結果
問題 | No.367 ナイトの転身 |
ユーザー |
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提出日時 | 2016-04-29 22:38:30 |
言語 | C++11(廃止可能性あり) (gcc 13.3.0) |
結果 |
AC
|
実行時間 | 54 ms / 2,000 ms |
コード長 | 1,795 bytes |
コンパイル時間 | 827 ms |
コンパイル使用メモリ | 93,428 KB |
実行使用メモリ | 17,408 KB |
最終ジャッジ日時 | 2024-10-04 18:19:23 |
合計ジャッジ時間 | 1,965 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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ファイルパターン | 結果 |
---|---|
other | AC * 27 |
コンパイルメッセージ
main.cpp: In function ‘int main()’: main.cpp:73:45: warning: ‘tx’ may be used uninitialized in this function [-Wmaybe-uninitialized] 73 | int ans = min(d[ty][tx][0], d[ty][tx][1]); | ^ main.cpp:73:41: warning: ‘ty’ may be used uninitialized in this function [-Wmaybe-uninitialized] 73 | int ans = min(d[ty][tx][0], d[ty][tx][1]); | ^ main.cpp:40:23: warning: ‘sx’ may be used uninitialized in this function [-Wmaybe-uninitialized] 40 | return (y * W + x) * 2 + t; | ~~~~~~~^~~~ main.cpp:46:17: note: ‘sx’ was declared here 46 | int sy, sx, ty, tx; | ^~ main.cpp:40:19: warning: ‘sy’ may be used uninitialized in this function [-Wmaybe-uninitialized] 40 | return (y * W + x) * 2 + t; | ~~^~~ main.cpp:46:13: note: ‘sy’ was declared here 46 | int sy, sx, ty, tx; | ^~
ソースコード
#define _USE_MATH_DEFINES#include <algorithm>#include <cstdio>#include <functional>#include <iostream>#include <cfloat>#include <climits>#include <cstdlib>#include <cstring>#include <cmath>#include <map>#include <queue>#include <set>#include <sstream>#include <stack>#include <string>#include <time.h>#include <vector>using namespace std;typedef long long ll;typedef unsigned long long ull;typedef pair<int, int> i_i;typedef pair<ll, int> ll_i;typedef pair<double, int> d_i;typedef pair<ll, ll> ll_ll;typedef pair<double, double> d_d;struct edge { int u, v; ll w; };ll MOD = 1000000007;ll _MOD = 1000000009;double EPS = 1e-10;int dy[2][8] = {{-1, -2, -2, -1, 1, 2, 2, 1}, {-1, -1, 1, 1, -1, -1, 1, 1}};int dx[2][8] = {{-2, -1, 1, 2, 2, 1, -1, -2}, {-1, 1, 1, -1, -1, 1, 1, -1}};int H, W;int f(int y, int x, int t) {return (y * W + x) * 2 + t;}int main() {cin >> H >> W;vector<string> a(H);int sy, sx, ty, tx;for (int y = 0; y < H; y++) {cin >> a[y];for (int x = 0; x < W; x++) {if (a[y][x] == 'S') sy = y, sx = x, a[y][x] = '.';if (a[y][x] == 'G') ty = y, tx = x, a[y][x] = '.';}}vector<vector<vector<int> > > d(H, vector<vector<int> >(W, vector<int>(2, INT_MAX)));d[sy][sx][0] = 0;queue<int> q;q.push(f(sy, sx, 0));while (!q.empty()) {int z = q.front(); q.pop();int y = z / 2 / W, x = z / 2 % W, t = z % 2;for (int k = 0; k < 8; k++) {int _y = y + dy[t][k], _x = x + dx[t][k];if (_y >= 0 && _y < H && _x >= 0 && _x < W) {int _t = t;if (a[_y][_x] == 'R') _t ^= 1;if (d[_y][_x][_t] > d[y][x][t] + 1) {d[_y][_x][_t] = d[y][x][t] + 1;q.push(f(_y, _x, _t));}}}}int ans = min(d[ty][tx][0], d[ty][tx][1]);if (ans == INT_MAX) ans = -1;cout << ans << endl;}