結果
問題 | No.367 ナイトの転身 |
ユーザー | kei |
提出日時 | 2018-11-12 22:54:33 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 28 ms / 2,000 ms |
コード長 | 2,901 bytes |
コンパイル時間 | 2,095 ms |
コンパイル使用メモリ | 188,176 KB |
実行使用メモリ | 6,400 KB |
最終ジャッジ日時 | 2024-06-06 16:10:31 |
合計ジャッジ時間 | 3,737 ms |
ジャッジサーバーID (参考情報) |
judge5 / 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 | 1 ms
5,376 KB |
testcase_04 | AC | 1 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 | 2 ms
5,376 KB |
testcase_09 | AC | 1 ms
5,376 KB |
testcase_10 | AC | 18 ms
6,400 KB |
testcase_11 | AC | 28 ms
6,400 KB |
testcase_12 | AC | 21 ms
5,376 KB |
testcase_13 | AC | 12 ms
5,376 KB |
testcase_14 | AC | 18 ms
5,376 KB |
testcase_15 | AC | 3 ms
5,376 KB |
testcase_16 | AC | 17 ms
5,376 KB |
testcase_17 | AC | 3 ms
5,376 KB |
testcase_18 | AC | 5 ms
5,376 KB |
testcase_19 | AC | 6 ms
5,376 KB |
testcase_20 | AC | 3 ms
5,376 KB |
testcase_21 | AC | 7 ms
5,376 KB |
testcase_22 | AC | 2 ms
5,376 KB |
testcase_23 | AC | 2 ms
5,376 KB |
testcase_24 | AC | 2 ms
5,376 KB |
testcase_25 | AC | 2 ms
5,376 KB |
testcase_26 | 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; inline ll gcd(ll a, ll b) { return b ? gcd(b, a%b) : a; } inline ll lcm(ll a, ll b) { return a / gcd(a, b)*b; } 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/367> 問題文============================================================ ================================================================= 解説============================================================= ================================================================ */ vector<vector<int>> dx{ {1,2,2,1,-1,-2,-2,-1}, {1,1,-1,-1} }; vector<vector<int>> dy{ {-2,-1,1,2,2,1,-1,-2}, {-1,1,1,-1} }; ll solve(){ ll res = INF; int H,W; cin >> H >> W; vector<vector<char>> masu(H,vector<char>(W)); pii S,G; for(int i = 0; i < H;i++){ for(int j = 0; j < W;j++){ cin >> masu[i][j]; if(masu[i][j] == 'S'){ S = {i,j}; masu[i][j] = '.';} if(masu[i][j] == 'G'){ G = {i,j}; masu[i][j] = '.';} } } vector<vector<vector<int>>> dist(2,vector<vector<int>>(H,vector<int>(W,INF))); dist[0][S.first][S.second] = 0; using Items = tuple<int,int,int>; queue<Items> q; q.push(Items(0,S.first,S.second)); while(q.size()){ int state,y,x; tie(state,y,x) = q.front(); q.pop(); for(int i = 0; i < dx[state].size(); i++){ int ny = y + dy[state][i]; int nx = x + dx[state][i]; if(ny < 0 || nx < 0 || ny >= H || nx >= W) continue; int next_state = state; if(masu[ny][nx] == 'R') next_state = !next_state; if(dist[next_state][ny][nx] > dist[state][y][x] + 1){ dist[next_state][ny][nx] = dist[state][y][x] + 1; q.push(Items(next_state,ny,nx)); } } } res = min(dist[0][G.first][G.second],dist[1][G.first][G.second]); if(res == INF) return -1; return res; } int main(void) { cin.tie(0); ios_base::sync_with_stdio(false); cout << solve() << endl; return 0; }