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 |
|---|---|---|---|---|---|
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The clique problem is one of the most well-known NP-complete problems. Under some simplification it can be formulated as follows. Consider an undirected graph G. It is required to find a subset ... | instruction | 0 | 95,680 | 13 | 191,360 |
Yes | output | 1 | 95,680 | 13 | 191,361 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The clique problem is one of the most well-known NP-complete problems. Under some simplification it can be formulated as follows. Consider an undirected graph G. It is required to find a subset ... | instruction | 0 | 95,681 | 13 | 191,362 |
Yes | output | 1 | 95,681 | 13 | 191,363 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The clique problem is one of the most well-known NP-complete problems. Under some simplification it can be formulated as follows. Consider an undirected graph G. It is required to find a subset ... | instruction | 0 | 95,682 | 13 | 191,364 |
Yes | output | 1 | 95,682 | 13 | 191,365 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The clique problem is one of the most well-known NP-complete problems. Under some simplification it can be formulated as follows. Consider an undirected graph G. It is required to find a subset ... | instruction | 0 | 95,683 | 13 | 191,366 |
No | output | 1 | 95,683 | 13 | 191,367 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The clique problem is one of the most well-known NP-complete problems. Under some simplification it can be formulated as follows. Consider an undirected graph G. It is required to find a subset ... | instruction | 0 | 95,684 | 13 | 191,368 |
No | output | 1 | 95,684 | 13 | 191,369 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The clique problem is one of the most well-known NP-complete problems. Under some simplification it can be formulated as follows. Consider an undirected graph G. It is required to find a subset ... | instruction | 0 | 95,685 | 13 | 191,370 |
No | output | 1 | 95,685 | 13 | 191,371 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
The clique problem is one of the most well-known NP-complete problems. Under some simplification it can be formulated as follows. Consider an undirected graph G. It is required to find a subset ... | instruction | 0 | 95,686 | 13 | 191,372 |
No | output | 1 | 95,686 | 13 | 191,373 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Each New Year Timofey and his friends cut down a tree of n vertices and bring it home. After that they paint all the n its vertices, so that the i-th vertex gets color ci.
Now it's time for Timofey birthday, and his mother asked him to remo... | instruction | 0 | 95,747 | 13 | 191,494 |
Tags: dfs and similar, dp, dsu, graphs, implementation, trees
Correct Solution:
```
def main():
n = int(input())
edges = []
for _ in range(n - 1):
u, v = map(int, input().split())
u -= 1
v -= 1
edges.append((u, v))
colors = list(map(int, input().split()))
suspect = [... | output | 1 | 95,747 | 13 | 191,495 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Each New Year Timofey and his friends cut down a tree of n vertices and bring it home. After that they paint all the n its vertices, so that the i-th vertex gets color ci.
Now it's time for Timofey birthday, and his mother asked him to remo... | instruction | 0 | 95,748 | 13 | 191,496 |
Tags: dfs and similar, dp, dsu, graphs, implementation, trees
Correct Solution:
```
import sys, os, io
def rs(): return sys.stdin.readline().rstrip()
def ri(): return int(sys.stdin.readline())
def ria(): return list(map(int, sys.stdin.readline().split()))
def ws(s): sys.stdout.write(s + '\n')
def wi(n): sys.stdout.writ... | output | 1 | 95,748 | 13 | 191,497 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Each New Year Timofey and his friends cut down a tree of n vertices and bring it home. After that they paint all the n its vertices, so that the i-th vertex gets color ci.
Now it's time for Timofey birthday, and his mother asked him to remo... | instruction | 0 | 95,749 | 13 | 191,498 |
Tags: dfs and similar, dp, dsu, graphs, implementation, trees
Correct Solution:
```
# import itertools
# import bisect
import math
from collections import defaultdict
import os
import sys
from io import BytesIO, IOBase
# sys.setrecursionlimit(10 ** 5)
ii = lambda: int(input())
lmii = lambda: list(map(int, input().spli... | output | 1 | 95,749 | 13 | 191,499 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Each New Year Timofey and his friends cut down a tree of n vertices and bring it home. After that they paint all the n its vertices, so that the i-th vertex gets color ci.
Now it's time for Timofey birthday, and his mother asked him to remo... | instruction | 0 | 95,750 | 13 | 191,500 |
Tags: dfs and similar, dp, dsu, graphs, implementation, trees
Correct Solution:
```
n = int(input())
arr = []
brr = []
for i in range(n-1):
u,v = list(map(int,input().split()))
arr.append(u)
brr.append(v)
color = list(map(int,input().split()))
ans = []
for i in range(n-1):
if color[arr[i]-1]!=color[brr... | output | 1 | 95,750 | 13 | 191,501 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Each New Year Timofey and his friends cut down a tree of n vertices and bring it home. After that they paint all the n its vertices, so that the i-th vertex gets color ci.
Now it's time for Timofey birthday, and his mother asked him to remo... | instruction | 0 | 95,751 | 13 | 191,502 |
Tags: dfs and similar, dp, dsu, graphs, implementation, trees
Correct Solution:
```
import sys
def answer(n, u, v, colors):
suspect = []
for i in range(n-1):
if colors[u[i]-1] != colors[v[i]-1]:
suspect.append([u[i], v[i]])
if len(suspect) == 0:
print('YES')
print('1')... | output | 1 | 95,751 | 13 | 191,503 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Each New Year Timofey and his friends cut down a tree of n vertices and bring it home. After that they paint all the n its vertices, so that the i-th vertex gets color ci.
Now it's time for Timofey birthday, and his mother asked him to remo... | instruction | 0 | 95,752 | 13 | 191,504 |
Tags: dfs and similar, dp, dsu, graphs, implementation, trees
Correct Solution:
```
n = int(input())
edges = []
for _ in range(n-1):
u,v = map(int,input().split())
edges.append([u,v])
ct = [0]+list(map(int,input().split()))
ds = [-1]+[0]*n
vs = 0
for u,v in edges:
if ct[u]!=ct[v]:
ds[u]+=1
d... | output | 1 | 95,752 | 13 | 191,505 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Each New Year Timofey and his friends cut down a tree of n vertices and bring it home. After that they paint all the n its vertices, so that the i-th vertex gets color ci.
Now it's time for Timofey birthday, and his mother asked him to remo... | instruction | 0 | 95,753 | 13 | 191,506 |
Tags: dfs and similar, dp, dsu, graphs, implementation, trees
Correct Solution:
```
import sys
import collections
import itertools
n = int(sys.stdin.readline())
graph = collections.defaultdict(list)
for _ in range(n - 1):
u, v = map(int, str.split(sys.stdin.readline()))
graph[u].append(v)
graph[v].append... | output | 1 | 95,753 | 13 | 191,507 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Each New Year Timofey and his friends cut down a tree of n vertices and bring it home. After that they paint all the n its vertices, so that the i-th vertex gets color ci.
Now it's time for Timofey birthday, and his mother asked him to remo... | instruction | 0 | 95,754 | 13 | 191,508 |
Tags: dfs and similar, dp, dsu, graphs, implementation, trees
Correct Solution:
```
n=int(input())
ip=[[] for i in range(n)]
for i in range(n-1):
a,b=map(int,input().split())
a-=1
b-=1
ip[a].append(b)
ip[b].append(a)
col=list(map(int,input().split()))
cs=[0 for i in range(n)]
for i in range(n):
... | output | 1 | 95,754 | 13 | 191,509 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Each New Year Timofey and his friends cut down a tree of n vertices and bring it home. After that they paint all the n its vertices, so that the i-th vertex gets color ci.
Now it's time for Tim... | instruction | 0 | 95,755 | 13 | 191,510 |
Yes | output | 1 | 95,755 | 13 | 191,511 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Each New Year Timofey and his friends cut down a tree of n vertices and bring it home. After that they paint all the n its vertices, so that the i-th vertex gets color ci.
Now it's time for Tim... | instruction | 0 | 95,756 | 13 | 191,512 |
Yes | output | 1 | 95,756 | 13 | 191,513 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Each New Year Timofey and his friends cut down a tree of n vertices and bring it home. After that they paint all the n its vertices, so that the i-th vertex gets color ci.
Now it's time for Tim... | instruction | 0 | 95,757 | 13 | 191,514 |
Yes | output | 1 | 95,757 | 13 | 191,515 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Each New Year Timofey and his friends cut down a tree of n vertices and bring it home. After that they paint all the n its vertices, so that the i-th vertex gets color ci.
Now it's time for Tim... | instruction | 0 | 95,758 | 13 | 191,516 |
Yes | output | 1 | 95,758 | 13 | 191,517 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Each New Year Timofey and his friends cut down a tree of n vertices and bring it home. After that they paint all the n its vertices, so that the i-th vertex gets color ci.
Now it's time for Tim... | instruction | 0 | 95,759 | 13 | 191,518 |
No | output | 1 | 95,759 | 13 | 191,519 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Each New Year Timofey and his friends cut down a tree of n vertices and bring it home. After that they paint all the n its vertices, so that the i-th vertex gets color ci.
Now it's time for Tim... | instruction | 0 | 95,760 | 13 | 191,520 |
No | output | 1 | 95,760 | 13 | 191,521 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Each New Year Timofey and his friends cut down a tree of n vertices and bring it home. After that they paint all the n its vertices, so that the i-th vertex gets color ci.
Now it's time for Tim... | instruction | 0 | 95,761 | 13 | 191,522 |
No | output | 1 | 95,761 | 13 | 191,523 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Each New Year Timofey and his friends cut down a tree of n vertices and bring it home. After that they paint all the n its vertices, so that the i-th vertex gets color ci.
Now it's time for Tim... | instruction | 0 | 95,762 | 13 | 191,524 |
No | output | 1 | 95,762 | 13 | 191,525 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Danil decided to earn some money, so he had found a part-time job. The interview have went well, so now he is a light switcher.
Danil works in a rooted tree (undirected connected acyclic graph) with n vertices, vertex 1 is the root of the t... | instruction | 0 | 95,792 | 13 | 191,584 |
Tags: bitmasks, data structures, trees
Correct Solution:
```
# ------------------- fast io --------------------
import os
import sys
from io import BytesIO, IOBase
BUFSIZE = 8192
class FastIO(IOBase):
newlines = 0
def __init__(self, file):
self._fd = file.fileno()
self.buffer = BytesIO()... | output | 1 | 95,792 | 13 | 191,585 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Danil decided to earn some money, so he had found a part-time job. The interview have went well, so now he is a light switcher.
Danil works in a rooted tree (undirected connected acyclic graph) with n vertices, vertex 1 is the root of the t... | instruction | 0 | 95,793 | 13 | 191,586 |
Tags: bitmasks, data structures, trees
Correct Solution:
```
class LazySegTree:
def __init__(self, init_val, seg_ide, lazy_ide, f, g, h):
self.n = len(init_val)
self.num = 2**(self.n-1).bit_length()
self.seg_ide = seg_ide
self.lazy_ide = lazy_ide
self.f = f #(seg, seg) -> s... | output | 1 | 95,793 | 13 | 191,587 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Danil decided to earn some money, so he had found a part-time job. The interview have went well, so now he is a light switcher.
Danil works in a rooted tree (undirected connected acyclic graph)... | instruction | 0 | 95,794 | 13 | 191,588 |
No | output | 1 | 95,794 | 13 | 191,589 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Danil decided to earn some money, so he had found a part-time job. The interview have went well, so now he is a light switcher.
Danil works in a rooted tree (undirected connected acyclic graph)... | instruction | 0 | 95,795 | 13 | 191,590 |
No | output | 1 | 95,795 | 13 | 191,591 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Danil decided to earn some money, so he had found a part-time job. The interview have went well, so now he is a light switcher.
Danil works in a rooted tree (undirected connected acyclic graph)... | instruction | 0 | 95,796 | 13 | 191,592 |
No | output | 1 | 95,796 | 13 | 191,593 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Danil decided to earn some money, so he had found a part-time job. The interview have went well, so now he is a light switcher.
Danil works in a rooted tree (undirected connected acyclic graph)... | instruction | 0 | 95,797 | 13 | 191,594 |
No | output | 1 | 95,797 | 13 | 191,595 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Sasha is taking part in a programming competition. In one of the problems she should check if some rooted trees are isomorphic or not. She has never seen this problem before, but, being an experienced participant, she guessed that she should... | instruction | 0 | 95,798 | 13 | 191,596 |
Tags: constructive algorithms, trees
Correct Solution:
```
''' ===============================
-- @uthor : Kaleab Asfaw
-- Handle : Kaleab_Asfaw
-- Bio : High-School Student
==============================='''
# Fast IO
import sys
import os
from io import BytesIO, IOBase
BUFSIZE = 8192
class FastIO(I... | output | 1 | 95,798 | 13 | 191,597 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Sasha is taking part in a programming competition. In one of the problems she should check if some rooted trees are isomorphic or not. She has never seen this problem before, but, being an experienced participant, she guessed that she should... | instruction | 0 | 95,799 | 13 | 191,598 |
Tags: constructive algorithms, trees
Correct Solution:
```
#Abhigyan Khaund - syl
n = int(input())
a = list(map(int, input().split()))
ambi = 0
for i in range(1,len(a)):
if(a[i]>1 and a[i-1]>1):
ambi = 1
ans1 = ""
ans2 = ""
if(ambi == 0):
print ("perfect")
else:
print ("ambiguous")
ans1+="0 "
k = 0
s = sum(... | output | 1 | 95,799 | 13 | 191,599 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Sasha is taking part in a programming competition. In one of the problems she should check if some rooted trees are isomorphic or not. She has never seen this problem before, but, being an experienced participant, she guessed that she should... | instruction | 0 | 95,800 | 13 | 191,600 |
Tags: constructive algorithms, trees
Correct Solution:
```
import sys
#f = open('input', 'r')
f = sys.stdin
n = f.readline()
n = int(n)
cl = f.readline().split()
cl = [int(x) for x in cl]
c_index = 0
p1 = ['0']
p2 = ['0']
ambiguous = False
cur_index = 1
for i, c in enumerate(cl):
if i == 0:
continue
if i ... | output | 1 | 95,800 | 13 | 191,601 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Sasha is taking part in a programming competition. In one of the problems she should check if some rooted trees are isomorphic or not. She has never seen this problem before, but, being an experienced participant, she guessed that she should... | instruction | 0 | 95,801 | 13 | 191,602 |
Tags: constructive algorithms, trees
Correct Solution:
```
n = int(input())
fl = 1
a = [int(x) for x in input().split()]
for i in range(1,n+1):
if a[i] > 1 and a[i-1] > 1:
fl = 0
break
if fl == 1:
print("perfect")
else :
print("ambiguous")
print("0", end=" ")
cnt=1
x=1
fl=... | output | 1 | 95,801 | 13 | 191,603 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Sasha is taking part in a programming competition. In one of the problems she should check if some rooted trees are isomorphic or not. She has never seen this problem before, but, being an experienced participant, she guessed that she should... | instruction | 0 | 95,802 | 13 | 191,604 |
Tags: constructive algorithms, trees
Correct Solution:
```
def print_iso(nnodes, counter):
print("ambiguous")
final_tree1 = []
final_tree2 = []
c = 0
parent = 0
for n in nnodes:
if c != counter:
for i in range(0, n):
final_tree1.append(parent)
... | output | 1 | 95,802 | 13 | 191,605 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Sasha is taking part in a programming competition. In one of the problems she should check if some rooted trees are isomorphic or not. She has never seen this problem before, but, being an experienced participant, she guessed that she should... | instruction | 0 | 95,803 | 13 | 191,606 |
Tags: constructive algorithms, trees
Correct Solution:
```
n = int(input())
h = [int(i) for i in input().split()]
flag = 0
for i in range(n):
if h[i] >= 2 and h[i+1] >= 2:
flag = i
if flag:
a = []
c = 0
for i in range(n+1):
for j in range(h[i]):
a.append(c)
c += h[... | output | 1 | 95,803 | 13 | 191,607 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Sasha is taking part in a programming competition. In one of the problems she should check if some rooted trees are isomorphic or not. She has never seen this problem before, but, being an experienced participant, she guessed that she should... | instruction | 0 | 95,804 | 13 | 191,608 |
Tags: constructive algorithms, trees
Correct Solution:
```
h = int( input() )
nums = [int(x) for x in input().split()]
if not any([nums[i] > 1 and nums[i+1] > 1 for i in range(h)]):
print('perfect')
else:
print('ambiguous')
# tree 1
cur = 1
flag = False
print(0, end=' ')
for l in range(1, ... | output | 1 | 95,804 | 13 | 191,609 |
Provide tags and a correct Python 3 solution for this coding contest problem.
Sasha is taking part in a programming competition. In one of the problems she should check if some rooted trees are isomorphic or not. She has never seen this problem before, but, being an experienced participant, she guessed that she should... | instruction | 0 | 95,805 | 13 | 191,610 |
Tags: constructive algorithms, trees
Correct Solution:
```
h = int(input())
A = list(map(int,input().split()))
f = False
for i,a in enumerate(A):
if f and a != 1:
f = None
break
else:
f = a != 1
if f is not None:
print('perfect')
else:
T = []
for j,a in enumerate(A):
if j == i:
x = le... | output | 1 | 95,805 | 13 | 191,611 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Sasha is taking part in a programming competition. In one of the problems she should check if some rooted trees are isomorphic or not. She has never seen this problem before, but, being an exper... | instruction | 0 | 95,806 | 13 | 191,612 |
Yes | output | 1 | 95,806 | 13 | 191,613 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Sasha is taking part in a programming competition. In one of the problems she should check if some rooted trees are isomorphic or not. She has never seen this problem before, but, being an exper... | instruction | 0 | 95,807 | 13 | 191,614 |
Yes | output | 1 | 95,807 | 13 | 191,615 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Sasha is taking part in a programming competition. In one of the problems she should check if some rooted trees are isomorphic or not. She has never seen this problem before, but, being an exper... | instruction | 0 | 95,808 | 13 | 191,616 |
Yes | output | 1 | 95,808 | 13 | 191,617 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Sasha is taking part in a programming competition. In one of the problems she should check if some rooted trees are isomorphic or not. She has never seen this problem before, but, being an exper... | instruction | 0 | 95,809 | 13 | 191,618 |
Yes | output | 1 | 95,809 | 13 | 191,619 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Sasha is taking part in a programming competition. In one of the problems she should check if some rooted trees are isomorphic or not. She has never seen this problem before, but, being an exper... | instruction | 0 | 95,810 | 13 | 191,620 |
No | output | 1 | 95,810 | 13 | 191,621 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Sasha is taking part in a programming competition. In one of the problems she should check if some rooted trees are isomorphic or not. She has never seen this problem before, but, being an exper... | instruction | 0 | 95,811 | 13 | 191,622 |
No | output | 1 | 95,811 | 13 | 191,623 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Sasha is taking part in a programming competition. In one of the problems she should check if some rooted trees are isomorphic or not. She has never seen this problem before, but, being an exper... | instruction | 0 | 95,812 | 13 | 191,624 |
No | output | 1 | 95,812 | 13 | 191,625 |
Evaluate the correctness of the submitted Python 3 solution to the coding contest problem. Provide a "Yes" or "No" response.
Sasha is taking part in a programming competition. In one of the problems she should check if some rooted trees are isomorphic or not. She has never seen this problem before, but, being an exper... | instruction | 0 | 95,813 | 13 | 191,626 |
No | output | 1 | 95,813 | 13 | 191,627 |
Provide a correct Python 3 solution for this coding contest problem.
Given is an integer sequence of length N+1: A_0, A_1, A_2, \ldots, A_N. Is there a binary tree of depth N such that, for each d = 0, 1, \ldots, N, there are exactly A_d leaves at depth d? If such a tree exists, print the maximum possible number of ve... | instruction | 0 | 95,855 | 13 | 191,710 |
"Correct Solution:
```
n = int(input())
values = list(map(int, input().split()))
from itertools import accumulate
copy = values[:]
copy.reverse()
acc = list(accumulate(copy))
acc.reverse()
b = 1
total = 1
for i in range(n+1):
a = values[i]
bCandidate = b - a
if bCandidate < 0:
print(-1)
e... | output | 1 | 95,855 | 13 | 191,711 |
Provide a correct Python 3 solution for this coding contest problem.
Given is an integer sequence of length N+1: A_0, A_1, A_2, \ldots, A_N. Is there a binary tree of depth N such that, for each d = 0, 1, \ldots, N, there are exactly A_d leaves at depth d? If such a tree exists, print the maximum possible number of ve... | instruction | 0 | 95,856 | 13 | 191,712 |
"Correct Solution:
```
n = int(input())
a = list(map(int,input().split()))
b = [0 for i in range(n+1)]
leaf = sum(a)
if n == 0 and a[0] != 1:
print(-1)
exit()
b[0] = 1 - a[0]
leaf -= a[0]
ans = 1
for i in range(1,n+1):
kosu = min(b[i-1] * 2,leaf)
ans += kosu
b[i] = kosu - a[i]
if b[i] < 0:
... | output | 1 | 95,856 | 13 | 191,713 |
Provide a correct Python 3 solution for this coding contest problem.
Given is an integer sequence of length N+1: A_0, A_1, A_2, \ldots, A_N. Is there a binary tree of depth N such that, for each d = 0, 1, \ldots, N, there are exactly A_d leaves at depth d? If such a tree exists, print the maximum possible number of ve... | instruction | 0 | 95,857 | 13 | 191,714 |
"Correct Solution:
```
n=int(input())
a=list(map(int,input().split()))
if n==0:
if a[0]==1:print(1)
else:print(-1)
exit()
if a[0]:
exit(print(-1))
b=[1]
for i in range(1,n+1):
b.append(b[-1]*2-a[i])
b[-1]=a[-1]
for i in range(n,0,-1):
b[i-1]=min(b[i-1],b[i])
if not(b[i-1]<=b[i]<=2*b[i-1]):exit(print(-1))
... | output | 1 | 95,857 | 13 | 191,715 |
Provide a correct Python 3 solution for this coding contest problem.
Given is an integer sequence of length N+1: A_0, A_1, A_2, \ldots, A_N. Is there a binary tree of depth N such that, for each d = 0, 1, \ldots, N, there are exactly A_d leaves at depth d? If such a tree exists, print the maximum possible number of ve... | instruction | 0 | 95,858 | 13 | 191,716 |
"Correct Solution:
```
import sys
input = sys.stdin.readline
N = int(input())
A = list(map(int, input().split()))
leaf = sum(A)
ans = 0
node = 1
for i in range(N+1):
if A[i] > node or leaf == 0:
ans = -1
break
ans += node
leaf -= A[i]
node = min(2*(node-A[i]), leaf)
print(ans)
``` | output | 1 | 95,858 | 13 | 191,717 |
Provide a correct Python 3 solution for this coding contest problem.
Given is an integer sequence of length N+1: A_0, A_1, A_2, \ldots, A_N. Is there a binary tree of depth N such that, for each d = 0, 1, \ldots, N, there are exactly A_d leaves at depth d? If such a tree exists, print the maximum possible number of ve... | instruction | 0 | 95,859 | 13 | 191,718 |
"Correct Solution:
```
N = int(input())
*A, = map(int, input().split())
Asum = [a for a in A]
for i in range(N-1, -1, -1):
Asum[i] += Asum[i+1]
ans = 0
v = 1 # εγ«γͺγγι ηΉζ°
for i in range(N+1):
if v < A[i]:
ans = -1
break
ans += v
p = v-A[i]
if i < N:
v = min(Asum[i+1], 2*p)
... | output | 1 | 95,859 | 13 | 191,719 |
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