結果
| 問題 | No.157 2つの空洞 |
| コンテスト | |
| ユーザー |
iqueue02
|
| 提出日時 | 2019-11-04 17:43:48 |
| 言語 | C++14 (gcc 15.2.0 + boost 1.89.0) |
| 結果 |
AC
|
| 実行時間 | 2 ms / 2,000 ms |
| コード長 | 1,130 bytes |
| 記録 | |
| コンパイル時間 | 1,134 ms |
| コンパイル使用メモリ | 192,720 KB |
| 実行使用メモリ | 6,400 KB |
| 最終ジャッジ日時 | 2026-04-04 15:51:11 |
| 合計ジャッジ時間 | 1,784 ms |
|
ジャッジサーバーID (参考情報) |
judge5_1 / judge3_0 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 16 |
コンパイルメッセージ
In file included from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/bits/stl_algobase.h:64,
from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/algorithm:62,
from /home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/x86_64-pc-linux-gnu/bits/stdc++.h:53,
from main.cpp:1:
In constructor 'constexpr std::pair<_T1, _T2>::pair(_U1&&, _U2&&) [with _U1 = int&; _U2 = int&; typename std::enable_if<(std::_PCC<true, _T1, _T2>::_MoveConstructiblePair<_U1, _U2>() && std::_PCC<true, _T1, _T2>::_ImplicitlyMoveConvertiblePair<_U1, _U2>()), bool>::type <anonymous> = true; _T1 = int; _T2 = int]',
inlined from 'int main()' at main.cpp:25:17:
/home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/bits/stl_pair.h:902:11: warning: 'sy' may be used uninitialized [-Wmaybe-uninitialized]
902 | : first(std::forward<_U1>(__x)), second(std::forward<_U2>(__y))
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
main.cpp: In function 'int main()':
main.cpp:17:7: note: 'sy' was declared here
17 | int sy, sx;
| ^~
In constructor 'constexpr std::pair<_T1, _T2>::pair(_U1&&, _U2&&) [with _U1 = int&; _U2 = int&; typename std::enable_if<(std::_PCC<true, _T1, _T2>::_MoveConstructiblePair<_U1, _U2>() && std::_PCC<true, _T1, _T2>::_ImplicitlyMoveConvertiblePair<_U1, _U2>()), bool>::type <anonymous> = true; _T1 = int; _T2 = int]',
inlined from 'int main()' at main.cpp:25:17:
/home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/bits/stl_pair.h:902:42: warning: 'sx' may be used uninitialized [-Wmaybe-uninitialized]
902 | : first(std::forward<_U1>(__x)), second(std::forward<_U2>(__y))
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
main.cpp: In function 'int main()':
main.cpp:17:11: note: 'sx' was declared here
17 | int sy, sx;
| ^~
ソースコード
#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i = 0; i < (n);i++)
#define sz(x) int(x.size())
typedef long long ll;
typedef pair<int,int> P;
const int INF = 1e9;
int dy[] = {1,0,-1,0};
int dx[] = {0,1,0,-1};
int main(){
int h, w;
cin >> w >> h;
vector<vector<char>> g(h,vector<char>(w));
int sy, sx;
rep(i,h) rep(j,w) {
cin >> g[i][j];
if (g[i][j] == '.') sy = i, sx = j;
}
vector<vector<int>> dist(h,vector<int>(w,INF));
int res = INF;
deque<P> deq;
deq.push_front({sy,sx});
dist[sy][sx] = 0;
while (!deq.empty()) {
P p = deq.front(); deq.pop_front();
rep(i,4) {
int ny = p.first + dy[i];
int nx = p.second + dx[i];
if (ny < 0 || nx < 0 || nx >= w-1 || ny >= h-1) continue;
if (dist[ny][nx] != INF) continue;
if (g[ny][nx] == '.') {
if (g[p.first][p.second] == '#') res = min(res,dist[p.first][p.second]);
dist[ny][nx] = 0;
deq.push_front({ny,nx});
} else {
dist[ny][nx] = dist[p.first][p.second] + 1;
deq.push_back({ny,nx});
}
}
}
cout << res << endl;
return 0;
}
iqueue02