message stringlengths 2 433k | message_type stringclasses 2
values | message_id int64 0 1 | conversation_id int64 113 108k | cluster float64 12 12 | __index_level_0__ int64 226 217k |
|---|---|---|---|---|---|
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Anton loves transforming one permutation into another one by swapping elements for money, and Ira doesn't like paying for stupid games. Help them obtain the required permutation by paying as lit... | instruction | 0 | 68,567 | 12 | 137,134 |
No | output | 1 | 68,567 | 12 | 137,135 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Anton loves transforming one permutation into another one by swapping elements for money, and Ira doesn't like paying for stupid games. Help them obtain the required permutation by paying as lit... | instruction | 0 | 68,568 | 12 | 137,136 |
No | output | 1 | 68,568 | 12 | 137,137 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Anton loves transforming one permutation into another one by swapping elements for money, and Ira doesn't like paying for stupid games. Help them obtain the required permutation by paying as lit... | instruction | 0 | 68,569 | 12 | 137,138 |
No | output | 1 | 68,569 | 12 | 137,139 |
Provide a correct Python 3 solution for this coding contest problem.
We have a sequence p = {p_1,\ p_2,\ ...,\ p_N} which is a permutation of {1,\ 2,\ ...,\ N}.
You can perform the following operation at most once: choose integers i and j (1 \leq i < j \leq N), and swap p_i and p_j. Note that you can also choose not ... | instruction | 0 | 68,729 | 12 | 137,458 |
"Correct Solution:
```
N=int(input())
P=list(map(int,input().split()))
cnt=0
for n in range(N):
if (n+1)!=P[n]:
cnt+=1
if cnt<=2:
print("YES")
else:
print("NO")
``` | output | 1 | 68,729 | 12 | 137,459 |
Provide a correct Python 3 solution for this coding contest problem.
We have a sequence p = {p_1,\ p_2,\ ...,\ p_N} which is a permutation of {1,\ 2,\ ...,\ N}.
You can perform the following operation at most once: choose integers i and j (1 \leq i < j \leq N), and swap p_i and p_j. Note that you can also choose not ... | instruction | 0 | 68,730 | 12 | 137,460 |
"Correct Solution:
```
n=int(input())
p=list(map(int,input().split()))
q=sorted(p)
cnt=0
for i in range(n):
if p[i]!=q[i]:
cnt+=1
if cnt<=2:
print("YES")
else:
print("NO")
``` | output | 1 | 68,730 | 12 | 137,461 |
Provide a correct Python 3 solution for this coding contest problem.
We have a sequence p = {p_1,\ p_2,\ ...,\ p_N} which is a permutation of {1,\ 2,\ ...,\ N}.
You can perform the following operation at most once: choose integers i and j (1 \leq i < j \leq N), and swap p_i and p_j. Note that you can also choose not ... | instruction | 0 | 68,731 | 12 | 137,462 |
"Correct Solution:
```
N=int(input())
p=list(map(int,input().split()))
count=0
for i in range(N):
if p[i]!=i+1:
count+=1
print("YES" if count<=2 else "NO")
``` | output | 1 | 68,731 | 12 | 137,463 |
Provide a correct Python 3 solution for this coding contest problem.
We have a sequence p = {p_1,\ p_2,\ ...,\ p_N} which is a permutation of {1,\ 2,\ ...,\ N}.
You can perform the following operation at most once: choose integers i and j (1 \leq i < j \leq N), and swap p_i and p_j. Note that you can also choose not ... | instruction | 0 | 68,732 | 12 | 137,464 |
"Correct Solution:
```
N=int(input())
p=list(map(int,input().split()))
cnt=0
for i in range(N):
if p[i]!=i+1:
cnt=cnt+1
print("YES" if cnt<=2 else "NO")
``` | output | 1 | 68,732 | 12 | 137,465 |
Provide a correct Python 3 solution for this coding contest problem.
We have a sequence p = {p_1,\ p_2,\ ...,\ p_N} which is a permutation of {1,\ 2,\ ...,\ N}.
You can perform the following operation at most once: choose integers i and j (1 \leq i < j \leq N), and swap p_i and p_j. Note that you can also choose not ... | instruction | 0 | 68,733 | 12 | 137,466 |
"Correct Solution:
```
n=int(input())
p=list(map(int,input().split()))
c=0
for i in range(n):
if p[i]!=i+1:
c+=1
print('YES' if c<3 else 'NO')
``` | output | 1 | 68,733 | 12 | 137,467 |
Provide a correct Python 3 solution for this coding contest problem.
We have a sequence p = {p_1,\ p_2,\ ...,\ p_N} which is a permutation of {1,\ 2,\ ...,\ N}.
You can perform the following operation at most once: choose integers i and j (1 \leq i < j \leq N), and swap p_i and p_j. Note that you can also choose not ... | instruction | 0 | 68,734 | 12 | 137,468 |
"Correct Solution:
```
N=int(input())
n=list(map(int,input().split()))
count=0
for i in range(N):
count+=(n[i]!=i+1)
print(("YES","NO")[count>2])
``` | output | 1 | 68,734 | 12 | 137,469 |
Provide a correct Python 3 solution for this coding contest problem.
We have a sequence p = {p_1,\ p_2,\ ...,\ p_N} which is a permutation of {1,\ 2,\ ...,\ N}.
You can perform the following operation at most once: choose integers i and j (1 \leq i < j \leq N), and swap p_i and p_j. Note that you can also choose not ... | instruction | 0 | 68,735 | 12 | 137,470 |
"Correct Solution:
```
n = int(input())
p = list(map(int,input().split()))
cnt = 0
for i in range(1,n+1):
if p[i-1]!=i:
cnt += 1
print('YES' if cnt<=2 else 'NO')
``` | output | 1 | 68,735 | 12 | 137,471 |
Provide a correct Python 3 solution for this coding contest problem.
We have a sequence p = {p_1,\ p_2,\ ...,\ p_N} which is a permutation of {1,\ 2,\ ...,\ N}.
You can perform the following operation at most once: choose integers i and j (1 \leq i < j \leq N), and swap p_i and p_j. Note that you can also choose not ... | instruction | 0 | 68,736 | 12 | 137,472 |
"Correct Solution:
```
n = int(input())
p = map(int, input().split())
judge = [(v != k+1) for k, v in enumerate(p)]
if sum(judge) <= 2:
print('YES')
else:
print('NO')
``` | output | 1 | 68,736 | 12 | 137,473 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a sequence p = {p_1,\ p_2,\ ...,\ p_N} which is a permutation of {1,\ 2,\ ...,\ N}.
You can perform the following operation at most once: choose integers i and j (1 \leq i < j \leq N), ... | instruction | 0 | 68,737 | 12 | 137,474 |
Yes | output | 1 | 68,737 | 12 | 137,475 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a sequence p = {p_1,\ p_2,\ ...,\ p_N} which is a permutation of {1,\ 2,\ ...,\ N}.
You can perform the following operation at most once: choose integers i and j (1 \leq i < j \leq N), ... | instruction | 0 | 68,738 | 12 | 137,476 |
Yes | output | 1 | 68,738 | 12 | 137,477 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a sequence p = {p_1,\ p_2,\ ...,\ p_N} which is a permutation of {1,\ 2,\ ...,\ N}.
You can perform the following operation at most once: choose integers i and j (1 \leq i < j \leq N), ... | instruction | 0 | 68,739 | 12 | 137,478 |
Yes | output | 1 | 68,739 | 12 | 137,479 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a sequence p = {p_1,\ p_2,\ ...,\ p_N} which is a permutation of {1,\ 2,\ ...,\ N}.
You can perform the following operation at most once: choose integers i and j (1 \leq i < j \leq N), ... | instruction | 0 | 68,740 | 12 | 137,480 |
Yes | output | 1 | 68,740 | 12 | 137,481 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a sequence p = {p_1,\ p_2,\ ...,\ p_N} which is a permutation of {1,\ 2,\ ...,\ N}.
You can perform the following operation at most once: choose integers i and j (1 \leq i < j \leq N), ... | instruction | 0 | 68,741 | 12 | 137,482 |
No | output | 1 | 68,741 | 12 | 137,483 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a sequence p = {p_1,\ p_2,\ ...,\ p_N} which is a permutation of {1,\ 2,\ ...,\ N}.
You can perform the following operation at most once: choose integers i and j (1 \leq i < j \leq N), ... | instruction | 0 | 68,742 | 12 | 137,484 |
No | output | 1 | 68,742 | 12 | 137,485 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a sequence p = {p_1,\ p_2,\ ...,\ p_N} which is a permutation of {1,\ 2,\ ...,\ N}.
You can perform the following operation at most once: choose integers i and j (1 \leq i < j \leq N), ... | instruction | 0 | 68,743 | 12 | 137,486 |
No | output | 1 | 68,743 | 12 | 137,487 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a sequence p = {p_1,\ p_2,\ ...,\ p_N} which is a permutation of {1,\ 2,\ ...,\ N}.
You can perform the following operation at most once: choose integers i and j (1 \leq i < j \leq N), ... | instruction | 0 | 68,744 | 12 | 137,488 |
No | output | 1 | 68,744 | 12 | 137,489 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a consisting of n integers, and q queries to it. i-th query is denoted by two integers l_i and r_i. For each query, you have to find any integer that occurs exactly once i... | instruction | 0 | 68,910 | 12 | 137,820 |
No | output | 1 | 68,910 | 12 | 137,821 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a consisting of n integers, and q queries to it. i-th query is denoted by two integers l_i and r_i. For each query, you have to find any integer that occurs exactly once i... | instruction | 0 | 68,911 | 12 | 137,822 |
No | output | 1 | 68,911 | 12 | 137,823 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a consisting of n integers, and q queries to it. i-th query is denoted by two integers l_i and r_i. For each query, you have to find any integer that occurs exactly once i... | instruction | 0 | 68,912 | 12 | 137,824 |
No | output | 1 | 68,912 | 12 | 137,825 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a consisting of n integers, and q queries to it. i-th query is denoted by two integers l_i and r_i. For each query, you have to find any integer that occurs exactly once i... | instruction | 0 | 68,913 | 12 | 137,826 |
No | output | 1 | 68,913 | 12 | 137,827 |
Provide tags and a correct Python 3 solution for this coding contest problem.
After the mysterious disappearance of Ashish, his two favourite disciples Ishika and Hriday, were each left with one half of a secret message. These messages can each be represented by a permutation of size n. Let's call them a and b.
Note ... | instruction | 0 | 69,104 | 12 | 138,208 |
Tags: constructive algorithms, data structures, greedy, implementation
Correct Solution:
```
#BECAUSE ONE TRUTH PREVAILS
import sys
def arr():
return list(map(int,input().split()))
input=sys.stdin.readline
from collections import defaultdict
import math
N=int(input())
L1=arr()
L2=arr()
Hash=defaultdict(lambda:0)
fo... | output | 1 | 69,104 | 12 | 138,209 |
Provide tags and a correct Python 3 solution for this coding contest problem.
After the mysterious disappearance of Ashish, his two favourite disciples Ishika and Hriday, were each left with one half of a secret message. These messages can each be represented by a permutation of size n. Let's call them a and b.
Note ... | instruction | 0 | 69,105 | 12 | 138,210 |
Tags: constructive algorithms, data structures, greedy, implementation
Correct Solution:
```
n = int(input())
a_trans = [0] * (n + 1)
for i, ai in enumerate(input().split()):
a_trans[int(ai)] = i
matches = [0] * n
for i, bi in enumerate(input().split()):
matches[(i - a_trans[int(bi)]) % n] += 1
print(max(matche... | output | 1 | 69,105 | 12 | 138,211 |
Provide tags and a correct Python 3 solution for this coding contest problem.
After the mysterious disappearance of Ashish, his two favourite disciples Ishika and Hriday, were each left with one half of a secret message. These messages can each be represented by a permutation of size n. Let's call them a and b.
Note ... | instruction | 0 | 69,106 | 12 | 138,212 |
Tags: constructive algorithms, data structures, greedy, implementation
Correct Solution:
```
n = int(input())
first = {key: value for key, value in zip(map(int, input().split()), range(n))}
second = list(map(int, input().split()))
values = {}
for i in range(n):
p = second[i]
value_right = f"{abs(n - abs(i - fi... | output | 1 | 69,106 | 12 | 138,213 |
Provide tags and a correct Python 3 solution for this coding contest problem.
After the mysterious disappearance of Ashish, his two favourite disciples Ishika and Hriday, were each left with one half of a secret message. These messages can each be represented by a permutation of size n. Let's call them a and b.
Note ... | instruction | 0 | 69,107 | 12 | 138,214 |
Tags: constructive algorithms, data structures, greedy, implementation
Correct Solution:
```
n = int(input())
a = list(map(int, input().split()))
b = list(map(int, input().split()))
inda = {}
for i in range(n):
inda[a[i]] = i
indb = {}
for i in range(n):
indb[b[i]] = i
shift = [0]*n
for i in range(n):
if a... | output | 1 | 69,107 | 12 | 138,215 |
Provide tags and a correct Python 3 solution for this coding contest problem.
After the mysterious disappearance of Ashish, his two favourite disciples Ishika and Hriday, were each left with one half of a secret message. These messages can each be represented by a permutation of size n. Let's call them a and b.
Note ... | instruction | 0 | 69,108 | 12 | 138,216 |
Tags: constructive algorithms, data structures, greedy, implementation
Correct Solution:
```
n=int(input())
a=list(map(int,input().split()))
b=list(map(int,input().split()))
count=[0]*(n+1)
d={}
for i in range(n):
d[b[i]]=i+1
for i in range(1,n+1):
count[(n-d[a[i-1]]+i)%n]+=1
print(max(count))
``` | output | 1 | 69,108 | 12 | 138,217 |
Provide tags and a correct Python 3 solution for this coding contest problem.
After the mysterious disappearance of Ashish, his two favourite disciples Ishika and Hriday, were each left with one half of a secret message. These messages can each be represented by a permutation of size n. Let's call them a and b.
Note ... | instruction | 0 | 69,109 | 12 | 138,218 |
Tags: constructive algorithms, data structures, greedy, implementation
Correct Solution:
```
def answer(n,A,B):
dp1=[0]*(n+1)
dp2=[0]*(n+1)
for i in range(n):
dp1[A[i]]=i
dp2[B[i]]=i
d=[0]*(n)
for i in range(1,n+1):
if dp1[i]-dp2[i]>=0:
d[dp1[i]-dp2[i]]+=1
... | output | 1 | 69,109 | 12 | 138,219 |
Provide tags and a correct Python 3 solution for this coding contest problem.
After the mysterious disappearance of Ashish, his two favourite disciples Ishika and Hriday, were each left with one half of a secret message. These messages can each be represented by a permutation of size n. Let's call them a and b.
Note ... | instruction | 0 | 69,110 | 12 | 138,220 |
Tags: constructive algorithms, data structures, greedy, implementation
Correct Solution:
```
# -*- coding: utf-8 -*-
"""
Created on Fri Jun 5 16:06:35 2020
@author: Mridul Garg
"""
#q = int(input())
#for _ in range(q):
n = int(input())
A = list(map(int, input().split(" ")))
B = list(map(int, input().split(" ")))
di... | output | 1 | 69,110 | 12 | 138,221 |
Provide tags and a correct Python 3 solution for this coding contest problem.
After the mysterious disappearance of Ashish, his two favourite disciples Ishika and Hriday, were each left with one half of a secret message. These messages can each be represented by a permutation of size n. Let's call them a and b.
Note ... | instruction | 0 | 69,111 | 12 | 138,222 |
Tags: constructive algorithms, data structures, greedy, implementation
Correct Solution:
```
#https://codeforces.com/problemset/problem/1365/C
n = int(input())
a = list(map(int,input().split()))
b = list(map(int,input().split()))
shifts = {}
ans = 1
alpha = {}
for i in range(n):
alpha[b[i]]=[i]
for i in range(n):
... | output | 1 | 69,111 | 12 | 138,223 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
After the mysterious disappearance of Ashish, his two favourite disciples Ishika and Hriday, were each left with one half of a secret message. These messages can each be represented by a permuta... | instruction | 0 | 69,112 | 12 | 138,224 |
Yes | output | 1 | 69,112 | 12 | 138,225 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
After the mysterious disappearance of Ashish, his two favourite disciples Ishika and Hriday, were each left with one half of a secret message. These messages can each be represented by a permuta... | instruction | 0 | 69,113 | 12 | 138,226 |
Yes | output | 1 | 69,113 | 12 | 138,227 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
After the mysterious disappearance of Ashish, his two favourite disciples Ishika and Hriday, were each left with one half of a secret message. These messages can each be represented by a permuta... | instruction | 0 | 69,114 | 12 | 138,228 |
Yes | output | 1 | 69,114 | 12 | 138,229 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
After the mysterious disappearance of Ashish, his two favourite disciples Ishika and Hriday, were each left with one half of a secret message. These messages can each be represented by a permuta... | instruction | 0 | 69,115 | 12 | 138,230 |
Yes | output | 1 | 69,115 | 12 | 138,231 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
After the mysterious disappearance of Ashish, his two favourite disciples Ishika and Hriday, were each left with one half of a secret message. These messages can each be represented by a permuta... | instruction | 0 | 69,116 | 12 | 138,232 |
No | output | 1 | 69,116 | 12 | 138,233 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
After the mysterious disappearance of Ashish, his two favourite disciples Ishika and Hriday, were each left with one half of a secret message. These messages can each be represented by a permuta... | instruction | 0 | 69,117 | 12 | 138,234 |
No | output | 1 | 69,117 | 12 | 138,235 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
After the mysterious disappearance of Ashish, his two favourite disciples Ishika and Hriday, were each left with one half of a secret message. These messages can each be represented by a permuta... | instruction | 0 | 69,118 | 12 | 138,236 |
No | output | 1 | 69,118 | 12 | 138,237 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
After the mysterious disappearance of Ashish, his two favourite disciples Ishika and Hriday, were each left with one half of a secret message. These messages can each be represented by a permuta... | instruction | 0 | 69,119 | 12 | 138,238 |
No | output | 1 | 69,119 | 12 | 138,239 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a consisting of n integers. You have to find the length of the smallest (shortest) prefix of elements you need to erase from a to make it a good array. Recall that the prefix of the array a=[a_1, a_2, ..., a_n] is a su... | instruction | 0 | 69,120 | 12 | 138,240 |
Tags: greedy
Correct Solution:
```
for _ in range(int(input())):
i_liczb = int(input())
liczby = [0] + [int(x) for x in input().split()]
poz = i_liczb
while poz > 1 and liczby[poz - 1] >= liczby[poz]:
poz -= 1
while poz > 1 and liczby[poz - 1] <= liczby[poz]:
poz -= 1
print(poz -... | output | 1 | 69,120 | 12 | 138,241 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a consisting of n integers. You have to find the length of the smallest (shortest) prefix of elements you need to erase from a to make it a good array. Recall that the prefix of the array a=[a_1, a_2, ..., a_n] is a su... | instruction | 0 | 69,121 | 12 | 138,242 |
Tags: greedy
Correct Solution:
```
for _ in range(int(input())):
n=int(input())
a=list(map(int,input().split()))
back=n-1
while(back>0 and a[back-1]>=a[back]):
back-=1
while(back>0 and a[back-1]<=a[back]):
back-=1
print(back)
``` | output | 1 | 69,121 | 12 | 138,243 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a consisting of n integers. You have to find the length of the smallest (shortest) prefix of elements you need to erase from a to make it a good array. Recall that the prefix of the array a=[a_1, a_2, ..., a_n] is a su... | instruction | 0 | 69,122 | 12 | 138,244 |
Tags: greedy
Correct Solution:
```
def answer(n,A):
count=1
flag=0
for i in range(n-1,0,-1):
if A[i]-A[i-1]<=0 and flag==0:
count+=1
elif A[i]-A[i-1]>=0:
flag=1
count+=1
else:
break
return n-count
t... | output | 1 | 69,122 | 12 | 138,245 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a consisting of n integers. You have to find the length of the smallest (shortest) prefix of elements you need to erase from a to make it a good array. Recall that the prefix of the array a=[a_1, a_2, ..., a_n] is a su... | instruction | 0 | 69,123 | 12 | 138,246 |
Tags: greedy
Correct Solution:
```
for _ in range(int(input())):
n = int(input())
a = [int(i) for i in input().split()]
ind = 0
bad_elements = 0
state = 0
border = 0
seq = 0
while ind < n:
if state == 0:
# print('state =', state, 'ind =', ind, 'a[ind] =', a[ind])
... | output | 1 | 69,123 | 12 | 138,247 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a consisting of n integers. You have to find the length of the smallest (shortest) prefix of elements you need to erase from a to make it a good array. Recall that the prefix of the array a=[a_1, a_2, ..., a_n] is a su... | instruction | 0 | 69,124 | 12 | 138,248 |
Tags: greedy
Correct Solution:
```
# @author --> ajaymodi
# Naive approach
import sys
# sys.stdin=open("input.in","r")
# sys.stdout=open("output.out","w")
input=lambda : sys.stdin.readline().strip()
char = [chr(i) for i in range(97,123)]
CHAR = [chr(i) for i in range(65,91)]
mp = lambda:list(map(int,input().split()))
... | output | 1 | 69,124 | 12 | 138,249 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a consisting of n integers. You have to find the length of the smallest (shortest) prefix of elements you need to erase from a to make it a good array. Recall that the prefix of the array a=[a_1, a_2, ..., a_n] is a su... | instruction | 0 | 69,125 | 12 | 138,250 |
Tags: greedy
Correct Solution:
```
import math
t = int(input())
for _ in range(t):
n = int(input())
a = list(map(int, input().split()))
pos = n - 1
while pos > 0 and a[pos - 1] >= a[pos]:
pos -= 1
while pos > 0 and a[pos - 1] <= a[pos]:
pos -= 1
print(pos)
``` | output | 1 | 69,125 | 12 | 138,251 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a consisting of n integers. You have to find the length of the smallest (shortest) prefix of elements you need to erase from a to make it a good array. Recall that the prefix of the array a=[a_1, a_2, ..., a_n] is a su... | instruction | 0 | 69,126 | 12 | 138,252 |
Tags: greedy
Correct Solution:
```
for t in range(int(input())):
n = int(input())
a = list(map(int,input().split()))
pos = n-1
while pos>0 and a[pos]<=a[pos-1]:pos-=1
while pos>0 and a[pos]>=a[pos-1]:pos-=1
print(pos)
``` | output | 1 | 69,126 | 12 | 138,253 |
Provide tags and a correct Python 3 solution for this coding contest problem.
You are given an array a consisting of n integers. You have to find the length of the smallest (shortest) prefix of elements you need to erase from a to make it a good array. Recall that the prefix of the array a=[a_1, a_2, ..., a_n] is a su... | instruction | 0 | 69,127 | 12 | 138,254 |
Tags: greedy
Correct Solution:
```
t = int(input())
def solve(arr):
n = len(arr)
x = sorted(arr)
if arr == x or arr == x[::-1] or n == 1:
return 0
arr = arr[::-1]
i = 0
while i < n-1 and arr[i+1]>=arr[i]:
i += 1
ans1 = i
i = 0
while i < n-1 and arr[i+... | output | 1 | 69,127 | 12 | 138,255 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a consisting of n integers. You have to find the length of the smallest (shortest) prefix of elements you need to erase from a to make it a good array. Recall that the pre... | instruction | 0 | 69,128 | 12 | 138,256 |
Yes | output | 1 | 69,128 | 12 | 138,257 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a consisting of n integers. You have to find the length of the smallest (shortest) prefix of elements you need to erase from a to make it a good array. Recall that the pre... | instruction | 0 | 69,129 | 12 | 138,258 |
Yes | output | 1 | 69,129 | 12 | 138,259 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
You are given an array a consisting of n integers. You have to find the length of the smallest (shortest) prefix of elements you need to erase from a to make it a good array. Recall that the pre... | instruction | 0 | 69,130 | 12 | 138,260 |
Yes | output | 1 | 69,130 | 12 | 138,261 |
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