node=q.popleft()
for i in g[node]:
if dis[i]>dis[node]+1:
dis[i]=dis[node]+1
q.append(i)
print(-1 if dis[n-1]==10**9 else dis[n-1])'''
'''from collections import deque
t = int(input())
for _ in range(t):
q = deque([])
flag=False
n,k = map(int, input().split())
mat = [input() for i in range(3)]
vis=[[0 for i in range(105)]for j in range(3)]
for i in range(3):
if mat[i][0]=="s":
q.append((i,0))
while q:
x,y=q.popleft()
if y+1>=n:
flag=True
break
if vis[x][y]==1:
continue
vis[x][y]=1
if (y+1<n and mat[x][y+1]=='.' and okay(x-1,y+1)==True):
q.append((x-1,y+3))
if (y+1<n and mat[x][y+1]=='.' and okay(x,y+1)==True):
q.append((x,y+3))
if (y+1<n and mat[x][y+1]=='.' and okay(x+1,y+1)==True):
q.append((x+1,y+3))
if flag:
print("YES")
else:
print("NO")
# ls=list(map(int, input().split()))
# d=defaultdict(list)'''
from collections import defaultdict
#for _ in range(int(input())):
n=int(input())
#n,k= map(int, input().split())
#arr=sorted([i,j for i,j in enumerate(input().split())])
s=input()
t=input()
n=len(s)
f=0
l=0
i=0
while s[i]==t[i]:
i+=1
j=n-1
while s[j]==t[j]:
j-=1
if (i==j) or ((s[i:j-1]==t[i+1:j]+s[i+1:j]==t[i:j-1])==2):
print(2)
elif s[i:j-1]==t[i+1:j] or s[i+1:j]==t[i:j-1]:
print(1)
else:
print(0)
#print(i, j)
``` | instruction | 0 | 99,820 | 18 | 199,640 |
No | output | 1 | 99,820 | 18 | 199,641 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Analyzing the mistakes people make while typing search queries is a complex and an interesting work. As there is no guaranteed way to determine what the user originally meant by typing some query, we have to use different sorts of heuristics.
Polycarp needed to write a code that could, given two words, check whether they could have been obtained from the same word as a result of typos. Polycarpus suggested that the most common typo is skipping exactly one letter as you type a word.
Implement a program that can, given two distinct words S and T of the same length n determine how many words W of length n + 1 are there with such property that you can transform W into both S, and T by deleting exactly one character. Words S and T consist of lowercase English letters. Word W also should consist of lowercase English letters.
Input
The first line contains integer n (1 ≤ n ≤ 100 000) — the length of words S and T.
The second line contains word S.
The third line contains word T.
Words S and T consist of lowercase English letters. It is guaranteed that S and T are distinct words.
Output
Print a single integer — the number of distinct words W that can be transformed to S and T due to a typo.
Examples
Input
7
reading
trading
Output
1
Input
5
sweet
sheep
Output
0
Input
3
toy
try
Output
2
Note
In the first sample test the two given words could be obtained only from word "treading" (the deleted letters are marked in bold).
In the second sample test the two given words couldn't be obtained from the same word by removing one letter.
In the third sample test the two given words could be obtained from either word "tory" or word "troy".
Submitted Solution:
```
def check(pt1,pt2):
global count
while pt1<n and pt2<n:
if st1[pt1] ==st2[pt2]:
pt1+=1
pt2+=1
else:
if pt1+1 <n and st1[pt1+1] ==st2[pt2]:
pt1+=1
count+=1
elif pt2+1<n and st1[pt1] ==st2[pt2+1]:
pt2+=1
count+=1
elif (pt1+1 and pt2+1) <n and st1[pt1+1] ==st2[pt2+1]:
pt1+=1
pt2+=1
count+=1
else:
return 0
if count >2:
return 0
return 1
n=int(input())
st1=input()
st2=input()
count=0
c=check(0,0)
if c==1:
print(count%2 +1)
else:
print(0)
``` | instruction | 0 | 99,821 | 18 | 199,642 |
No | output | 1 | 99,821 | 18 | 199,643 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Valentin participates in a show called "Shockers". The rules are quite easy: jury selects one letter which Valentin doesn't know. He should make a small speech, but every time he pronounces a word that contains the selected letter, he receives an electric shock. He can make guesses which letter is selected, but for each incorrect guess he receives an electric shock too. The show ends when Valentin guesses the selected letter correctly.
Valentin can't keep in mind everything, so he could guess the selected letter much later than it can be uniquely determined and get excessive electric shocks. Excessive electric shocks are those which Valentin got after the moment the selected letter can be uniquely determined. You should find out the number of excessive electric shocks.
Input
The first line contains a single integer n (1 ≤ n ≤ 105) — the number of actions Valentin did.
The next n lines contain descriptions of his actions, each line contains description of one action. Each action can be of one of three types:
1. Valentin pronounced some word and didn't get an electric shock. This action is described by the string ". w" (without quotes), in which "." is a dot (ASCII-code 46), and w is the word that Valentin said.
2. Valentin pronounced some word and got an electric shock. This action is described by the string "! w" (without quotes), in which "!" is an exclamation mark (ASCII-code 33), and w is the word that Valentin said.
3. Valentin made a guess about the selected letter. This action is described by the string "? s" (without quotes), in which "?" is a question mark (ASCII-code 63), and s is the guess — a lowercase English letter.
All words consist only of lowercase English letters. The total length of all words does not exceed 105.
It is guaranteed that last action is a guess about the selected letter. Also, it is guaranteed that Valentin didn't make correct guesses about the selected letter before the last action. Moreover, it's guaranteed that if Valentin got an electric shock after pronouncing some word, then it contains the selected letter; and also if Valentin didn't get an electric shock after pronouncing some word, then it does not contain the selected letter.
Output
Output a single integer — the number of electric shocks that Valentin could have avoided if he had told the selected letter just after it became uniquely determined.
Examples
Input
5
! abc
. ad
. b
! cd
? c
Output
1
Input
8
! hello
! codeforces
? c
. o
? d
? h
. l
? e
Output
2
Input
7
! ababahalamaha
? a
? b
? a
? b
? a
? h
Output
0
Note
In the first test case after the first action it becomes clear that the selected letter is one of the following: a, b, c. After the second action we can note that the selected letter is not a. Valentin tells word "b" and doesn't get a shock. After that it is clear that the selected letter is c, but Valentin pronounces the word cd and gets an excessive electric shock.
In the second test case after the first two electric shocks we understand that the selected letter is e or o. Valentin tries some words consisting of these letters and after the second word it's clear that the selected letter is e, but Valentin makes 3 more actions before he makes a correct hypothesis.
In the third example the selected letter can be uniquely determined only when Valentin guesses it, so he didn't get excessive electric shocks.
Submitted Solution:
```
n = int(input())
candidates = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'}
count = 0
for i in range(n - 1):
action, word = input().split()
if len(candidates) == 1:
if action != '.':
count += 1
else:
if action == '?':
candidates.discard(word)
elif action == '.':
for letter in word:
candidates.discard(letter)
else:
toremove = set()
for letter in candidates:
if letter not in word:
toremove.add(letter)
candidates = candidates.difference(toremove)
print(count)
``` | instruction | 0 | 100,037 | 18 | 200,074 |
Yes | output | 1 | 100,037 | 18 | 200,075 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Valentin participates in a show called "Shockers". The rules are quite easy: jury selects one letter which Valentin doesn't know. He should make a small speech, but every time he pronounces a word that contains the selected letter, he receives an electric shock. He can make guesses which letter is selected, but for each incorrect guess he receives an electric shock too. The show ends when Valentin guesses the selected letter correctly.
Valentin can't keep in mind everything, so he could guess the selected letter much later than it can be uniquely determined and get excessive electric shocks. Excessive electric shocks are those which Valentin got after the moment the selected letter can be uniquely determined. You should find out the number of excessive electric shocks.
Input
The first line contains a single integer n (1 ≤ n ≤ 105) — the number of actions Valentin did.
The next n lines contain descriptions of his actions, each line contains description of one action. Each action can be of one of three types:
1. Valentin pronounced some word and didn't get an electric shock. This action is described by the string ". w" (without quotes), in which "." is a dot (ASCII-code 46), and w is the word that Valentin said.
2. Valentin pronounced some word and got an electric shock. This action is described by the string "! w" (without quotes), in which "!" is an exclamation mark (ASCII-code 33), and w is the word that Valentin said.
3. Valentin made a guess about the selected letter. This action is described by the string "? s" (without quotes), in which "?" is a question mark (ASCII-code 63), and s is the guess — a lowercase English letter.
All words consist only of lowercase English letters. The total length of all words does not exceed 105.
It is guaranteed that last action is a guess about the selected letter. Also, it is guaranteed that Valentin didn't make correct guesses about the selected letter before the last action. Moreover, it's guaranteed that if Valentin got an electric shock after pronouncing some word, then it contains the selected letter; and also if Valentin didn't get an electric shock after pronouncing some word, then it does not contain the selected letter.
Output
Output a single integer — the number of electric shocks that Valentin could have avoided if he had told the selected letter just after it became uniquely determined.
Examples
Input
5
! abc
. ad
. b
! cd
? c
Output
1
Input
8
! hello
! codeforces
? c
. o
? d
? h
. l
? e
Output
2
Input
7
! ababahalamaha
? a
? b
? a
? b
? a
? h
Output
0
Note
In the first test case after the first action it becomes clear that the selected letter is one of the following: a, b, c. After the second action we can note that the selected letter is not a. Valentin tells word "b" and doesn't get a shock. After that it is clear that the selected letter is c, but Valentin pronounces the word cd and gets an excessive electric shock.
In the second test case after the first two electric shocks we understand that the selected letter is e or o. Valentin tries some words consisting of these letters and after the second word it's clear that the selected letter is e, but Valentin makes 3 more actions before he makes a correct hypothesis.
In the third example the selected letter can be uniquely determined only when Valentin guesses it, so he didn't get excessive electric shocks.
Submitted Solution:
```
n = int(input())
sym = []
word = []
dict = {}
for z in range(26):
dict[chr(97 + z)] = 1
for x in range(n):
a, b = input().split()
sym.append(a)
word.append(b)
q = -1
flag = 0
for x in range(n):
if sym[x] == '!':
flag = 1
sety = set()
for i in range(26):
if (dict[chr(97 + i)] == 0):
sety.add(chr(97 + i))
dict[chr(97 + i)] = 0
for s in word[x]:
dict[s] = 1
for s in sety:
dict[s] = 0
if sym[x] == '.':
for s in word[x]:
dict[s] = 0
if sym[x] == '?':
for s in word[x]:
dict[s] = 0
j = 0
for i in range(26):
j += dict[chr(97 + i)]
if j == 1:
q = x
break
count = 0
if q==-1:
print(0)
else:
for p in range(q+1,n-1):
if sym[p] == '!' or sym[p]=='?':
count+=1
print(count)
``` | instruction | 0 | 100,038 | 18 | 200,076 |
Yes | output | 1 | 100,038 | 18 | 200,077 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Valentin participates in a show called "Shockers". The rules are quite easy: jury selects one letter which Valentin doesn't know. He should make a small speech, but every time he pronounces a word that contains the selected letter, he receives an electric shock. He can make guesses which letter is selected, but for each incorrect guess he receives an electric shock too. The show ends when Valentin guesses the selected letter correctly.
Valentin can't keep in mind everything, so he could guess the selected letter much later than it can be uniquely determined and get excessive electric shocks. Excessive electric shocks are those which Valentin got after the moment the selected letter can be uniquely determined. You should find out the number of excessive electric shocks.
Input
The first line contains a single integer n (1 ≤ n ≤ 105) — the number of actions Valentin did.
The next n lines contain descriptions of his actions, each line contains description of one action. Each action can be of one of three types:
1. Valentin pronounced some word and didn't get an electric shock. This action is described by the string ". w" (without quotes), in which "." is a dot (ASCII-code 46), and w is the word that Valentin said.
2. Valentin pronounced some word and got an electric shock. This action is described by the string "! w" (without quotes), in which "!" is an exclamation mark (ASCII-code 33), and w is the word that Valentin said.
3. Valentin made a guess about the selected letter. This action is described by the string "? s" (without quotes), in which "?" is a question mark (ASCII-code 63), and s is the guess — a lowercase English letter.
All words consist only of lowercase English letters. The total length of all words does not exceed 105.
It is guaranteed that last action is a guess about the selected letter. Also, it is guaranteed that Valentin didn't make correct guesses about the selected letter before the last action. Moreover, it's guaranteed that if Valentin got an electric shock after pronouncing some word, then it contains the selected letter; and also if Valentin didn't get an electric shock after pronouncing some word, then it does not contain the selected letter.
Output
Output a single integer — the number of electric shocks that Valentin could have avoided if he had told the selected letter just after it became uniquely determined.
Examples
Input
5
! abc
. ad
. b
! cd
? c
Output
1
Input
8
! hello
! codeforces
? c
. o
? d
? h
. l
? e
Output
2
Input
7
! ababahalamaha
? a
? b
? a
? b
? a
? h
Output
0
Note
In the first test case after the first action it becomes clear that the selected letter is one of the following: a, b, c. After the second action we can note that the selected letter is not a. Valentin tells word "b" and doesn't get a shock. After that it is clear that the selected letter is c, but Valentin pronounces the word cd and gets an excessive electric shock.
In the second test case after the first two electric shocks we understand that the selected letter is e or o. Valentin tries some words consisting of these letters and after the second word it's clear that the selected letter is e, but Valentin makes 3 more actions before he makes a correct hypothesis.
In the third example the selected letter can be uniquely determined only when Valentin guesses it, so he didn't get excessive electric shocks.
Submitted Solution:
```
from collections import *
import os, sys
from io import BytesIO, IOBase
class FastIO(IOBase):
newlines = 0
def __init__(self, file):
self._fd = file.fileno()
self.buffer = BytesIO()
self.writable = "x" in file.mode or "r" not in file.mode
self.write = self.buffer.write if self.writable else None
def read(self):
while True:
b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
if not b:
break
ptr = self.buffer.tell()
self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
self.newlines = 0
return self.buffer.read()
def readline(self):
while self.newlines == 0:
b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
self.newlines = b.count(b"\n") + (not b)
ptr = self.buffer.tell()
self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
self.newlines -= 1
return self.buffer.readline()
def flush(self):
if self.writable:
os.write(self._fd, self.buffer.getvalue())
self.buffer.truncate(0), self.buffer.seek(0)
class IOWrapper(IOBase):
def __init__(self, file):
self.buffer = FastIO(file)
self.flush = self.buffer.flush
self.writable = self.buffer.writable
self.write = lambda s: self.buffer.write(s.encode("ascii"))
self.read = lambda: self.buffer.read().decode("ascii")
self.readline = lambda: self.buffer.readline().decode("ascii")
BUFSIZE = 8192
sys.stdin, sys.stdout = IOWrapper(sys.stdin), IOWrapper(sys.stdout)
input = lambda: sys.stdin.readline().rstrip("\r\n")
rstr = lambda: input().strip()
rstrs = lambda: [str(x) for x in input().split()]
rstr_2d = lambda n: [rstr() for _ in range(n)]
rint = lambda: int(input())
rints = lambda: [int(x) for x in input().split()]
rint_2d = lambda n: [rint() for _ in range(n)]
rints_2d = lambda n: [rints() for _ in range(n)]
ceil1 = lambda a, b: (a + b - 1) // b
mem, ans = set('abcdefghijklmnopqrstuvwxyz'), 0
for _ in range(rint() - 1):
ch, word = rstrs()
if ch == '.':
mem.difference_update(list(word))
elif ch == '?':
if len(mem) > 1:
mem.discard(word)
elif mem:
ans += 1
else:
if len(mem) == 1:
ans += 1
else:
mem.intersection_update(list(word))
print(ans)
``` | instruction | 0 | 100,039 | 18 | 200,078 |
Yes | output | 1 | 100,039 | 18 | 200,079 |
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