message stringlengths 2 49.9k | message_type stringclasses 2
values | message_id int64 0 1 | conversation_id int64 446 108k | cluster float64 13 13 | __index_level_0__ int64 892 217k |
|---|---|---|---|---|---|
Provide tags and a correct Python 3 solution for this coding contest problem.
For a given sequence of distinct non-negative integers (b_1, b_2, ..., b_k) we determine if it is good in the following way:
* Consider a graph on k nodes, with numbers from b_1 to b_k written on them.
* For every i from 1 to k: find su... | instruction | 0 | 67,500 | 13 | 135,000 |
Tags: binary search, bitmasks, data structures, divide and conquer, dp, trees
Correct Solution:
```
# coding: utf-8
from math import log2
def dfs (a):
if len(a) == 1:
return 1
mask = 1 << int(log2(a[0] ^ a[-1]))
for i, v in enumerate(a):
if v & mask:
break
return max(dfs(a[0 : i]), ... | output | 1 | 67,500 | 13 | 135,001 |
Provide tags and a correct Python 3 solution for this coding contest problem.
For a given sequence of distinct non-negative integers (b_1, b_2, ..., b_k) we determine if it is good in the following way:
* Consider a graph on k nodes, with numbers from b_1 to b_k written on them.
* For every i from 1 to k: find su... | instruction | 0 | 67,501 | 13 | 135,002 |
Tags: binary search, bitmasks, data structures, divide and conquer, dp, trees
Correct Solution:
```
# according to editorial
import math
# def binary_search(l, target): // this has not been tested
# # returns index i such that l[j] < target iff j < i
# if l[0] >= target:
# return 0
# if l[-1] < t... | output | 1 | 67,501 | 13 | 135,003 |
Provide tags and a correct Python 3 solution for this coding contest problem.
For a given sequence of distinct non-negative integers (b_1, b_2, ..., b_k) we determine if it is good in the following way:
* Consider a graph on k nodes, with numbers from b_1 to b_k written on them.
* For every i from 1 to k: find su... | instruction | 0 | 67,502 | 13 | 135,004 |
Tags: binary search, bitmasks, data structures, divide and conquer, dp, trees
Correct Solution:
```
n = int(input())
a = list(map(int, input().split()))
def rec(s, i):
if len(s) in (0, 1, 2):
return len(s)
mask = 1 << i
a = []
b = []
for one in s:
if one & mask:
a.appe... | output | 1 | 67,502 | 13 | 135,005 |
Provide tags and a correct Python 3 solution for this coding contest problem.
For a given sequence of distinct non-negative integers (b_1, b_2, ..., b_k) we determine if it is good in the following way:
* Consider a graph on k nodes, with numbers from b_1 to b_k written on them.
* For every i from 1 to k: find su... | instruction | 0 | 67,503 | 13 | 135,006 |
Tags: binary search, bitmasks, data structures, divide and conquer, dp, trees
Correct Solution:
```
import io
import os
input = io.BytesIO(os.read(0, os.fstat(0).st_size)).readline
def costs(l, bit = 32):
if len(l) <= 2:
return 0
left = []
right = []
for el in l:
if el & (1<<bit):... | output | 1 | 67,503 | 13 | 135,007 |
Provide tags and a correct Python 3 solution for this coding contest problem.
For a given sequence of distinct non-negative integers (b_1, b_2, ..., b_k) we determine if it is good in the following way:
* Consider a graph on k nodes, with numbers from b_1 to b_k written on them.
* For every i from 1 to k: find su... | instruction | 0 | 67,504 | 13 | 135,008 |
Tags: binary search, bitmasks, data structures, divide and conquer, dp, trees
Correct Solution:
```
n = int(input());a = sorted([int(x) for x in input().split()])
def solve(l, bit):
if len(l) <= 1: return 0
if bit == 0: return 0
high = [x ^ (1 << bit) for x in l if x & (1 << bit)];low = [x for x in l if not x & (1... | output | 1 | 67,504 | 13 | 135,009 |
Provide tags and a correct Python 3 solution for this coding contest problem.
For a given sequence of distinct non-negative integers (b_1, b_2, ..., b_k) we determine if it is good in the following way:
* Consider a graph on k nodes, with numbers from b_1 to b_k written on them.
* For every i from 1 to k: find su... | instruction | 0 | 67,505 | 13 | 135,010 |
Tags: binary search, bitmasks, data structures, divide and conquer, dp, trees
Correct Solution:
```
class Trie:
class TrieNode:
def __init__(self) -> None:
self.left = None
self.right = None
self.leaves = 0
self.ends = False
def __init__(self, n... | output | 1 | 67,505 | 13 | 135,011 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
For a given sequence of distinct non-negative integers (b_1, b_2, ..., b_k) we determine if it is good in the following way:
* Consider a graph on k nodes, with numbers from b_1 to b_k writte... | instruction | 0 | 67,506 | 13 | 135,012 |
Yes | output | 1 | 67,506 | 13 | 135,013 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
For a given sequence of distinct non-negative integers (b_1, b_2, ..., b_k) we determine if it is good in the following way:
* Consider a graph on k nodes, with numbers from b_1 to b_k writte... | instruction | 0 | 67,507 | 13 | 135,014 |
Yes | output | 1 | 67,507 | 13 | 135,015 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
For a given sequence of distinct non-negative integers (b_1, b_2, ..., b_k) we determine if it is good in the following way:
* Consider a graph on k nodes, with numbers from b_1 to b_k writte... | instruction | 0 | 67,508 | 13 | 135,016 |
Yes | output | 1 | 67,508 | 13 | 135,017 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
For a given sequence of distinct non-negative integers (b_1, b_2, ..., b_k) we determine if it is good in the following way:
* Consider a graph on k nodes, with numbers from b_1 to b_k writte... | instruction | 0 | 67,509 | 13 | 135,018 |
No | output | 1 | 67,509 | 13 | 135,019 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
For a given sequence of distinct non-negative integers (b_1, b_2, ..., b_k) we determine if it is good in the following way:
* Consider a graph on k nodes, with numbers from b_1 to b_k writte... | instruction | 0 | 67,510 | 13 | 135,020 |
No | output | 1 | 67,510 | 13 | 135,021 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
For a given sequence of distinct non-negative integers (b_1, b_2, ..., b_k) we determine if it is good in the following way:
* Consider a graph on k nodes, with numbers from b_1 to b_k writte... | instruction | 0 | 67,511 | 13 | 135,022 |
No | output | 1 | 67,511 | 13 | 135,023 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
For a given sequence of distinct non-negative integers (b_1, b_2, ..., b_k) we determine if it is good in the following way:
* Consider a graph on k nodes, with numbers from b_1 to b_k writte... | instruction | 0 | 67,512 | 13 | 135,024 |
No | output | 1 | 67,512 | 13 | 135,025 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alice and Bob are going to celebrate Christmas by playing a game with a tree of presents. The tree has n nodes (numbered 1 to n, with some node r as its root). There are a_i presents are hanging from the i-th node.
Before beginning the game... | instruction | 0 | 67,529 | 13 | 135,058 |
Tags: bitmasks, data structures, dfs and similar, dp, games, math, trees
Correct Solution:
```
import sys
from sys import stdin
from collections import deque
n,k = map(int,stdin.readline().split())
N,K = n,k
lis = [ [] for i in range(N) ]
for i in range(N-1):
x,y = map(int,stdin.readline().split())
x -= 1
... | output | 1 | 67,529 | 13 | 135,059 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Alice and Bob are going to celebrate Christmas by playing a game with a tree of presents. The tree has n nodes (numbered 1 to n, with some node r as its root). There are a_i presents are hanging... | instruction | 0 | 67,530 | 13 | 135,060 |
No | output | 1 | 67,530 | 13 | 135,061 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let's define a forest as a non-directed acyclic graph (also without loops and parallel edges). One day Misha played with the forest consisting of n vertices. For each vertex v from 0 to n - 1 he wrote down two integers, degreev and sv, were ... | instruction | 0 | 67,642 | 13 | 135,284 |
Tags: constructive algorithms, data structures, greedy, sortings, trees
Correct Solution:
```
from collections import deque
n = int(input())
process = deque()
vs = []
for i in range(n):
d, s = map(int, input().split())
if d == 1:
process.append(i)
vs.append((d, s))
edges = []
while process:
a = process.popleft()
... | output | 1 | 67,642 | 13 | 135,285 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let's define a forest as a non-directed acyclic graph (also without loops and parallel edges). One day Misha played with the forest consisting of n vertices. For each vertex v from 0 to n - 1 he wrote down two integers, degreev and sv, were ... | instruction | 0 | 67,643 | 13 | 135,286 |
Tags: constructive algorithms, data structures, greedy, sortings, trees
Correct Solution:
```
n = int(input())
ss = [0] * n
degs = [0] * n
leaves = []
for i in range(n):
degs[i], ss[i] = list(map(int, input().split()))
if degs[i] == 1:
leaves.append(i)
edges = []
while len(leaves) != 0:
leaf = leav... | output | 1 | 67,643 | 13 | 135,287 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let's define a forest as a non-directed acyclic graph (also without loops and parallel edges). One day Misha played with the forest consisting of n vertices. For each vertex v from 0 to n - 1 he wrote down two integers, degreev and sv, were ... | instruction | 0 | 67,644 | 13 | 135,288 |
Tags: constructive algorithms, data structures, greedy, sortings, trees
Correct Solution:
```
def fastio():
import sys
from io import StringIO
from atexit import register
global input
sys.stdin = StringIO(sys.stdin.read())
input = lambda : sys.stdin.readline().rstrip('\r\n')
sys.stdout = StringIO()
register(la... | output | 1 | 67,644 | 13 | 135,289 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let's define a forest as a non-directed acyclic graph (also without loops and parallel edges). One day Misha played with the forest consisting of n vertices. For each vertex v from 0 to n - 1 he wrote down two integers, degreev and sv, were ... | instruction | 0 | 67,645 | 13 | 135,290 |
Tags: constructive algorithms, data structures, greedy, sortings, trees
Correct Solution:
```
from sys import stdin,stdout,setrecursionlimit
stdin.readline
def mp(): return list(map(int, stdin.readline().strip().split()))
def it():return int(stdin.readline().strip())
from collections import defaultdict as dd,Counter as... | output | 1 | 67,645 | 13 | 135,291 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let's define a forest as a non-directed acyclic graph (also without loops and parallel edges). One day Misha played with the forest consisting of n vertices. For each vertex v from 0 to n - 1 he wrote down two integers, degreev and sv, were ... | instruction | 0 | 67,646 | 13 | 135,292 |
Tags: constructive algorithms, data structures, greedy, sortings, trees
Correct Solution:
```
def main():
n, l, ones, j = int(input()), [], [], 0
for i in range(n):
degree, s = map(int, input().split())
l.append((degree, s))
j += degree
if degree == 1:
ones.append(i)
... | output | 1 | 67,646 | 13 | 135,293 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let's define a forest as a non-directed acyclic graph (also without loops and parallel edges). One day Misha played with the forest consisting of n vertices. For each vertex v from 0 to n - 1 he wrote down two integers, degreev and sv, were ... | instruction | 0 | 67,647 | 13 | 135,294 |
Tags: constructive algorithms, data structures, greedy, sortings, trees
Correct Solution:
```
def main():
n = int(input())
ones, l = set(), []
for i in range(n):
degree, s = map(int, input().split())
if degree == 1:
ones.add(i)
l.append((degree, s))
res = []
while... | output | 1 | 67,647 | 13 | 135,295 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let's define a forest as a non-directed acyclic graph (also without loops and parallel edges). One day Misha played with the forest consisting of n vertices. For each vertex v from 0 to n - 1 he wrote down two integers, degreev and sv, were ... | instruction | 0 | 67,648 | 13 | 135,296 |
Tags: constructive algorithms, data structures, greedy, sortings, trees
Correct Solution:
```
n=int(input())
l=[]
stack=[]
for i in range(n):
d,s=map(int,input().split())
if d==1:
stack.append(i)
l.append([d,s])
c=0
edges=''
while stack:
i=stack.pop(0)
d,s=l[i]
if d==0:
continue
... | output | 1 | 67,648 | 13 | 135,297 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Let's define a forest as a non-directed acyclic graph (also without loops and parallel edges). One day Misha played with the forest consisting of n vertices. For each vertex v from 0 to n - 1 he wrote down two integers, degreev and sv, were ... | instruction | 0 | 67,649 | 13 | 135,298 |
Tags: constructive algorithms, data structures, greedy, sortings, trees
Correct Solution:
```
n = int(input())
d = []
v = []
for i in range(n):
(a, b) = map(int, input().split())
v.append([a, b, i])
g = dict()
for i in range(n+20):
g[i] = set()
for i in v:
if i[0] in g:
g[i[0]].add(i[2])
el... | output | 1 | 67,649 | 13 | 135,299 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's define a forest as a non-directed acyclic graph (also without loops and parallel edges). One day Misha played with the forest consisting of n vertices. For each vertex v from 0 to n - 1 he... | instruction | 0 | 67,650 | 13 | 135,300 |
Yes | output | 1 | 67,650 | 13 | 135,301 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's define a forest as a non-directed acyclic graph (also without loops and parallel edges). One day Misha played with the forest consisting of n vertices. For each vertex v from 0 to n - 1 he... | instruction | 0 | 67,651 | 13 | 135,302 |
Yes | output | 1 | 67,651 | 13 | 135,303 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's define a forest as a non-directed acyclic graph (also without loops and parallel edges). One day Misha played with the forest consisting of n vertices. For each vertex v from 0 to n - 1 he... | instruction | 0 | 67,652 | 13 | 135,304 |
Yes | output | 1 | 67,652 | 13 | 135,305 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's define a forest as a non-directed acyclic graph (also without loops and parallel edges). One day Misha played with the forest consisting of n vertices. For each vertex v from 0 to n - 1 he... | instruction | 0 | 67,653 | 13 | 135,306 |
Yes | output | 1 | 67,653 | 13 | 135,307 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's define a forest as a non-directed acyclic graph (also without loops and parallel edges). One day Misha played with the forest consisting of n vertices. For each vertex v from 0 to n - 1 he... | instruction | 0 | 67,654 | 13 | 135,308 |
No | output | 1 | 67,654 | 13 | 135,309 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's define a forest as a non-directed acyclic graph (also without loops and parallel edges). One day Misha played with the forest consisting of n vertices. For each vertex v from 0 to n - 1 he... | instruction | 0 | 67,655 | 13 | 135,310 |
No | output | 1 | 67,655 | 13 | 135,311 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's define a forest as a non-directed acyclic graph (also without loops and parallel edges). One day Misha played with the forest consisting of n vertices. For each vertex v from 0 to n - 1 he... | instruction | 0 | 67,656 | 13 | 135,312 |
No | output | 1 | 67,656 | 13 | 135,313 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Let's define a forest as a non-directed acyclic graph (also without loops and parallel edges). One day Misha played with the forest consisting of n vertices. For each vertex v from 0 to n - 1 he... | instruction | 0 | 67,657 | 13 | 135,314 |
No | output | 1 | 67,657 | 13 | 135,315 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alyona has a tree with n vertices. The root of the tree is the vertex 1. In each vertex Alyona wrote an positive integer, in the vertex i she wrote ai. Moreover, the girl wrote a positive integer to every edge of the tree (possibly, differen... | instruction | 0 | 67,752 | 13 | 135,504 |
Tags: binary search, data structures, dfs and similar, graphs, trees
Correct Solution:
```
from itertools import accumulate
from math import *
import os, sys
import threading
from io import BytesIO
from bisect import bisect_left
input = BytesIO(os.read(0, os.fstat(0).st_size)).readline
n = int(input())
a = list(map... | output | 1 | 67,752 | 13 | 135,505 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alyona has a tree with n vertices. The root of the tree is the vertex 1. In each vertex Alyona wrote an positive integer, in the vertex i she wrote ai. Moreover, the girl wrote a positive integer to every edge of the tree (possibly, differen... | instruction | 0 | 67,753 | 13 | 135,506 |
Tags: binary search, data structures, dfs and similar, graphs, trees
Correct Solution:
```
#!/usr/bin/env python3
import sys
import threading
from bisect import *
from itertools import *
#def ri():
# return map(int, input().split())
def dfs(v):
global d
d += 1
dist[d] = w[v] + dist[d-1]
add[d] =... | output | 1 | 67,753 | 13 | 135,507 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alyona has a tree with n vertices. The root of the tree is the vertex 1. In each vertex Alyona wrote an positive integer, in the vertex i she wrote ai. Moreover, the girl wrote a positive integer to every edge of the tree (possibly, differen... | instruction | 0 | 67,754 | 13 | 135,508 |
Tags: binary search, data structures, dfs and similar, graphs, trees
Correct Solution:
```
#!/usr/bin/env python3
import sys
import threading
from bisect import *
def ri():
return map(int, input().split())
def dfs(v, d, c, w):
d += 1
dist[d] = w[v] + dist[d-1]
add[d] = 0
for i in c[v]:
df... | output | 1 | 67,754 | 13 | 135,509 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alyona has a tree with n vertices. The root of the tree is the vertex 1. In each vertex Alyona wrote an positive integer, in the vertex i she wrote ai. Moreover, the girl wrote a positive integer to every edge of the tree (possibly, differen... | instruction | 0 | 67,755 | 13 | 135,510 |
Tags: binary search, data structures, dfs and similar, graphs, trees
Correct Solution:
```
import sys
import threading
from bisect import *
from itertools import *
from collections import defaultdict
from math import log2
from bisect import bisect_left
import os
import sys
from io import BytesIO, IOBase
from types imp... | output | 1 | 67,755 | 13 | 135,511 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alyona has a tree with n vertices. The root of the tree is the vertex 1. In each vertex Alyona wrote an positive integer, in the vertex i she wrote ai. Moreover, the girl wrote a positive integer to every edge of the tree (possibly, differen... | instruction | 0 | 67,756 | 13 | 135,512 |
Tags: binary search, data structures, dfs and similar, graphs, trees
Correct Solution:
```
#!/usr/bin/env python3
import sys
import threading
from bisect import *
from itertools import *
#def ri():
# return map(int, input().split())
def dfs(v):
global d
d += 1
dist.append(w[v] + dist[d-1])
add[d... | output | 1 | 67,756 | 13 | 135,513 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alyona has a tree with n vertices. The root of the tree is the vertex 1. In each vertex Alyona wrote an positive integer, in the vertex i she wrote ai. Moreover, the girl wrote a positive integer to every edge of the tree (possibly, differen... | instruction | 0 | 67,757 | 13 | 135,514 |
Tags: binary search, data structures, dfs and similar, graphs, trees
Correct Solution:
```
#!/usr/bin/env python3
import sys
import threading
from bisect import *
#def ri():
# return map(int, input().split())
def dfs(v, d, c, w):
d += 1
dist[d] = w[v] + dist[d-1]
add[d] = 0
for i in c[v]:
... | output | 1 | 67,757 | 13 | 135,515 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alyona has a tree with n vertices. The root of the tree is the vertex 1. In each vertex Alyona wrote an positive integer, in the vertex i she wrote ai. Moreover, the girl wrote a positive integer to every edge of the tree (possibly, differen... | instruction | 0 | 67,758 | 13 | 135,516 |
Tags: binary search, data structures, dfs and similar, graphs, trees
Correct Solution:
```
import sys
import threading
from bisect import *
from itertools import *
#def ri():
# return map(int, input().split())
def dfs(v):
global d
d += 1
dist[d] = w[v] + dist[d-1]
add[d] = 0
for i in c[v]... | output | 1 | 67,758 | 13 | 135,517 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Alyona has a tree with n vertices. The root of the tree is the vertex 1. In each vertex Alyona wrote an positive integer, in the vertex i she wrote ai. Moreover, the girl wrote a positive integer to every edge of the tree (possibly, differen... | instruction | 0 | 67,759 | 13 | 135,518 |
Tags: binary search, data structures, dfs and similar, graphs, trees
Correct Solution:
```
#!/usr/bin/env python3
import sys
import threading
from bisect import *
#def ri():
# return map(int, input().split())
def dfs(v):
global d
d += 1
dist[d] = w[v] + dist[d-1]
add[d] = 0
for i in c[v]:
... | output | 1 | 67,759 | 13 | 135,519 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Alyona has a tree with n vertices. The root of the tree is the vertex 1. In each vertex Alyona wrote an positive integer, in the vertex i she wrote ai. Moreover, the girl wrote a positive intege... | instruction | 0 | 67,760 | 13 | 135,520 |
Yes | output | 1 | 67,760 | 13 | 135,521 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Alyona has a tree with n vertices. The root of the tree is the vertex 1. In each vertex Alyona wrote an positive integer, in the vertex i she wrote ai. Moreover, the girl wrote a positive intege... | instruction | 0 | 67,761 | 13 | 135,522 |
No | output | 1 | 67,761 | 13 | 135,523 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Alyona has a tree with n vertices. The root of the tree is the vertex 1. In each vertex Alyona wrote an positive integer, in the vertex i she wrote ai. Moreover, the girl wrote a positive intege... | instruction | 0 | 67,762 | 13 | 135,524 |
No | output | 1 | 67,762 | 13 | 135,525 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Alyona has a tree with n vertices. The root of the tree is the vertex 1. In each vertex Alyona wrote an positive integer, in the vertex i she wrote ai. Moreover, the girl wrote a positive intege... | instruction | 0 | 67,763 | 13 | 135,526 |
No | output | 1 | 67,763 | 13 | 135,527 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Alyona has a tree with n vertices. The root of the tree is the vertex 1. In each vertex Alyona wrote an positive integer, in the vertex i she wrote ai. Moreover, the girl wrote a positive intege... | instruction | 0 | 67,764 | 13 | 135,528 |
No | output | 1 | 67,764 | 13 | 135,529 |
Provide tags and a correct Python 3 solution for this coding contest problem.
...Once upon a time a man came to the sea. The sea was stormy and dark. The man started to call for the little mermaid to appear but alas, he only woke up Cthulhu...
Whereas on the other end of the world Pentagon is actively collecting info... | instruction | 0 | 68,160 | 13 | 136,320 |
Tags: dfs and similar, dsu, graphs
Correct Solution:
```
inp = input().split()
n = int(inp[0])
m = int(inp[1])
def dfs(x):
visited.add(x)
for y in e[x]:
if not y in visited:
dfs(y)
if n >= 3 and n == m:
visited = set()
e = [[] for i in range(n + 1)]
for i in range(... | output | 1 | 68,160 | 13 | 136,321 |
Provide tags and a correct Python 3 solution for this coding contest problem.
...Once upon a time a man came to the sea. The sea was stormy and dark. The man started to call for the little mermaid to appear but alas, he only woke up Cthulhu...
Whereas on the other end of the world Pentagon is actively collecting info... | instruction | 0 | 68,161 | 13 | 136,322 |
Tags: dfs and similar, dsu, graphs
Correct Solution:
```
def dfs (num,av):
global res; b.add(num)
for v in g[num]:
if v!=av:
if v in b: res += 1; g[v].remove(num)
else:b.add(v); dfs(v,num)
n,m = map (int,input().split())
g,b,res = [[] for _ in range(n)], set(),0
for _ in range(m)... | output | 1 | 68,161 | 13 | 136,323 |
Provide tags and a correct Python 3 solution for this coding contest problem.
...Once upon a time a man came to the sea. The sea was stormy and dark. The man started to call for the little mermaid to appear but alas, he only woke up Cthulhu...
Whereas on the other end of the world Pentagon is actively collecting info... | instruction | 0 | 68,162 | 13 | 136,324 |
Tags: dfs and similar, dsu, graphs
Correct Solution:
```
n, m = [int(i) for i in input().split()]
c = [int(i) for i in range(n+1)]
def find (u):
if u == c[u]:
return u
c[u] = find(c[u])
return c[u]
ciclos = 0
for i in range(m):
x, y = [int(j) for j in input().split()]
x = find(x)
y = f... | output | 1 | 68,162 | 13 | 136,325 |
Provide tags and a correct Python 3 solution for this coding contest problem.
...Once upon a time a man came to the sea. The sea was stormy and dark. The man started to call for the little mermaid to appear but alas, he only woke up Cthulhu...
Whereas on the other end of the world Pentagon is actively collecting info... | instruction | 0 | 68,163 | 13 | 136,326 |
Tags: dfs and similar, dsu, graphs
Correct Solution:
```
from collections import *
from sys import stdin
def arr_inp(n):
if n == 1:
return [int(x) for x in stdin.readline().split()]
elif n == 2:
return [float(x) for x in stdin.readline().split()]
else:
return list(stdin.readline()[... | output | 1 | 68,163 | 13 | 136,327 |
Provide tags and a correct Python 3 solution for this coding contest problem.
...Once upon a time a man came to the sea. The sea was stormy and dark. The man started to call for the little mermaid to appear but alas, he only woke up Cthulhu...
Whereas on the other end of the world Pentagon is actively collecting info... | instruction | 0 | 68,164 | 13 | 136,328 |
Tags: dfs and similar, dsu, graphs
Correct Solution:
```
import sys
def getroot(lab, u):
if lab[u] == -1:
return u
lab[u] = getroot(lab, lab[u])
return lab[u]
def union(lab, cou, a, b):
if cou[a] > cou[b]:
cou[a] += cou[b]
lab[b] = a
else:
cou[b] += cou[a]
l... | output | 1 | 68,164 | 13 | 136,329 |
Provide tags and a correct Python 3 solution for this coding contest problem.
...Once upon a time a man came to the sea. The sea was stormy and dark. The man started to call for the little mermaid to appear but alas, he only woke up Cthulhu...
Whereas on the other end of the world Pentagon is actively collecting info... | instruction | 0 | 68,165 | 13 | 136,330 |
Tags: dfs and similar, dsu, graphs
Correct Solution:
```
n,m=map(int,input().split())
a=[[] for _ in range(n+1)]
vis=[]
for _ in range(m):
x,y=map(int,input().split())
a[x].append(y)
a[y].append(x)
def dfs(x):
vis.append(x)
for z in a[x]:
if not(z in vis):
dfs(z)
dfs(1)
if n<3 o... | output | 1 | 68,165 | 13 | 136,331 |
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