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.
Initially, you have the array a consisting of one element 1 (a = [1]).
In one move, you can do one of the following things:
* Increase some (single) element of a by 1 (choose some i from 1 t... | instruction | 0 | 30,280 | 12 | 60,560 |
No | output | 1 | 30,280 | 12 | 60,561 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The Little Elephant has two permutations a and b of length n, consisting of numbers from 1 to n, inclusive. Let's denote the i-th (1 ≤ i ≤ n) element of the permutation a as ai, the j-th (1 ≤ j ... | instruction | 0 | 30,369 | 12 | 60,738 |
No | output | 1 | 30,369 | 12 | 60,739 |
Provide tags and a correct Python 3 solution for this coding contest problem.
George is a cat, so he really likes to play. Most of all he likes to play with his array of positive integers b. During the game, George modifies the array by using special changes. Let's mark George's current array as b1, b2, ..., b|b| (rec... | instruction | 0 | 30,414 | 12 | 60,828 |
Tags: greedy, implementation
Correct Solution:
```
a = input()
i = 0; ans = 1
while i < len(a):
i += 1
c = i-1
while i < len(a) and a[i] == '0':
i += 1
if (c > i-c) or (c == i-c and a[:c] >= a[c:i]):
ans += 1
else:
ans = 1
print(ans)
``` | output | 1 | 30,414 | 12 | 60,829 |
Provide tags and a correct Python 3 solution for this coding contest problem.
George is a cat, so he really likes to play. Most of all he likes to play with his array of positive integers b. During the game, George modifies the array by using special changes. Let's mark George's current array as b1, b2, ..., b|b| (rec... | instruction | 0 | 30,415 | 12 | 60,830 |
Tags: greedy, implementation
Correct Solution:
```
a = input()
i = 0
ans = 1
c = 0
while i < len(a):
i += 1
c = i - 1
while i < len(a) and a[i]=='0':
i += 1
if c > i - c:
ans += 1
elif c == i - c:
if a[:c] >= a[c:i]:
ans += 1
else:
ans = 1
... | output | 1 | 30,415 | 12 | 60,831 |
Provide tags and a correct Python 3 solution for this coding contest problem.
George is a cat, so he really likes to play. Most of all he likes to play with his array of positive integers b. During the game, George modifies the array by using special changes. Let's mark George's current array as b1, b2, ..., b|b| (rec... | instruction | 0 | 30,416 | 12 | 60,832 |
Tags: greedy, implementation
Correct Solution:
```
def gte(x, y):
if len(x)>len(y): return True
if len(x)==len(y): return x>=y
return False
x = input()
r = 0
l = len(x)-1
while True:
if l==0 or not gte(x[:l], x[l:]): break
if x[l] == '0':
l-=1
continue
x = x[:l]
r+=1
l-=... | output | 1 | 30,416 | 12 | 60,833 |
Provide tags and a correct Python 3 solution for this coding contest problem.
George is a cat, so he really likes to play. Most of all he likes to play with his array of positive integers b. During the game, George modifies the array by using special changes. Let's mark George's current array as b1, b2, ..., b|b| (rec... | instruction | 0 | 30,417 | 12 | 60,834 |
Tags: greedy, implementation
Correct Solution:
```
def compare(a,b):
fl = True
if len(a) > len(b):
return True
elif len(a) < len(b):
return False
elif len(a) == len(b):
fl = None
for i in range(len(a)):
if int(b[i]) > int(a[i]) and fl == None:
... | output | 1 | 30,417 | 12 | 60,835 |
Provide tags and a correct Python 3 solution for this coding contest problem.
George is a cat, so he really likes to play. Most of all he likes to play with his array of positive integers b. During the game, George modifies the array by using special changes. Let's mark George's current array as b1, b2, ..., b|b| (rec... | instruction | 0 | 30,418 | 12 | 60,836 |
Tags: greedy, implementation
Correct Solution:
```
s = input()
r = len(s)
c = 1
for i in range(len(s)-1, 0, -1):
if s[i] != '0':
if i > r-i:
c += 1
r = i
elif i == r-i:
if s[:i] >= s[i:r]:
c += 1
r = i
else:
bre... | output | 1 | 30,418 | 12 | 60,837 |
Provide tags and a correct Python 3 solution for this coding contest problem.
George is a cat, so he really likes to play. Most of all he likes to play with his array of positive integers b. During the game, George modifies the array by using special changes. Let's mark George's current array as b1, b2, ..., b|b| (rec... | instruction | 0 | 30,419 | 12 | 60,838 |
Tags: greedy, implementation
Correct Solution:
```
s = input()+'#'
if len(s)==2:
print(1)
exit()
elif '0' not in s:
if int(s[0])<int(s[1]):
print(len(s)-2)
else:
print(len(s)-1)
else:
c=0;ind=-1;ans=0
zer = s.count('0')
for i in range(len(s)):
if s[i]=='0':
... | output | 1 | 30,419 | 12 | 60,839 |
Provide tags and a correct Python 3 solution for this coding contest problem.
George is a cat, so he really likes to play. Most of all he likes to play with his array of positive integers b. During the game, George modifies the array by using special changes. Let's mark George's current array as b1, b2, ..., b|b| (rec... | instruction | 0 | 30,420 | 12 | 60,840 |
Tags: greedy, implementation
Correct Solution:
```
import sys
from math import *
from collections import *
readints=lambda:map(int, input().strip('\n').split())
s = input()
n = len(s)
arr = deque()
i=n-1
while i>=0:
j=i
while j>=0 and s[j]=='0': j-=1
arr.appendleft(((j,i), 1))
i=j-1
#print(arr)
def... | output | 1 | 30,420 | 12 | 60,841 |
Provide tags and a correct Python 3 solution for this coding contest problem.
George is a cat, so he really likes to play. Most of all he likes to play with his array of positive integers b. During the game, George modifies the array by using special changes. Let's mark George's current array as b1, b2, ..., b|b| (rec... | instruction | 0 | 30,421 | 12 | 60,842 |
Tags: greedy, implementation
Correct Solution:
```
p = input().strip()
n = len(p)
j = n - 1
ans = 0
while(j >= 0):
k = j
while p[k] == '0':
k -= 1
ln = j - k + 1
if ln > k:
ans += 1
j = -1
elif ln == k:
if (p[0] >= p[k]):
j = k - 1
else:
... | output | 1 | 30,421 | 12 | 60,843 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
George is a cat, so he really likes to play. Most of all he likes to play with his array of positive integers b. During the game, George modifies the array by using special changes. Let's mark G... | instruction | 0 | 30,422 | 12 | 60,844 |
Yes | output | 1 | 30,422 | 12 | 60,845 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
George is a cat, so he really likes to play. Most of all he likes to play with his array of positive integers b. During the game, George modifies the array by using special changes. Let's mark G... | instruction | 0 | 30,423 | 12 | 60,846 |
Yes | output | 1 | 30,423 | 12 | 60,847 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
George is a cat, so he really likes to play. Most of all he likes to play with his array of positive integers b. During the game, George modifies the array by using special changes. Let's mark G... | instruction | 0 | 30,424 | 12 | 60,848 |
Yes | output | 1 | 30,424 | 12 | 60,849 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
George is a cat, so he really likes to play. Most of all he likes to play with his array of positive integers b. During the game, George modifies the array by using special changes. Let's mark G... | instruction | 0 | 30,425 | 12 | 60,850 |
Yes | output | 1 | 30,425 | 12 | 60,851 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
George is a cat, so he really likes to play. Most of all he likes to play with his array of positive integers b. During the game, George modifies the array by using special changes. Let's mark G... | instruction | 0 | 30,426 | 12 | 60,852 |
No | output | 1 | 30,426 | 12 | 60,853 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
George is a cat, so he really likes to play. Most of all he likes to play with his array of positive integers b. During the game, George modifies the array by using special changes. Let's mark G... | instruction | 0 | 30,427 | 12 | 60,854 |
No | output | 1 | 30,427 | 12 | 60,855 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
George is a cat, so he really likes to play. Most of all he likes to play with his array of positive integers b. During the game, George modifies the array by using special changes. Let's mark G... | instruction | 0 | 30,428 | 12 | 60,856 |
No | output | 1 | 30,428 | 12 | 60,857 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
George is a cat, so he really likes to play. Most of all he likes to play with his array of positive integers b. During the game, George modifies the array by using special changes. Let's mark G... | instruction | 0 | 30,429 | 12 | 60,858 |
No | output | 1 | 30,429 | 12 | 60,859 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let's define the sum of two permutations p and q of numbers 0, 1, ..., (n - 1) as permutation <image>, where Perm(x) is the x-th lexicographically permutation of numbers 0, 1, ..., (n - 1) (counting from zero), and Ord(p) is the number of pe... | instruction | 0 | 30,478 | 12 | 60,956 |
Tags: data structures
Correct Solution:
```
import sys
class SegmTree():
def __init__(self, array=None):
size = len(array)
N = 1
while N < size:
N <<= 1
self.N = N
self.tree = [0] * (2*self.N)
for i in range(size):
self.tree[i+self.N] = array[... | output | 1 | 30,478 | 12 | 60,957 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let's define the sum of two permutations p and q of numbers 0, 1, ..., (n - 1) as permutation <image>, where Perm(x) is the x-th lexicographically permutation of numbers 0, 1, ..., (n - 1) (counting from zero), and Ord(p) is the number of pe... | instruction | 0 | 30,479 | 12 | 60,958 |
Tags: data structures
Correct Solution:
```
def sum(BIT, i):
s = 0
while i > 0:
s += BIT[i]
i -= i & (-i)
return s
def update(BIT, i, v):
while i < len(BIT):
BIT[i] += v
i += i & (-i)
def find(fen, k):
curr = 0
ans = 0
prevsum = 0
for i in range(19, -... | output | 1 | 30,479 | 12 | 60,959 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let's define the sum of two permutations p and q of numbers 0, 1, ..., (n - 1) as permutation <image>, where Perm(x) is the x-th lexicographically permutation of numbers 0, 1, ..., (n - 1) (counting from zero), and Ord(p) is the number of pe... | instruction | 0 | 30,480 | 12 | 60,960 |
Tags: data structures
Correct Solution:
```
import sys
class SegmTree():
def __init__(self, array=None):
size = len(array)
N = 1
while N < size:
N <<= 1
self.N = N
self.tree = [0] * (2*self.N)
for i in range(size):
self.tree[i+self.N] = array... | output | 1 | 30,480 | 12 | 60,961 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's define the sum of two permutations p and q of numbers 0, 1, ..., (n - 1) as permutation <image>, where Perm(x) is the x-th lexicographically permutation of numbers 0, 1, ..., (n - 1) (coun... | instruction | 0 | 30,481 | 12 | 60,962 |
No | output | 1 | 30,481 | 12 | 60,963 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's define the sum of two permutations p and q of numbers 0, 1, ..., (n - 1) as permutation <image>, where Perm(x) is the x-th lexicographically permutation of numbers 0, 1, ..., (n - 1) (coun... | instruction | 0 | 30,482 | 12 | 60,964 |
No | output | 1 | 30,482 | 12 | 60,965 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's define the sum of two permutations p and q of numbers 0, 1, ..., (n - 1) as permutation <image>, where Perm(x) is the x-th lexicographically permutation of numbers 0, 1, ..., (n - 1) (coun... | instruction | 0 | 30,483 | 12 | 60,966 |
No | output | 1 | 30,483 | 12 | 60,967 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's define the sum of two permutations p and q of numbers 0, 1, ..., (n - 1) as permutation <image>, where Perm(x) is the x-th lexicographically permutation of numbers 0, 1, ..., (n - 1) (coun... | instruction | 0 | 30,484 | 12 | 60,968 |
No | output | 1 | 30,484 | 12 | 60,969 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Dima is a beginner programmer. During his working process, he regularly has to repeat the following operation again and again: to remove every second element from the array. One day he has been bored with easy solutions of this problem, and ... | instruction | 0 | 30,665 | 12 | 61,330 |
Tags: constructive algorithms, math
Correct Solution:
```
import sys
[n, q] = map(int, sys.stdin.readline().strip().split())
qis = [int(sys.stdin.readline().strip()) for _ in range(q)]
def query(n, q):
d = 2 * n - q
while d % 2 == 0:
d //= 2
return (n - d // 2)
for qi in qis:
print (query(n, qi))
``` | output | 1 | 30,665 | 12 | 61,331 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Dima is a beginner programmer. During his working process, he regularly has to repeat the following operation again and again: to remove every second element from the array. One day he has been bored with easy solutions of this problem, and ... | instruction | 0 | 30,666 | 12 | 61,332 |
Tags: constructive algorithms, math
Correct Solution:
```
#!/usr/bin/env python3
import sys
[n, q] = map(int, sys.stdin.readline().strip().split())
qis = [int(sys.stdin.readline().strip()) for _ in range(q)]
def query(n, q):
d = 2 * n - q
while d % 2 == 0:
d //= 2
return (n - d // 2)
for qi in qis:
print (que... | output | 1 | 30,666 | 12 | 61,333 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Dima is a beginner programmer. During his working process, he regularly has to repeat the following operation again and again: to remove every second element from the array. One day he has been bored with easy solutions of this problem, and ... | instruction | 0 | 30,667 | 12 | 61,334 |
Tags: constructive algorithms, math
Correct Solution:
```
import math
from decimal import Decimal
def na():
n = int(input())
b = [int(x) for x in input().split()]
return n,b
def nab():
n = int(input())
b = [int(x) for x in input().split()]
c = [int(x) for x in input().split()]
return n,b,c
def dv():
n, ... | output | 1 | 30,667 | 12 | 61,335 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Dima is a beginner programmer. During his working process, he regularly has to repeat the following operation again and again: to remove every second element from the array. One day he has been bored with easy solutions of this problem, and ... | instruction | 0 | 30,668 | 12 | 61,336 |
Tags: constructive algorithms, math
Correct Solution:
```
from collections import defaultdict, deque, Counter
from sys import stdin, stdout
from heapq import heappush, heappop
import math
import io
import os
import math
import bisect
input = io.BytesIO(os.read(0, os.fstat(0).st_size)).readline
# python3 15.py<in>op\
... | output | 1 | 30,668 | 12 | 61,337 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Dima is a beginner programmer. During his working process, he regularly has to repeat the following operation again and again: to remove every second element from the array. One day he has been bored with easy solutions of this problem, and ... | instruction | 0 | 30,669 | 12 | 61,338 |
Tags: constructive algorithms, math
Correct Solution:
```
from collections import defaultdict, deque, Counter
from sys import stdin, stdout
from heapq import heappush, heappop
import math
import io
import os
import math
import bisect
input = io.BytesIO(os.read(0, os.fstat(0).st_size)).readline
# python3 15.py<in>op\
... | output | 1 | 30,669 | 12 | 61,339 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Dima is a beginner programmer. During his working process, he regularly has to repeat the following operation again and again: to remove every second element from the array. One day he has been bored with easy solutions of this problem, and ... | instruction | 0 | 30,670 | 12 | 61,340 |
Tags: constructive algorithms, math
Correct Solution:
```
import sys
import bisect
input=sys.stdin.readline
#t=int(input())
t=1
mod=10**9+7
for _ in range(t):
#n=int(input())
n,q=map(int,input().split())
#s=input()
#l=list(map(int,input().split()))
#pref=[[0 for j in range(3001)] for i in range(n+2)... | output | 1 | 30,670 | 12 | 61,341 |
Provide a correct Python 3 solution for this coding contest problem.
We have a permutation of the integers from 1 through N, p_1, p_2, .., p_N. We also have M pairs of two integers between 1 and N (inclusive), represented as (x_1,y_1), (x_2,y_2), .., (x_M,y_M). AtCoDeer the deer is going to perform the following opera... | instruction | 0 | 30,783 | 12 | 61,566 |
"Correct Solution:
```
def root(i):
if par[i] == i:
return i
par[i] = root(par[i])
return par[i]
def union(x, y):
rx = root(x)
ry = root(y)
if rx != ry:
par[ry] = rx
def same(x, y):
return par[x] == par[y]
n,m = map(int, input().split(" "))
p = [0] + list(map(int, input().split(" ")))
a = [(lis... | output | 1 | 30,783 | 12 | 61,567 |
Provide a correct Python 3 solution for this coding contest problem.
We have a permutation of the integers from 1 through N, p_1, p_2, .., p_N. We also have M pairs of two integers between 1 and N (inclusive), represented as (x_1,y_1), (x_2,y_2), .., (x_M,y_M). AtCoDeer the deer is going to perform the following opera... | instruction | 0 | 30,784 | 12 | 61,568 |
"Correct Solution:
```
def find(x):
while union[x] != x:
x = union[x]
return x
N, M = map(int, input().split())
p = list(map(int, input().split()))
union = [i for i in range(N+1)]
for i in range(M):
x, y = map(int, input().split())
x = find(x)
while union[y] != y:
union[y... | output | 1 | 30,784 | 12 | 61,569 |
Provide a correct Python 3 solution for this coding contest problem.
We have a permutation of the integers from 1 through N, p_1, p_2, .., p_N. We also have M pairs of two integers between 1 and N (inclusive), represented as (x_1,y_1), (x_2,y_2), .., (x_M,y_M). AtCoDeer the deer is going to perform the following opera... | instruction | 0 | 30,785 | 12 | 61,570 |
"Correct Solution:
```
N,M=map(int,input().split())
p = list(map(int,input().split()))
for i in range(N): p[i] -= 1
par = [ i for i in range(N)]
def uf_root(a):
if par[a] == a: return a
par[a] = uf_root( par[a] )
return par[a]
def uf_same(a,b):
if (uf_root(a) ==uf_root(b)): return True
return False
def uf... | output | 1 | 30,785 | 12 | 61,571 |
Provide a correct Python 3 solution for this coding contest problem.
We have a permutation of the integers from 1 through N, p_1, p_2, .., p_N. We also have M pairs of two integers between 1 and N (inclusive), represented as (x_1,y_1), (x_2,y_2), .., (x_M,y_M). AtCoDeer the deer is going to perform the following opera... | instruction | 0 | 30,786 | 12 | 61,572 |
"Correct Solution:
```
n,m = map(int,input().split())
f = lambda x : int(x) - 1
p = list(map(f,input().split()))
par = [i for i in range(n)]
def root(x):
if par[x] == x:
return x
else:
par[x] = root(par[x])
return par[x]
def unite(x,y):
if root(x) == root(y):
return
els... | output | 1 | 30,786 | 12 | 61,573 |
Provide a correct Python 3 solution for this coding contest problem.
We have a permutation of the integers from 1 through N, p_1, p_2, .., p_N. We also have M pairs of two integers between 1 and N (inclusive), represented as (x_1,y_1), (x_2,y_2), .., (x_M,y_M). AtCoDeer the deer is going to perform the following opera... | instruction | 0 | 30,787 | 12 | 61,574 |
"Correct Solution:
```
def main():
cnt = 0
for _ in range(m):
x, y = map(int, input().split())
unite(x, y)
for i, pi in enumerate(p, 1):
if same(i, pi):
cnt += 1
print(cnt)
def root(x):
if parent[x] == x:
return x
parent[x] = root(parent[x])
... | output | 1 | 30,787 | 12 | 61,575 |
Provide a correct Python 3 solution for this coding contest problem.
We have a permutation of the integers from 1 through N, p_1, p_2, .., p_N. We also have M pairs of two integers between 1 and N (inclusive), represented as (x_1,y_1), (x_2,y_2), .., (x_M,y_M). AtCoDeer the deer is going to perform the following opera... | instruction | 0 | 30,788 | 12 | 61,576 |
"Correct Solution:
```
N, M = map(int, input().split())
p = [int(i) for i in input().split()]
# graph = [[]]*(N+1)
graph = [[] for _ in range(N+1)]
group = [0]*(N+1)
ans = 0
for _ in range(M):
x, y = map(int, input().split())
graph[x].append(y)
graph[y].append(x)
for i, num in enumerate(p, 1):
space = [... | output | 1 | 30,788 | 12 | 61,577 |
Provide a correct Python 3 solution for this coding contest problem.
We have a permutation of the integers from 1 through N, p_1, p_2, .., p_N. We also have M pairs of two integers between 1 and N (inclusive), represented as (x_1,y_1), (x_2,y_2), .., (x_M,y_M). AtCoDeer the deer is going to perform the following opera... | instruction | 0 | 30,789 | 12 | 61,578 |
"Correct Solution:
```
class UnionFind():
def __init__(self,n):
self.par=[i for i in range(n)]
def root(self, x):
if self.par[x]==x:
return x
else:
self.par[x]=self.root(self.par[x])
return self.par[x]
def same(self,x,y):
return self.root(x... | output | 1 | 30,789 | 12 | 61,579 |
Provide a correct Python 3 solution for this coding contest problem.
We have a permutation of the integers from 1 through N, p_1, p_2, .., p_N. We also have M pairs of two integers between 1 and N (inclusive), represented as (x_1,y_1), (x_2,y_2), .., (x_M,y_M). AtCoDeer the deer is going to perform the following opera... | instruction | 0 | 30,790 | 12 | 61,580 |
"Correct Solution:
```
a,b=map(int,input().split())
l=list(map(int,input().split()))
root=[i for i in range(a)]
height=[0]*a
group=[set() for i in range(a)]
def find(a):
f=a
if a==root[a]:
return a
while a!=root[a]:
a=root[a]
root[f]=a
return a
def union(a,b):
A=find(a)
B=find(b)
if ... | output | 1 | 30,790 | 12 | 61,581 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a permutation of the integers from 1 through N, p_1, p_2, .., p_N. We also have M pairs of two integers between 1 and N (inclusive), represented as (x_1,y_1), (x_2,y_2), .., (x_M,y_M). A... | instruction | 0 | 30,791 | 12 | 61,582 |
Yes | output | 1 | 30,791 | 12 | 61,583 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a permutation of the integers from 1 through N, p_1, p_2, .., p_N. We also have M pairs of two integers between 1 and N (inclusive), represented as (x_1,y_1), (x_2,y_2), .., (x_M,y_M). A... | instruction | 0 | 30,792 | 12 | 61,584 |
Yes | output | 1 | 30,792 | 12 | 61,585 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a permutation of the integers from 1 through N, p_1, p_2, .., p_N. We also have M pairs of two integers between 1 and N (inclusive), represented as (x_1,y_1), (x_2,y_2), .., (x_M,y_M). A... | instruction | 0 | 30,793 | 12 | 61,586 |
Yes | output | 1 | 30,793 | 12 | 61,587 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a permutation of the integers from 1 through N, p_1, p_2, .., p_N. We also have M pairs of two integers between 1 and N (inclusive), represented as (x_1,y_1), (x_2,y_2), .., (x_M,y_M). A... | instruction | 0 | 30,794 | 12 | 61,588 |
Yes | output | 1 | 30,794 | 12 | 61,589 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a permutation of the integers from 1 through N, p_1, p_2, .., p_N. We also have M pairs of two integers between 1 and N (inclusive), represented as (x_1,y_1), (x_2,y_2), .., (x_M,y_M). A... | instruction | 0 | 30,795 | 12 | 61,590 |
No | output | 1 | 30,795 | 12 | 61,591 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a permutation of the integers from 1 through N, p_1, p_2, .., p_N. We also have M pairs of two integers between 1 and N (inclusive), represented as (x_1,y_1), (x_2,y_2), .., (x_M,y_M). A... | instruction | 0 | 30,796 | 12 | 61,592 |
No | output | 1 | 30,796 | 12 | 61,593 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a permutation of the integers from 1 through N, p_1, p_2, .., p_N. We also have M pairs of two integers between 1 and N (inclusive), represented as (x_1,y_1), (x_2,y_2), .., (x_M,y_M). A... | instruction | 0 | 30,797 | 12 | 61,594 |
No | output | 1 | 30,797 | 12 | 61,595 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
We have a permutation of the integers from 1 through N, p_1, p_2, .., p_N. We also have M pairs of two integers between 1 and N (inclusive), represented as (x_1,y_1), (x_2,y_2), .., (x_M,y_M). A... | instruction | 0 | 30,798 | 12 | 61,596 |
No | output | 1 | 30,798 | 12 | 61,597 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The sequence of integers a_1, a_2, ..., a_k is called a good array if a_1 = k - 1 and a_1 > 0. For example, the sequences [3, -1, 44, 0], [1, -99] are good arrays, and the sequences [3, 7, 8], [2, 5, 4, 1], [0] — are not.
A sequence of inte... | instruction | 0 | 30,961 | 12 | 61,922 |
Tags: combinatorics, dp
Correct Solution:
```
mod = 998244353
n = int(input())
a = list(map(int, input().split()))
c = [[1]*n for _ in range(n)]
for i in range(n):
for j in range(1, i//2 + 1):
c[i][i-j] = c[i][j] = (c[i-1][j] + c[i-1][j-1]) % mod
d = [0] * n + [1]
for i in range(n-1,-1,-1):
if a[i] ... | output | 1 | 30,961 | 12 | 61,923 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The sequence of integers a_1, a_2, ..., a_k is called a good array if a_1 = k - 1 and a_1 > 0. For example, the sequences [3, -1, 44, 0], [1, -99] are good arrays, and the sequences [3, 7, 8], [2, 5, 4, 1], [0] — are not.
A sequence of inte... | instruction | 0 | 30,962 | 12 | 61,924 |
Tags: combinatorics, dp
Correct Solution:
```
n = int(input())
m = 998244353
dl = [1] + [0] * n;
for i in map(int, input().split()) :
v = dl[:]
if(0 < i < n) :
v[i] = (v[i] + v[0]) % m
for j in range(n) :
v[j] = (v[j] + dl[j + 1]) % m
dl = v
print((dl[0] - 1) % m)
... | output | 1 | 30,962 | 12 | 61,925 |
Provide tags and a correct Python 3 solution for this coding contest problem.
The sequence of integers a_1, a_2, ..., a_k is called a good array if a_1 = k - 1 and a_1 > 0. For example, the sequences [3, -1, 44, 0], [1, -99] are good arrays, and the sequences [3, 7, 8], [2, 5, 4, 1], [0] — are not.
A sequence of inte... | instruction | 0 | 30,963 | 12 | 61,926 |
Tags: combinatorics, dp
Correct Solution:
```
def computeCnksMod(N, mod):
res = [[0] * (N+1) for i in range(N+1)]
res[0][0] = 1
for n in range(1, N+1):
res[n][0] = res[n-1][0]
for k in range(1, n+1):
res[n][k] = (res[n-1][k] + res[n-1][k-1]) % mod
return res
magic = 9982443... | output | 1 | 30,963 | 12 | 61,927 |
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