結果
| 問題 | No.977 アリス仕掛けの摩天楼 |
| コンテスト | |
| ユーザー |
trineutron
|
| 提出日時 | 2020-02-04 14:21:26 |
| 言語 | C++14 (gcc 15.2.0 + boost 1.89.0) |
| 結果 |
RE
|
| 実行時間 | - |
| コード長 | 709 bytes |
| 記録 | |
| コンパイル時間 | 1,019 ms |
| コンパイル使用メモリ | 187,360 KB |
| 実行使用メモリ | 1,302,400 KB |
| 最終ジャッジ日時 | 2026-04-09 14:16:55 |
| 合計ジャッジ時間 | 19,021 ms |
|
ジャッジサーバーID (参考情報) |
judge1_0 / judge2_0 |
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| ファイルパターン | 結果 |
|---|---|
| other | RE * 13 TLE * 5 MLE * 2 -- * 6 |
コンパイルメッセージ
main.cpp: In function 'int main()':
main.cpp:19:14: warning: 'u' may be used uninitialized [-Wmaybe-uninitialized]
19 | to.at(u).push_back(v);
| ~~~~~^~~
main.cpp:18:13: note: 'u' declared here
18 | int u, v;
| ^
In file included from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/x86_64-pc-linux-gnu/bits/c++allocator.h:33,
from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/bits/allocator.h:46,
from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/string:45,
from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/bitset:54,
from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/x86_64-pc-linux-gnu/bits/stdc++.h:54,
from main.cpp:1:
In member function 'void std::__new_allocator<_Tp>::construct(_Up*, _Args&& ...) [with _Up = int; _Args = {const int&}; _Tp = int]',
inlined from 'static void std::allocator_traits<std::allocator<_CharT> >::construct(allocator_type&, _Up*, _Args&& ...) [with _Up = int; _Args = {const int&}; _Tp = int]' at /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/bits/alloc_traits.h:674:17,
inlined from 'void std::vector<_Tp, _Alloc>::push_back(const value_type&) [with _Tp = int; _Alloc = std::allocator<int>]' at /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/bits/stl_vector.h:1421:30,
inlined from 'int main()' at main.cpp:19:27:
/home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/bits/new_allocator.h:191:11: warning: 'v' may be used uninitialized [-Wmaybe-uninitialized]
191 | { ::new((void *)__p) _Up(std::forward<_Args>(__args)...); }
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
main.cpp: In function 'int main()':
main.cpp:18:16: note: 'v' declared here
18 | int u, v;
| ^
In file included from /home/linuxbrew/.linuxbrew/Cellar/
ソースコード
#include <bits/stdc++.h>
using namespace std;
bool dfs(const vector<vector<int>> &to, vector<bool> &isvisited, int index, int prev) {
for (int next : to.at(index)) {
if (next == prev) continue;
if (isvisited.at(next)) return false;
if (dfs(to, isvisited, next, index) == false) return false;
}
return true;
}
int main() {
int n;
cin >> n;
vector<vector<int>> to(n, vector<int>(n));
for (int i = 0; i < n - 1; i++) {
int u, v;
to.at(u).push_back(v);
to.at(v).push_back(u);
}
vector<bool> isvisited(n);
if (dfs(to, isvisited, 0, -1)) {
cout << "Bob" << endl;
} else {
cout << "Alice" << endl;
}
}
trineutron