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.
You are given a image with a height of H pixels and a width of W pixels. Each pixel is represented by a lowercase English letter. The pixel at the i-th row from the top and j-th column from the left is a_{ij}.
Put a box around this image and output the result. The box should consist of `#` and have a thickness of 1.
Constraints
* 1 β€ H, W β€ 100
* a_{ij} is a lowercase English letter.
Input
Input is given from Standard Input in the following format:
H W
a_{11} ... a_{1W}
:
a_{H1} ... a_{HW}
Output
Print the image surrounded by a box that consists of `#` and has a thickness of 1.
Examples
Input
2 3
abc
arc
Output
#####
#abc#
#arc#
#####
Input
1 1
z
Output
z# | instruction | 0 | 97,725 | 18 | 195,450 |
"Correct Solution:
```
h,w=map(int,input().split())
b=''.join(['#']*(w+2))
print(b)
for i in range(h):print('#'+input()+'#')
print(b)
``` | output | 1 | 97,725 | 18 | 195,451 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a image with a height of H pixels and a width of W pixels. Each pixel is represented by a lowercase English letter. The pixel at the i-th row from the top and j-th column from the left is a_{ij}.
Put a box around this image and output the result. The box should consist of `#` and have a thickness of 1.
Constraints
* 1 β€ H, W β€ 100
* a_{ij} is a lowercase English letter.
Input
Input is given from Standard Input in the following format:
H W
a_{11} ... a_{1W}
:
a_{H1} ... a_{HW}
Output
Print the image surrounded by a box that consists of `#` and has a thickness of 1.
Examples
Input
2 3
abc
arc
Output
#####
#abc#
#arc#
#####
Input
1 1
z
Output
z# | instruction | 0 | 97,726 | 18 | 195,452 |
"Correct Solution:
```
h,w = map(int,input().split())
print('#'*(w+2))
for i in range(0,h):
print('#'+input()+'#')
print('#'*(w+2))
``` | output | 1 | 97,726 | 18 | 195,453 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a image with a height of H pixels and a width of W pixels. Each pixel is represented by a lowercase English letter. The pixel at the i-th row from the top and j-th column from the left is a_{ij}.
Put a box around this image and output the result. The box should consist of `#` and have a thickness of 1.
Constraints
* 1 β€ H, W β€ 100
* a_{ij} is a lowercase English letter.
Input
Input is given from Standard Input in the following format:
H W
a_{11} ... a_{1W}
:
a_{H1} ... a_{HW}
Output
Print the image surrounded by a box that consists of `#` and has a thickness of 1.
Examples
Input
2 3
abc
arc
Output
#####
#abc#
#arc#
#####
Input
1 1
z
Output
z#
Submitted Solution:
```
N, M = map(int, input().split())
print("#"*(M+2))
for _ in range(N):
print("#"+input()+"#")
print("#"*(M+2))
``` | instruction | 0 | 97,727 | 18 | 195,454 |
Yes | output | 1 | 97,727 | 18 | 195,455 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a image with a height of H pixels and a width of W pixels. Each pixel is represented by a lowercase English letter. The pixel at the i-th row from the top and j-th column from the left is a_{ij}.
Put a box around this image and output the result. The box should consist of `#` and have a thickness of 1.
Constraints
* 1 β€ H, W β€ 100
* a_{ij} is a lowercase English letter.
Input
Input is given from Standard Input in the following format:
H W
a_{11} ... a_{1W}
:
a_{H1} ... a_{HW}
Output
Print the image surrounded by a box that consists of `#` and has a thickness of 1.
Examples
Input
2 3
abc
arc
Output
#####
#abc#
#arc#
#####
Input
1 1
z
Output
z#
Submitted Solution:
```
H,W=map(int,input().split())
print('#'*(W+2))
for h in range(H):
a=input()
print('#'+a+'#')
print('#'*(W+2))
``` | instruction | 0 | 97,728 | 18 | 195,456 |
Yes | output | 1 | 97,728 | 18 | 195,457 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a image with a height of H pixels and a width of W pixels. Each pixel is represented by a lowercase English letter. The pixel at the i-th row from the top and j-th column from the left is a_{ij}.
Put a box around this image and output the result. The box should consist of `#` and have a thickness of 1.
Constraints
* 1 β€ H, W β€ 100
* a_{ij} is a lowercase English letter.
Input
Input is given from Standard Input in the following format:
H W
a_{11} ... a_{1W}
:
a_{H1} ... a_{HW}
Output
Print the image surrounded by a box that consists of `#` and has a thickness of 1.
Examples
Input
2 3
abc
arc
Output
#####
#abc#
#arc#
#####
Input
1 1
z
Output
z#
Submitted Solution:
```
H, W = map(int, input().split())
a = ["#"*(W+2)] + ["#"+input()+"#" for _ in range(H)] + ["#"*(W+2)]
print("\n".join(a))
``` | instruction | 0 | 97,729 | 18 | 195,458 |
Yes | output | 1 | 97,729 | 18 | 195,459 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a image with a height of H pixels and a width of W pixels. Each pixel is represented by a lowercase English letter. The pixel at the i-th row from the top and j-th column from the left is a_{ij}.
Put a box around this image and output the result. The box should consist of `#` and have a thickness of 1.
Constraints
* 1 β€ H, W β€ 100
* a_{ij} is a lowercase English letter.
Input
Input is given from Standard Input in the following format:
H W
a_{11} ... a_{1W}
:
a_{H1} ... a_{HW}
Output
Print the image surrounded by a box that consists of `#` and has a thickness of 1.
Examples
Input
2 3
abc
arc
Output
#####
#abc#
#arc#
#####
Input
1 1
z
Output
z#
Submitted Solution:
```
h,w=map(int,input().split())
print("#"*(w+2))
for i in range(h):
x=input()
print("#"+x+"#")
print("#"*(w+2))
``` | instruction | 0 | 97,730 | 18 | 195,460 |
Yes | output | 1 | 97,730 | 18 | 195,461 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a image with a height of H pixels and a width of W pixels. Each pixel is represented by a lowercase English letter. The pixel at the i-th row from the top and j-th column from the left is a_{ij}.
Put a box around this image and output the result. The box should consist of `#` and have a thickness of 1.
Constraints
* 1 β€ H, W β€ 100
* a_{ij} is a lowercase English letter.
Input
Input is given from Standard Input in the following format:
H W
a_{11} ... a_{1W}
:
a_{H1} ... a_{HW}
Output
Print the image surrounded by a box that consists of `#` and has a thickness of 1.
Examples
Input
2 3
abc
arc
Output
#####
#abc#
#arc#
#####
Input
1 1
z
Output
z#
Submitted Solution:
```
H, W=map(int,input().split())
print("#"*(w+2))
for i in range(h):
s=input()
s="#"+s+"#"
print(s)
print("#"*(w+2))
``` | instruction | 0 | 97,731 | 18 | 195,462 |
No | output | 1 | 97,731 | 18 | 195,463 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a image with a height of H pixels and a width of W pixels. Each pixel is represented by a lowercase English letter. The pixel at the i-th row from the top and j-th column from the left is a_{ij}.
Put a box around this image and output the result. The box should consist of `#` and have a thickness of 1.
Constraints
* 1 β€ H, W β€ 100
* a_{ij} is a lowercase English letter.
Input
Input is given from Standard Input in the following format:
H W
a_{11} ... a_{1W}
:
a_{H1} ... a_{HW}
Output
Print the image surrounded by a box that consists of `#` and has a thickness of 1.
Examples
Input
2 3
abc
arc
Output
#####
#abc#
#arc#
#####
Input
1 1
z
Output
z#
Submitted Solution:
```
h,w=map(int,input().split())
ans=[['']*(w+2)]*(h+2)
ans[0] = ['#' for i in range(w+2)]
ans[-1] = ['#' for i in range(w+2)]
for i in range(h):
ans[i+1][1:w+1] = list(input())
ans[i+1][0] = '#'
ans[i+1][-1] = '#'
for i in range(h+2):
print(*ans[i],sep='')
``` | instruction | 0 | 97,732 | 18 | 195,464 |
No | output | 1 | 97,732 | 18 | 195,465 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a image with a height of H pixels and a width of W pixels. Each pixel is represented by a lowercase English letter. The pixel at the i-th row from the top and j-th column from the left is a_{ij}.
Put a box around this image and output the result. The box should consist of `#` and have a thickness of 1.
Constraints
* 1 β€ H, W β€ 100
* a_{ij} is a lowercase English letter.
Input
Input is given from Standard Input in the following format:
H W
a_{11} ... a_{1W}
:
a_{H1} ... a_{HW}
Output
Print the image surrounded by a box that consists of `#` and has a thickness of 1.
Examples
Input
2 3
abc
arc
Output
#####
#abc#
#arc#
#####
Input
1 1
z
Output
z#
Submitted Solution:
```
# python template for atcoder1
import sys
sys.setrecursionlimit(10**9)
H, W = map(int, input().split())
grid = [["#"]*(W+2) for _ in range(H+2)]
for i in range(1, H+1):
for j, c in enumerate(input()):
grid[i][j+1] = c
for i in grid:
print(i)
``` | instruction | 0 | 97,733 | 18 | 195,466 |
No | output | 1 | 97,733 | 18 | 195,467 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a image with a height of H pixels and a width of W pixels. Each pixel is represented by a lowercase English letter. The pixel at the i-th row from the top and j-th column from the left is a_{ij}.
Put a box around this image and output the result. The box should consist of `#` and have a thickness of 1.
Constraints
* 1 β€ H, W β€ 100
* a_{ij} is a lowercase English letter.
Input
Input is given from Standard Input in the following format:
H W
a_{11} ... a_{1W}
:
a_{H1} ... a_{HW}
Output
Print the image surrounded by a box that consists of `#` and has a thickness of 1.
Examples
Input
2 3
abc
arc
Output
#####
#abc#
#arc#
#####
Input
1 1
z
Output
z#
Submitted Solution:
```
h,w = map(int,input().split())
a = [0]*h
for i in range(h):
a[i] = input().split()
for i in range(h+2):
for j in range(w+2):
if i == 0 or i == h+1:
print('#',end='')
elif j == 0 or j == w+1:
print('#',end='')
else:
print(a[i-1][j-1],end='')
print()
``` | instruction | 0 | 97,734 | 18 | 195,468 |
No | output | 1 | 97,734 | 18 | 195,469 |
Provide a correct Python 3 solution for this coding contest problem.
Mathematical expressions appearing in old papers and old technical articles are printed with typewriter in several lines, where a fixed-width or monospaced font is required to print characters (digits, symbols and spaces). Let us consider the following mathematical expression.
<image>
It is printed in the following four lines:
4 2
( 1 - ---- ) * - 5 + 6
2
3
where "- 5" indicates unary minus followed by 5. We call such an expression of lines "ASCII expression".
For helping those who want to evaluate ASCII expressions obtained through optical character recognition (OCR) from old papers, your job is to write a program that recognizes the structure of ASCII expressions and computes their values.
For the sake of simplicity, you may assume that ASCII expressions are constructed by the following rules. Its syntax is shown in Table H.1.
(1) | Terminal symbols are '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '-', '*', '(', ')', and ' '.
---|---
(2) | Nonterminal symbols are expr, term, factor, powexpr, primary, fraction and digit. The start symbol is expr.
(3) | A "cell" is a rectangular region of characters that corresponds to a terminal or nonterminal symbol (Figure H.1). In the cell, there are no redundant rows and columns that consist only of space characters. A cell corresponding to a terminal symbol consists of a single character. A cell corresponding to a nonterminal symbol contains cell(s) corresponding to its descendant(s) but never partially overlaps others.
(4) | Each cell has a base-line, a top-line, and a bottom-line. The base-lines of child cells of the right-hand side of rules I, II, III, and V should be aligned. Their vertical position defines the base-line position of their left-hand side cell.
Table H.1: Rules for constructing ASCII expressions (similar to Backus-Naur Form) The box indicates the cell of the terminal or nonterminal symbol that corresponds to a rectan- gular region of characters. Note that each syntactically-needed space character is explicitly indicated by the period character denoted by, here.
<image>
(5) | powexpr consists of a primary and an optional digit. The digit is placed one line above the base-line of the primary cell. They are horizontally adjacent to each other. The base-line of a powexpr is that of the primary.
(6) | fraction is indicated by three or more consecutive hyphens called "vinculum". Its dividend expr is placed just above the vinculum, and its divisor expr is placed just beneath it. The number of the hyphens of the vinculum, denoted by wh, is equal to 2 + max(w1, w2), where w1 and w2 indicate the width of the cell of the dividend and that of the divisor, respectively. These cells are centered, where there are β(whβwk)/2β space characters to the left and β(whβwk)/2β space characters to the right, (k = 1, 2). The base-line of a fraction is at the position of the vinculum. | (7) | digit consists of one character.
For example, the negative fraction<image> is represented in three lines:
3
- ---
4
where the left-most hyphen means a unary minus operator. One space character is required between the unary minus and the vinculum of the fraction.
The fraction <image> is represented in four lines:
3 + 4 * - 2
-------------
2
- 1 - 2
where the widths of the cells of the dividend and divisor are 11 and 8 respectively. Hence the number of hyphens of the vinculum is 2 + max(11, 8) = 13. The divisor is centered by β(13β8)/2β = 3 space characters (hyphens) to the left and β(13β8)/2β = 2 to the right.
The powexpr (42)3 is represented in two lines:
2 3
( 4 )
where the cell for 2 is placed one line above the base-line of the cell for 4, and the cell for 3 is placed one line above the base-line of the cell for a primary (42).
Input
The input consists of multiple datasets, followed by a line containing a zero. Each dataset has the following format.
n
str1
str2
.
.
.
strn
n is a positive integer, which indicates the number of the following lines with the same length that represent the cell of an ASCII expression. strk is the k-th line of the cell where each space character is replaced with a period.
You may assume that n β€ 20 and that the length of the lines is no more than 80.
Output
For each dataset, one line containing a non-negative integer less than 2011 should be output. The integer indicates the value of the ASCII expression in modular arithmetic under modulo 2011. The output should not contain any other characters.
There is no fraction with the divisor that is equal to zero or a multiple of 2011.
Note that powexpr x0 is defined as 1, and xy (y is a positive integer) is defined as the product xΓxΓ...Γx where the number of x's is equal to y.
A fraction<image>is computed as the multiplication of x and the inverse of y, i.e., xΓ inv(y), under y modulo 2011. The inverse of y (1 β€ y < 2011) is uniquely defined as the integer z (1 β€ z < 2011) that satisfies z Γ y β‘ 1 (mod 2011), since 2011 is a prime number.
Example
Input
4
........4...2..........
(.1.-.----.)..*.-.5.+.6
........2..............
.......3...............
3
...3.
-.---
...4.
4
.3.+.4.*.-.2.
-------------
..........2..
...-.1.-.2...
2
...2..3
(.4..).
1
2.+.3.*.5.-.7.+.9
1
(.2.+.3.).*.(.5.-.7.).+.9
3
.2....3.
4..+.---
......5.
3
.2......-.-.3.
4..-.-.-------
..........5...
9
............1............
-------------------------
..............1..........
.1.+.-------------------.
................1........
......1.+.-------------..
..................1......
...........1.+.-------...
................1.+.2....
15
.................2......
................---.....
.......2.........5....3.
.(.---------.+.-----.)..
.....7...........3......
....---.+.1.............
.....4..................
------------------------
.......2................
......---...............
.......5.......2....2...
...(.-----.+.-----.)....
.......3.......3........
..............---.......
...............4........
2
.0....2....
3..+.4..*.5
20
............2............................2......................................
...........3............................3.......................................
..........----.........................----.....................................
............4............................4......................................
.....2.+.------.+.1...............2.+.------.+.1................................
............2............................2......................................
...........2............................2........................2..............
..........----.........................----.....................3...............
............2............................2.....................----.............
...........3............................3........................4..............
(.(.----------------.+.2.+.3.).*.----------------.+.2.).*.2.+.------.+.1.+.2.*.5
............2............................2.......................2..............
...........5............................5.......................2...............
..........----.........................----....................----.............
............6............................6.......................2..............
.........------.......................------....................3...............
............3............................3......................................
..........----.........................----.....................................
............2............................2......................................
...........7............................7.......................................
0
Output
501
502
1
74
19
2010
821
821
1646
148
81
1933 | instruction | 0 | 97,775 | 18 | 195,550 |
"Correct Solution:
```
MOD = 2011
while 1:
n = int(input())
if n == 0:
break
S = [input() for i in range(n)]
w = len(S[0])
def parse(bcur, bright, top, bottom):
#print("parse", bcur, bright, top, bottom)
base = -1
for i in range(bcur, bright):
for j in range(top, bottom+1):
if S[j][i] != '.':
base = j
break
if base != -1:
break
cur = bcur
def read():
nonlocal cur
c = None
while 0 <= base < n and cur < bright:
#print("cur", base, cur, bright)
#print(S[base][cur:])
c = S[base][cur]
if c != '.':
break
cur += 1
return c
def fraction():
nonlocal cur
#print("fraction", cur, top, bottom)
left = cur
while cur < w and S[base][cur] == '-':
cur += 1
right = cur+1 if cur < w else cur
dividend = parse(left, right, top, base-1)
divisor = parse(left, right, base+1, bottom)
#print("deb", S[base][cur:], dividend, divisor)
#print("<fraction", dividend, divisor, (dividend * pow(divisor, MOD-2, MOD)) % MOD)
return (dividend * pow(divisor, MOD-2, MOD)) % MOD
def primary():
nonlocal cur
#print("primary", cur, top, bottom)
c = read()
if c == '(':
cur += 1 # '('
v = expr()
cur += 1 # ')'
#print("<primary", v)
return v
else:
cur += 1 # digit
#print("<primary", c)
return int(c)
def powexpr():
nonlocal cur
#print("powexpr", cur, top, bottom)
v = primary()
#print("<powexpr", cur, base, v)
if 0 < base and cur < bright and S[base-1][cur] in "0123456789":
#print("abc", v, int(S[base-1][cur]))
return pow(v, int(S[base-1][cur]), MOD)
return v
def factor():
nonlocal cur
#print("factor", cur, top, bottom)
c = read()
if c == '-':
if S[base][cur+1] == '.':
cur += 1 # '-'
return -factor()
else:
return fraction()
return powexpr()
def term():
nonlocal cur
#print("term", cur, top, bottom)
result = 1
while 1:
v = factor()
result *= v
result %= MOD
c = read()
if c != '*':
break
cur += 1
return result
def expr():
nonlocal cur
#print("expr", cur, top, bottom)
op = '+'
result = 0
while 1:
v = term()
#print("<expr", v)
c = read()
result += v if op == '+' else MOD-v
result %= MOD
if not c or c not in '+-':
#print("break", result, v, c, op)
break
cur += 1
op = c
#print("<result", result)
return result
v = expr()
#print("<parse", v)
return v
print(parse(0, w, 0, n-1))
``` | output | 1 | 97,775 | 18 | 195,551 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Problem statement
Given the string $ S $. Find the number of all anagrams in $ S $ that are palindromic.
An anagram of the string $ X $ is an anagram of $ Y $, which means that $ X $ is equal to $ Y $, or that the rearranged characters of $ X $ are equal to $ Y $. For example, for the string abcd, abcd and cbda are anagrams, but abed, cab and abcdd are not anagrams.
When the string $ X $ is a palindrome, it means that the reverse reading of $ X $ is equal to $ X $ itself. For example, abc and ab are not palindromes, and a and abccba are palindromes.
Constraint
* $ 1 \ leq | S | \ leq 40 $ ($ | S | $ is the length of the string $ S $)
* $ S $ contains only lowercase letters.
* The answer is guaranteed to be less than $ 2 ^ {63} $.
input
Input follows the following format.
$ S $
output
Output the number on one line.
Examples
Input
ab
Output
0
Input
abba
Output
2
Submitted Solution:
```
import itertools
c=0;b=[]
for x in itertools.permutations(input()):
if x not in b and x==x[::-1]:c+=1;b+=[x]
print(c)
``` | instruction | 0 | 97,794 | 18 | 195,588 |
No | output | 1 | 97,794 | 18 | 195,589 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Problem statement
Given the string $ S $. Find the number of all anagrams in $ S $ that are palindromic.
An anagram of the string $ X $ is an anagram of $ Y $, which means that $ X $ is equal to $ Y $, or that the rearranged characters of $ X $ are equal to $ Y $. For example, for the string abcd, abcd and cbda are anagrams, but abed, cab and abcdd are not anagrams.
When the string $ X $ is a palindrome, it means that the reverse reading of $ X $ is equal to $ X $ itself. For example, abc and ab are not palindromes, and a and abccba are palindromes.
Constraint
* $ 1 \ leq | S | \ leq 40 $ ($ | S | $ is the length of the string $ S $)
* $ S $ contains only lowercase letters.
* The answer is guaranteed to be less than $ 2 ^ {63} $.
input
Input follows the following format.
$ S $
output
Output the number on one line.
Examples
Input
ab
Output
0
Input
abba
Output
2
Submitted Solution:
```
import collections
from math import *
s=input()
a=collections.Counter(s)
o=0
for x in a:
if a[x]&1:o+=1
if o>1:print(0);break
a[x]-=1
else:
b=factorial(len(s)//2)
for x in a.values():
b//=factorial(x//2)
print(b)
``` | instruction | 0 | 97,795 | 18 | 195,590 |
No | output | 1 | 97,795 | 18 | 195,591 |
Provide a correct Python 3 solution for this coding contest problem.
Takahashi wants to be a member of some web service.
He tried to register himself with the ID S, which turned out to be already used by another user.
Thus, he decides to register using a string obtained by appending one character at the end of S as his ID.
He is now trying to register with the ID T. Determine whether this string satisfies the property above.
Constraints
* S and T are strings consisting of lowercase English letters.
* 1 \leq |S| \leq 10
* |T| = |S| + 1
Input
Input is given from Standard Input in the following format:
S
T
Output
If T satisfies the property in Problem Statement, print `Yes`; otherwise, print `No`.
Examples
Input
chokudai
chokudaiz
Output
Yes
Input
snuke
snekee
Output
No
Input
a
aa
Output
Yes | instruction | 0 | 98,399 | 18 | 196,798 |
"Correct Solution:
```
s = input()
t = input()
print('Yes' if s == t[:len(s)] else 'No')
``` | output | 1 | 98,399 | 18 | 196,799 |
Provide a correct Python 3 solution for this coding contest problem.
Takahashi wants to be a member of some web service.
He tried to register himself with the ID S, which turned out to be already used by another user.
Thus, he decides to register using a string obtained by appending one character at the end of S as his ID.
He is now trying to register with the ID T. Determine whether this string satisfies the property above.
Constraints
* S and T are strings consisting of lowercase English letters.
* 1 \leq |S| \leq 10
* |T| = |S| + 1
Input
Input is given from Standard Input in the following format:
S
T
Output
If T satisfies the property in Problem Statement, print `Yes`; otherwise, print `No`.
Examples
Input
chokudai
chokudaiz
Output
Yes
Input
snuke
snekee
Output
No
Input
a
aa
Output
Yes | instruction | 0 | 98,400 | 18 | 196,800 |
"Correct Solution:
```
s = input()
if s == input()[:-1]:
print("Yes")
else:
print("No")
``` | output | 1 | 98,400 | 18 | 196,801 |
Provide a correct Python 3 solution for this coding contest problem.
Takahashi wants to be a member of some web service.
He tried to register himself with the ID S, which turned out to be already used by another user.
Thus, he decides to register using a string obtained by appending one character at the end of S as his ID.
He is now trying to register with the ID T. Determine whether this string satisfies the property above.
Constraints
* S and T are strings consisting of lowercase English letters.
* 1 \leq |S| \leq 10
* |T| = |S| + 1
Input
Input is given from Standard Input in the following format:
S
T
Output
If T satisfies the property in Problem Statement, print `Yes`; otherwise, print `No`.
Examples
Input
chokudai
chokudaiz
Output
Yes
Input
snuke
snekee
Output
No
Input
a
aa
Output
Yes | instruction | 0 | 98,401 | 18 | 196,802 |
"Correct Solution:
```
s = input()
t = input()
r = 'Yes' if s == t[:-1] else 'No'
print(r)
``` | output | 1 | 98,401 | 18 | 196,803 |
Provide a correct Python 3 solution for this coding contest problem.
Takahashi wants to be a member of some web service.
He tried to register himself with the ID S, which turned out to be already used by another user.
Thus, he decides to register using a string obtained by appending one character at the end of S as his ID.
He is now trying to register with the ID T. Determine whether this string satisfies the property above.
Constraints
* S and T are strings consisting of lowercase English letters.
* 1 \leq |S| \leq 10
* |T| = |S| + 1
Input
Input is given from Standard Input in the following format:
S
T
Output
If T satisfies the property in Problem Statement, print `Yes`; otherwise, print `No`.
Examples
Input
chokudai
chokudaiz
Output
Yes
Input
snuke
snekee
Output
No
Input
a
aa
Output
Yes | instruction | 0 | 98,402 | 18 | 196,804 |
"Correct Solution:
```
print("YNeos"[input() != input()[:-1]::2])
``` | output | 1 | 98,402 | 18 | 196,805 |
Provide a correct Python 3 solution for this coding contest problem.
Takahashi wants to be a member of some web service.
He tried to register himself with the ID S, which turned out to be already used by another user.
Thus, he decides to register using a string obtained by appending one character at the end of S as his ID.
He is now trying to register with the ID T. Determine whether this string satisfies the property above.
Constraints
* S and T are strings consisting of lowercase English letters.
* 1 \leq |S| \leq 10
* |T| = |S| + 1
Input
Input is given from Standard Input in the following format:
S
T
Output
If T satisfies the property in Problem Statement, print `Yes`; otherwise, print `No`.
Examples
Input
chokudai
chokudaiz
Output
Yes
Input
snuke
snekee
Output
No
Input
a
aa
Output
Yes | instruction | 0 | 98,403 | 18 | 196,806 |
"Correct Solution:
```
S,T = input(),input()
print('Yes' if S==T[:-1] else 'No')
``` | output | 1 | 98,403 | 18 | 196,807 |
Provide a correct Python 3 solution for this coding contest problem.
Takahashi wants to be a member of some web service.
He tried to register himself with the ID S, which turned out to be already used by another user.
Thus, he decides to register using a string obtained by appending one character at the end of S as his ID.
He is now trying to register with the ID T. Determine whether this string satisfies the property above.
Constraints
* S and T are strings consisting of lowercase English letters.
* 1 \leq |S| \leq 10
* |T| = |S| + 1
Input
Input is given from Standard Input in the following format:
S
T
Output
If T satisfies the property in Problem Statement, print `Yes`; otherwise, print `No`.
Examples
Input
chokudai
chokudaiz
Output
Yes
Input
snuke
snekee
Output
No
Input
a
aa
Output
Yes | instruction | 0 | 98,404 | 18 | 196,808 |
"Correct Solution:
```
s=input();print('NYoe s'[s==input()[:len(s)]::2])
``` | output | 1 | 98,404 | 18 | 196,809 |
Provide a correct Python 3 solution for this coding contest problem.
Takahashi wants to be a member of some web service.
He tried to register himself with the ID S, which turned out to be already used by another user.
Thus, he decides to register using a string obtained by appending one character at the end of S as his ID.
He is now trying to register with the ID T. Determine whether this string satisfies the property above.
Constraints
* S and T are strings consisting of lowercase English letters.
* 1 \leq |S| \leq 10
* |T| = |S| + 1
Input
Input is given from Standard Input in the following format:
S
T
Output
If T satisfies the property in Problem Statement, print `Yes`; otherwise, print `No`.
Examples
Input
chokudai
chokudaiz
Output
Yes
Input
snuke
snekee
Output
No
Input
a
aa
Output
Yes | instruction | 0 | 98,405 | 18 | 196,810 |
"Correct Solution:
```
print("Yes") if input()==input()[:-1] else print("No")
``` | output | 1 | 98,405 | 18 | 196,811 |
Provide a correct Python 3 solution for this coding contest problem.
Takahashi wants to be a member of some web service.
He tried to register himself with the ID S, which turned out to be already used by another user.
Thus, he decides to register using a string obtained by appending one character at the end of S as his ID.
He is now trying to register with the ID T. Determine whether this string satisfies the property above.
Constraints
* S and T are strings consisting of lowercase English letters.
* 1 \leq |S| \leq 10
* |T| = |S| + 1
Input
Input is given from Standard Input in the following format:
S
T
Output
If T satisfies the property in Problem Statement, print `Yes`; otherwise, print `No`.
Examples
Input
chokudai
chokudaiz
Output
Yes
Input
snuke
snekee
Output
No
Input
a
aa
Output
Yes | instruction | 0 | 98,406 | 18 | 196,812 |
"Correct Solution:
```
a=input()
b=input()
if a==b[0:-1]:
print('Yes')
else:
print('No')
``` | output | 1 | 98,406 | 18 | 196,813 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Takahashi wants to be a member of some web service.
He tried to register himself with the ID S, which turned out to be already used by another user.
Thus, he decides to register using a string obtained by appending one character at the end of S as his ID.
He is now trying to register with the ID T. Determine whether this string satisfies the property above.
Constraints
* S and T are strings consisting of lowercase English letters.
* 1 \leq |S| \leq 10
* |T| = |S| + 1
Input
Input is given from Standard Input in the following format:
S
T
Output
If T satisfies the property in Problem Statement, print `Yes`; otherwise, print `No`.
Examples
Input
chokudai
chokudaiz
Output
Yes
Input
snuke
snekee
Output
No
Input
a
aa
Output
Yes
Submitted Solution:
```
s,d=[input(),input()]
print("Yes") if s==d[:-1] else print("No")
``` | instruction | 0 | 98,407 | 18 | 196,814 |
Yes | output | 1 | 98,407 | 18 | 196,815 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Takahashi wants to be a member of some web service.
He tried to register himself with the ID S, which turned out to be already used by another user.
Thus, he decides to register using a string obtained by appending one character at the end of S as his ID.
He is now trying to register with the ID T. Determine whether this string satisfies the property above.
Constraints
* S and T are strings consisting of lowercase English letters.
* 1 \leq |S| \leq 10
* |T| = |S| + 1
Input
Input is given from Standard Input in the following format:
S
T
Output
If T satisfies the property in Problem Statement, print `Yes`; otherwise, print `No`.
Examples
Input
chokudai
chokudaiz
Output
Yes
Input
snuke
snekee
Output
No
Input
a
aa
Output
Yes
Submitted Solution:
```
S = input()
T = input()
print("Yes") if S == T[:-1] else print("No")
``` | instruction | 0 | 98,408 | 18 | 196,816 |
Yes | output | 1 | 98,408 | 18 | 196,817 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Takahashi wants to be a member of some web service.
He tried to register himself with the ID S, which turned out to be already used by another user.
Thus, he decides to register using a string obtained by appending one character at the end of S as his ID.
He is now trying to register with the ID T. Determine whether this string satisfies the property above.
Constraints
* S and T are strings consisting of lowercase English letters.
* 1 \leq |S| \leq 10
* |T| = |S| + 1
Input
Input is given from Standard Input in the following format:
S
T
Output
If T satisfies the property in Problem Statement, print `Yes`; otherwise, print `No`.
Examples
Input
chokudai
chokudaiz
Output
Yes
Input
snuke
snekee
Output
No
Input
a
aa
Output
Yes
Submitted Solution:
```
k = input()
s = input()
print("Yes" if s[:-1] == k else "No")
``` | instruction | 0 | 98,409 | 18 | 196,818 |
Yes | output | 1 | 98,409 | 18 | 196,819 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Takahashi wants to be a member of some web service.
He tried to register himself with the ID S, which turned out to be already used by another user.
Thus, he decides to register using a string obtained by appending one character at the end of S as his ID.
He is now trying to register with the ID T. Determine whether this string satisfies the property above.
Constraints
* S and T are strings consisting of lowercase English letters.
* 1 \leq |S| \leq 10
* |T| = |S| + 1
Input
Input is given from Standard Input in the following format:
S
T
Output
If T satisfies the property in Problem Statement, print `Yes`; otherwise, print `No`.
Examples
Input
chokudai
chokudaiz
Output
Yes
Input
snuke
snekee
Output
No
Input
a
aa
Output
Yes
Submitted Solution:
```
S = input()
T = input()
print('Yes' if S[:] == T[:-1] else 'No')
``` | instruction | 0 | 98,410 | 18 | 196,820 |
Yes | output | 1 | 98,410 | 18 | 196,821 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Takahashi wants to be a member of some web service.
He tried to register himself with the ID S, which turned out to be already used by another user.
Thus, he decides to register using a string obtained by appending one character at the end of S as his ID.
He is now trying to register with the ID T. Determine whether this string satisfies the property above.
Constraints
* S and T are strings consisting of lowercase English letters.
* 1 \leq |S| \leq 10
* |T| = |S| + 1
Input
Input is given from Standard Input in the following format:
S
T
Output
If T satisfies the property in Problem Statement, print `Yes`; otherwise, print `No`.
Examples
Input
chokudai
chokudaiz
Output
Yes
Input
snuke
snekee
Output
No
Input
a
aa
Output
Yes
Submitted Solution:
```
S = input()
T = input()
if len(S)+1 == len(T):
print('Yes')
else:
print('No')
``` | instruction | 0 | 98,411 | 18 | 196,822 |
No | output | 1 | 98,411 | 18 | 196,823 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Takahashi wants to be a member of some web service.
He tried to register himself with the ID S, which turned out to be already used by another user.
Thus, he decides to register using a string obtained by appending one character at the end of S as his ID.
He is now trying to register with the ID T. Determine whether this string satisfies the property above.
Constraints
* S and T are strings consisting of lowercase English letters.
* 1 \leq |S| \leq 10
* |T| = |S| + 1
Input
Input is given from Standard Input in the following format:
S
T
Output
If T satisfies the property in Problem Statement, print `Yes`; otherwise, print `No`.
Examples
Input
chokudai
chokudaiz
Output
Yes
Input
snuke
snekee
Output
No
Input
a
aa
Output
Yes
Submitted Solution:
```
a, b = input(), input()
if a==b[:len(a)]:
print("Yes")
else:
print("NO")
``` | instruction | 0 | 98,412 | 18 | 196,824 |
No | output | 1 | 98,412 | 18 | 196,825 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Takahashi wants to be a member of some web service.
He tried to register himself with the ID S, which turned out to be already used by another user.
Thus, he decides to register using a string obtained by appending one character at the end of S as his ID.
He is now trying to register with the ID T. Determine whether this string satisfies the property above.
Constraints
* S and T are strings consisting of lowercase English letters.
* 1 \leq |S| \leq 10
* |T| = |S| + 1
Input
Input is given from Standard Input in the following format:
S
T
Output
If T satisfies the property in Problem Statement, print `Yes`; otherwise, print `No`.
Examples
Input
chokudai
chokudaiz
Output
Yes
Input
snuke
snekee
Output
No
Input
a
aa
Output
Yes
Submitted Solution:
```
S = input()
T = input()
if S[:-len(S)-1] == T:
print("Yes")
else:
print("No")
``` | instruction | 0 | 98,413 | 18 | 196,826 |
No | output | 1 | 98,413 | 18 | 196,827 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Takahashi wants to be a member of some web service.
He tried to register himself with the ID S, which turned out to be already used by another user.
Thus, he decides to register using a string obtained by appending one character at the end of S as his ID.
He is now trying to register with the ID T. Determine whether this string satisfies the property above.
Constraints
* S and T are strings consisting of lowercase English letters.
* 1 \leq |S| \leq 10
* |T| = |S| + 1
Input
Input is given from Standard Input in the following format:
S
T
Output
If T satisfies the property in Problem Statement, print `Yes`; otherwise, print `No`.
Examples
Input
chokudai
chokudaiz
Output
Yes
Input
snuke
snekee
Output
No
Input
a
aa
Output
Yes
Submitted Solution:
```
import re
s=input()
t=input()
if(re.search(s,t)):
print("Yes")
else:
print("No")
``` | instruction | 0 | 98,414 | 18 | 196,828 |
No | output | 1 | 98,414 | 18 | 196,829 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a string S of length 2 or 3 consisting of lowercase English letters. If the length of the string is 2, print it as is; if the length is 3, print the string after reversing it.
Constraints
* The length of S is 2 or 3.
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
If the length of S is 2, print S as is; if the length is 3, print S after reversing it.
Examples
Input
abc
Output
cba
Input
ac
Output
ac | instruction | 0 | 98,459 | 18 | 196,918 |
"Correct Solution:
```
a = input()
if(len(a)==2):
print(a)
else:
print(a[::-1])
``` | output | 1 | 98,459 | 18 | 196,919 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a string S of length 2 or 3 consisting of lowercase English letters. If the length of the string is 2, print it as is; if the length is 3, print the string after reversing it.
Constraints
* The length of S is 2 or 3.
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
If the length of S is 2, print S as is; if the length is 3, print S after reversing it.
Examples
Input
abc
Output
cba
Input
ac
Output
ac | instruction | 0 | 98,460 | 18 | 196,920 |
"Correct Solution:
```
s=input()
if len(s)==2:
print(s)
else:
s=list(reversed(s))
print(*s,sep="")
``` | output | 1 | 98,460 | 18 | 196,921 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a string S of length 2 or 3 consisting of lowercase English letters. If the length of the string is 2, print it as is; if the length is 3, print the string after reversing it.
Constraints
* The length of S is 2 or 3.
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
If the length of S is 2, print S as is; if the length is 3, print S after reversing it.
Examples
Input
abc
Output
cba
Input
ac
Output
ac | instruction | 0 | 98,461 | 18 | 196,922 |
"Correct Solution:
```
s = input()
print(s if len(s) == 2 else s[::-1])
``` | output | 1 | 98,461 | 18 | 196,923 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a string S of length 2 or 3 consisting of lowercase English letters. If the length of the string is 2, print it as is; if the length is 3, print the string after reversing it.
Constraints
* The length of S is 2 or 3.
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
If the length of S is 2, print S as is; if the length is 3, print S after reversing it.
Examples
Input
abc
Output
cba
Input
ac
Output
ac | instruction | 0 | 98,462 | 18 | 196,924 |
"Correct Solution:
```
a=input()
if len(a)==3:
print(a[2]+a[1]+a[0])
else:
print(a)
``` | output | 1 | 98,462 | 18 | 196,925 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a string S of length 2 or 3 consisting of lowercase English letters. If the length of the string is 2, print it as is; if the length is 3, print the string after reversing it.
Constraints
* The length of S is 2 or 3.
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
If the length of S is 2, print S as is; if the length is 3, print S after reversing it.
Examples
Input
abc
Output
cba
Input
ac
Output
ac | instruction | 0 | 98,463 | 18 | 196,926 |
"Correct Solution:
```
str = input()
if len(str) == 3:
str = str[::-1]
print(str)
``` | output | 1 | 98,463 | 18 | 196,927 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a string S of length 2 or 3 consisting of lowercase English letters. If the length of the string is 2, print it as is; if the length is 3, print the string after reversing it.
Constraints
* The length of S is 2 or 3.
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
If the length of S is 2, print S as is; if the length is 3, print S after reversing it.
Examples
Input
abc
Output
cba
Input
ac
Output
ac | instruction | 0 | 98,464 | 18 | 196,928 |
"Correct Solution:
```
S = list(input())
if len(S) == 3:
S = S[::-1]
print(''.join(S))
``` | output | 1 | 98,464 | 18 | 196,929 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a string S of length 2 or 3 consisting of lowercase English letters. If the length of the string is 2, print it as is; if the length is 3, print the string after reversing it.
Constraints
* The length of S is 2 or 3.
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
If the length of S is 2, print S as is; if the length is 3, print S after reversing it.
Examples
Input
abc
Output
cba
Input
ac
Output
ac | instruction | 0 | 98,465 | 18 | 196,930 |
"Correct Solution:
```
s=input()
print((s,s[::-1])[len(s)==3])
``` | output | 1 | 98,465 | 18 | 196,931 |
Provide a correct Python 3 solution for this coding contest problem.
You are given a string S of length 2 or 3 consisting of lowercase English letters. If the length of the string is 2, print it as is; if the length is 3, print the string after reversing it.
Constraints
* The length of S is 2 or 3.
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
If the length of S is 2, print S as is; if the length is 3, print S after reversing it.
Examples
Input
abc
Output
cba
Input
ac
Output
ac | instruction | 0 | 98,466 | 18 | 196,932 |
"Correct Solution:
```
s=str(input())
n=len(s)
if n==2:
print(s)
else:
print(s[::-1])
``` | output | 1 | 98,466 | 18 | 196,933 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a string S of length 2 or 3 consisting of lowercase English letters. If the length of the string is 2, print it as is; if the length is 3, print the string after reversing it.
Constraints
* The length of S is 2 or 3.
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
If the length of S is 2, print S as is; if the length is 3, print S after reversing it.
Examples
Input
abc
Output
cba
Input
ac
Output
ac
Submitted Solution:
```
l = input()
if len(l) ==3:
print(l[::-1])
else:
print(l)
``` | instruction | 0 | 98,467 | 18 | 196,934 |
Yes | output | 1 | 98,467 | 18 | 196,935 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a string S of length 2 or 3 consisting of lowercase English letters. If the length of the string is 2, print it as is; if the length is 3, print the string after reversing it.
Constraints
* The length of S is 2 or 3.
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
If the length of S is 2, print S as is; if the length is 3, print S after reversing it.
Examples
Input
abc
Output
cba
Input
ac
Output
ac
Submitted Solution:
```
s=input()
S=list(s)
if len(S)==2:
print(s)
else:
print(S[2]+S[1]+S[0])
``` | instruction | 0 | 98,468 | 18 | 196,936 |
Yes | output | 1 | 98,468 | 18 | 196,937 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a string S of length 2 or 3 consisting of lowercase English letters. If the length of the string is 2, print it as is; if the length is 3, print the string after reversing it.
Constraints
* The length of S is 2 or 3.
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
If the length of S is 2, print S as is; if the length is 3, print S after reversing it.
Examples
Input
abc
Output
cba
Input
ac
Output
ac
Submitted Solution:
```
tmp = input()
if len(tmp) == 3:
print(tmp[::-1])
else:
print(tmp)
``` | instruction | 0 | 98,469 | 18 | 196,938 |
Yes | output | 1 | 98,469 | 18 | 196,939 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a string S of length 2 or 3 consisting of lowercase English letters. If the length of the string is 2, print it as is; if the length is 3, print the string after reversing it.
Constraints
* The length of S is 2 or 3.
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
If the length of S is 2, print S as is; if the length is 3, print S after reversing it.
Examples
Input
abc
Output
cba
Input
ac
Output
ac
Submitted Solution:
```
s=input();print(s if len(s)<3 else s[::-1])
``` | instruction | 0 | 98,470 | 18 | 196,940 |
Yes | output | 1 | 98,470 | 18 | 196,941 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a string S of length 2 or 3 consisting of lowercase English letters. If the length of the string is 2, print it as is; if the length is 3, print the string after reversing it.
Constraints
* The length of S is 2 or 3.
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
If the length of S is 2, print S as is; if the length is 3, print S after reversing it.
Examples
Input
abc
Output
cba
Input
ac
Output
ac
Submitted Solution:
```
S = input()
listed_S = list[S]
if len(listed_S)==2:
print(S)
elif len(listed_S)==3:
print(S[::-1])
``` | instruction | 0 | 98,471 | 18 | 196,942 |
No | output | 1 | 98,471 | 18 | 196,943 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a string S of length 2 or 3 consisting of lowercase English letters. If the length of the string is 2, print it as is; if the length is 3, print the string after reversing it.
Constraints
* The length of S is 2 or 3.
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
If the length of S is 2, print S as is; if the length is 3, print S after reversing it.
Examples
Input
abc
Output
cba
Input
ac
Output
ac
Submitted Solution:
```
from collections import deque
n = int(input())
listx = [int(input()) for i in range(n)]
listx.sort()
listx = deque(listx)
listy = deque([])
ans=0
x=listx.popleft()
listy.appendleft(x)
x=listx.pop()
listy.append(x)
ans+=int(listy[1])-int(listy[0])
while len(listx)>=1:
abs1=abs(listx[0]-listy[-1])
abs2=abs(listx[-1]-listy[0])
if abs1 < abs2:
x=listx.pop()
listy.appendleft(x)
ans+=abs2
else:
x=listx.popleft()
listy.append(x)
ans+=abs1
if listy[0] > listy[-1]:
listy.reverse()
print(ans)
``` | instruction | 0 | 98,472 | 18 | 196,944 |
No | output | 1 | 98,472 | 18 | 196,945 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a string S of length 2 or 3 consisting of lowercase English letters. If the length of the string is 2, print it as is; if the length is 3, print the string after reversing it.
Constraints
* The length of S is 2 or 3.
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
If the length of S is 2, print S as is; if the length is 3, print S after reversing it.
Examples
Input
abc
Output
cba
Input
ac
Output
ac
Submitted Solution:
```
s = input()
if len(s) == 2:
s = s[::-1]
print(s)
``` | instruction | 0 | 98,473 | 18 | 196,946 |
No | output | 1 | 98,473 | 18 | 196,947 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given a string S of length 2 or 3 consisting of lowercase English letters. If the length of the string is 2, print it as is; if the length is 3, print the string after reversing it.
Constraints
* The length of S is 2 or 3.
* S consists of lowercase English letters.
Input
Input is given from Standard Input in the following format:
S
Output
If the length of S is 2, print S as is; if the length is 3, print S after reversing it.
Examples
Input
abc
Output
cba
Input
ac
Output
ac
Submitted Solution:
```
import sys
# ι’ζ° solve γ―οΌγγ‘γγοΌει‘γ«εΏγγ¦ζΈγζγγ
def solve(S):
x = S
if len(S) == 2:
return S
elif len(S) == 3 :
return x[2] + x[1] + x[0]
# γγγγδΈγ―οΌε
₯εγ»εΊεε½’εΌγεγγ§γγγ°οΌε€γγͺγγ¦θ―γοΌ
def readQuestion():
line = sys.stdin.readline().rstrip()
return int(line)
def main():
n = readQuestion()
answer = solve(n)
print(answer)
if __name__ == '__main__':
main()
``` | instruction | 0 | 98,474 | 18 | 196,948 |
No | output | 1 | 98,474 | 18 | 196,949 |
Provide a correct Python 3 solution for this coding contest problem.
Ringo has a string S.
He can perform the following N kinds of operations any number of times in any order.
* Operation i: For each of the characters from the L_i-th through the R_i-th characters in S, replace it with its succeeding letter in the English alphabet. (That is, replace `a` with `b`, replace `b` with `c` and so on.) For `z`, we assume that its succeeding letter is `a`.
Ringo loves palindromes and wants to turn S into a palindrome. Determine whether this is possible.
Constraints
* 1 \leq |S| \leq 10^5
* S consists of lowercase English letters.
* 1 \leq N \leq 10^5
* 1 \leq L_i \leq R_i \leq |S|
Input
Input is given from Standard Input in the following format:
S
N
L_1 R_1
L_2 R_2
:
L_N R_N
Output
Print `YES` if it is possible to turn S into a palindrome; print `NO` if it is impossible.
Examples
Input
bixzja
2
2 3
3 6
Output
YES
Input
abc
1
2 2
Output
NO
Input
cassert
4
1 2
3 4
1 1
2 2
Output
YES | instruction | 0 | 98,484 | 18 | 196,968 |
"Correct Solution:
```
import sys
from operator import sub
sys.setrecursionlimit(100000)
def dfs(s, visited):
visited.add(s)
for v in links[s]:
if v not in visited:
dfs(v, visited)
def solve():
checked = set()
for i in range(ls // 2 + 1):
if i in checked:
continue
visited = set()
dfs(i, visited)
inner_total = sum(sd[k] for k in visited) % 26
if inner_total != 0:
return False
checked.update(visited)
return True
s = input()
sl = list(map(ord, s))
sd = list(map(sub, sl + [97], [97] + sl))
ls = len(s)
lsd = len(sd)
n = int(input())
links = [set() for _ in range(lsd)]
for i in range((ls + 1) // 2):
links[i].add(ls - i)
links[ls - i].add(i)
for a, b in (map(int, input().split()) for _ in range(n)):
links[a - 1].add(b)
links[b].add(a - 1)
print('YES' if solve() else 'NO')
``` | output | 1 | 98,484 | 18 | 196,969 |
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 β€ | S | β€ 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 | 98,554 | 18 | 197,108 |
"Correct Solution:
```
s,a,c=list(input()),1,0
for x in s:
if x=='A' and a:a=0
elif x=='Z' and not a:a,c=1,c+1
print('AZ'*c if c else -1)
``` | output | 1 | 98,554 | 18 | 197,109 |
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 β€ | S | β€ 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 | 98,555 | 18 | 197,110 |
"Correct Solution:
```
s,a,c=input(),1,0
for x in s:
if x=='A':a=0
elif x=='Z' and not a:a,c=1,c+1
print('AZ'*c if c else -1)
``` | output | 1 | 98,555 | 18 | 197,111 |
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 β€ | S | β€ 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 | 98,556 | 18 | 197,112 |
"Correct Solution:
```
s,a,c=input(),1,0
for x in s:
if x=='A' and a:a=0
elif x=='Z' and not a:a,c=1,c+1
print('AZ'*c if c else -1)
``` | output | 1 | 98,556 | 18 | 197,113 |
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 β€ | S | β€ 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 | 98,557 | 18 | 197,114 |
"Correct Solution:
```
s = input()
ans = ""
flag = False
for c in s:
if c == "A" and not flag:flag = True
if c == "Z" and flag:
ans += "AZ"
flag = False
if ans == "":
print(-1)
else:
print(ans)
``` | output | 1 | 98,557 | 18 | 197,115 |
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