結果
問題 | No.367 ナイトの転身 |
ユーザー | fine |
提出日時 | 2016-04-30 01:11:20 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 46 ms / 2,000 ms |
コード長 | 1,855 bytes |
コンパイル時間 | 1,649 ms |
コンパイル使用メモリ | 174,860 KB |
実行使用メモリ | 6,820 KB |
最終ジャッジ日時 | 2024-10-11 00:21:52 |
合計ジャッジ時間 | 2,629 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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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
6,820 KB |
testcase_01 | AC | 2 ms
6,820 KB |
testcase_02 | AC | 2 ms
6,816 KB |
testcase_03 | AC | 2 ms
6,816 KB |
testcase_04 | AC | 2 ms
6,820 KB |
testcase_05 | AC | 2 ms
6,816 KB |
testcase_06 | AC | 2 ms
6,816 KB |
testcase_07 | AC | 2 ms
6,816 KB |
testcase_08 | AC | 2 ms
6,820 KB |
testcase_09 | AC | 2 ms
6,816 KB |
testcase_10 | AC | 30 ms
6,820 KB |
testcase_11 | AC | 46 ms
6,820 KB |
testcase_12 | AC | 5 ms
6,820 KB |
testcase_13 | AC | 6 ms
6,816 KB |
testcase_14 | AC | 14 ms
6,816 KB |
testcase_15 | AC | 2 ms
6,820 KB |
testcase_16 | AC | 13 ms
6,816 KB |
testcase_17 | AC | 4 ms
6,820 KB |
testcase_18 | AC | 4 ms
6,820 KB |
testcase_19 | AC | 5 ms
6,820 KB |
testcase_20 | AC | 2 ms
6,820 KB |
testcase_21 | AC | 4 ms
6,816 KB |
testcase_22 | AC | 2 ms
6,820 KB |
testcase_23 | AC | 1 ms
6,816 KB |
testcase_24 | AC | 2 ms
6,816 KB |
testcase_25 | AC | 2 ms
6,816 KB |
testcase_26 | AC | 2 ms
6,820 KB |
コンパイルメッセージ
main.cpp: In function 'int main()': main.cpp:48:23: warning: 'gy' may be used uninitialized [-Wmaybe-uninitialized] 48 | if (m.x == gx && m.y == gy) { | ~~~~~~~~~~^~~~~~~~~~~~ main.cpp:29:21: note: 'gy' was declared here 29 | int sx, sy, gx, gy; | ^~ main.cpp:48:9: warning: 'gx' may be used uninitialized [-Wmaybe-uninitialized] 48 | if (m.x == gx && m.y == gy) { | ^~ main.cpp:29:17: note: 'gx' was declared here 29 | int sx, sy, gx, gy; | ^~ In constructor 'Move::Move(int, int, int, int)', inlined from 'int main()' at main.cpp:43:12: main.cpp:7:57: warning: 'sy' may be used uninitialized [-Wmaybe-uninitialized] 7 | Move(int x, int y, int count, int isknight) : x(x), y(y), count(count), isknight(isknight) {} | ^~~~ main.cpp: In function 'int main()': main.cpp:29:13: note: 'sy' was declared here 29 | int sx, sy, gx, gy; | ^~ In constructor 'Move::Move(int, int, int, int)', inlined from 'int main()' at main.cpp:43:12: main.cpp:7:51: warning: 'sx' may be used uninitialized [-Wmaybe-uninitialized] 7 | Move(int x, int y, int count, int isknight) : x(x), y(y), count(count), isknight(isknight) {} | ^~~~ main.cpp: In function 'int main()': main.cpp:29:9: note: 'sx' was declared here 29 | int sx, sy, gx, gy; | ^~
ソースコード
#include <bits/stdc++.h> using namespace std; struct Move { int x, y, count, isknight; Move(int x, int y, int count, int isknight) : x(x), y(y), count(count), isknight(isknight) {} }; int h, w; bool judge_inside(int x, int y) { return x >= 0 && x < w && y >= 0 && y < h; } int dx[] = {2, 2, 1, 1, -1, -1, -2, -2}; int dy[] = {1, -1, 2, -2, 2, -2, 1, -1}; int dx2[] = {1, -1, -1, 1}; int dy2[] = {1, 1, -1, -1}; int main() { cin.tie(0); ios::sync_with_stdio(false); cin >> h >> w; bool memo[500][500][2]; vector<string> str(h); for (int i = 0; i < h; i++) cin >> str[i]; int sx, sy, gx, gy; for (int i = 0; i < h; i++) { for (int j = 0; j < w; j++) { if (str[i][j] == 'S') { sy = i; sx = j; } else if (str[i][j] == 'G') { gy = i; gx = j; } for (int k = 0; k < 2; k++) memo[i][j][k] = false; } } queue<Move> q; q.push(Move(sx, sy, 0, 1)); int ans = -1; while(!q.empty()) { Move m = q.front(); q.pop(); if (m.x == gx && m.y == gy) { ans = m.count; break; } if (memo[m.y][m.x][m.isknight]) continue; memo[m.y][m.x][m.isknight] = true; if (str[m.y][m.x] == 'R') m.isknight ^= 1; if (m.isknight) { for (int i = 0; i < 8; i++) { if (!judge_inside(m.x + dx[i], m.y + dy[i])) continue; q.push(Move(m.x + dx[i], m.y + dy[i], m.count + 1, 1)); } } else { for (int i = 0; i < 4; i++) { if (!judge_inside(m.x + dx2[i], m.y + dy2[i])) continue; q.push(Move(m.x + dx2[i], m.y + dy2[i], m.count + 1, 0)); } } } cout << ans << "\n"; return 0; }