結果
問題 | No.157 2つの空洞 |
ユーザー | kei |
提出日時 | 2018-08-26 02:00:19 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 2 ms / 2,000 ms |
コード長 | 2,843 bytes |
コンパイル時間 | 1,844 ms |
コンパイル使用メモリ | 183,396 KB |
実行使用メモリ | 5,376 KB |
最終ジャッジ日時 | 2024-06-27 13:08:41 |
合計ジャッジ時間 | 2,644 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge2 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 2 ms
5,376 KB |
testcase_04 | AC | 2 ms
5,376 KB |
testcase_05 | AC | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 1 ms
5,376 KB |
testcase_09 | AC | 2 ms
5,376 KB |
testcase_10 | AC | 2 ms
5,376 KB |
testcase_11 | AC | 2 ms
5,376 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 1 ms
5,376 KB |
testcase_14 | AC | 2 ms
5,376 KB |
testcase_15 | AC | 2 ms
5,376 KB |
testcase_16 | AC | 2 ms
5,376 KB |
testcase_17 | AC | 2 ms
5,376 KB |
testcase_18 | AC | 1 ms
5,376 KB |
testcase_19 | AC | 2 ms
5,376 KB |
ソースコード
#include "bits/stdc++.h" using namespace std; typedef long long ll; typedef pair<int, int> pii; typedef pair<ll, ll> pll; const int INF = 1e9; const ll LINF = 1e18; template<class S,class T> ostream& operator << (ostream& out,const pair<S,T>& o){ out << "(" << o.first << "," << o.second << ")"; return out; } template<class T> ostream& operator << (ostream& out,const vector<T> V){ for(int i = 0; i < V.size(); i++){ out << V[i]; if(i!=V.size()-1) out << " ";} return out; } template<class T> ostream& operator << (ostream& out,const vector<vector<T> > Mat){ for(int i = 0; i < Mat.size(); i++) { if(i != 0) out << endl; out << Mat[i];} return out; } template<class S,class T> ostream& operator << (ostream& out,const map<S,T> mp){ out << "{ "; for(auto it = mp.begin(); it != mp.end(); it++){ out << it->first << ":" << it->second; if(mp.size()-1 != distance(mp.begin(),it)) out << ", "; } out << " }"; return out; } /* <url:https://yukicoder.me/problems/no/157> 問題文============================================================ ================================================================= 解説============================================================= ================================================================ */ int d[4] = {1,0,-1,0}; void Fill(int h,int w,vector<vector<char>>& C,char k){ queue<pii> q; q.push({h,w}); while(q.size()){ int i,j; tie(i,j) = q.front(); q.pop(); if(C[i][j] != '.') continue; C[i][j] = k; for(int dir = 0; dir < 4; dir++){ q.push({i+d[dir],j+d[dir^1]}); } } } ll solve(){ int W,H; cin >> W >> H; vector<vector<char>> C(H,vector<char>(W)); for(auto& vec:C) for(auto& in:vec) cin >> in; char keyword = 'S'; for(int i = 0; i < H;i++){ for(int j = 0; j < W;j++){ if(C[i][j] == '.'){ Fill(i,j,C,keyword); if(keyword == 'S') keyword = 'G'; } } } vector<vector<int>> dist(H,vector<int>(W,INF)); queue<pii> q; for(int i = 0; i < H;i++) for(int j = 0; j < W;j++){ if(C[i][j] == 'S'){ dist[i][j] = 0; q.push({i,j}); } } while(q.size()){ int h,w; tie(h,w) = q.front(); q.pop(); for(int k = 0; k < 4;k++){ int nh = h + d[k],nw = w + d[k^1]; if(nh <= 0 || nh >= H-1 || nw <= 0 || nw >= W-1)continue; if(dist[nh][nw] > dist[h][w] + 1){ dist[nh][nw] = dist[h][w] + 1; q.push({nh,nw}); } } } int res = INF; for(int i = 0; i < H;i++) for(int j = 0; j < W;j++){ if(C[i][j] == 'G') res = min(res,dist[i][j]-1); } return res; } int main(void) { cin.tie(0); ios_base::sync_with_stdio(false); cout << solve() << endl; return 0; }