結果
| 問題 | No.367 ナイトの転身 |
| コンテスト | |
| ユーザー |
めうめう🎒
|
| 提出日時 | 2016-04-29 23:13:32 |
| 言語 | C++11 (gcc 15.2.0 + boost 1.89.0) |
| 結果 |
AC
|
| 実行時間 | 55 ms / 2,000 ms |
| コード長 | 1,881 bytes |
| 記録 | |
| コンパイル時間 | 570 ms |
| コンパイル使用メモリ | 106,428 KB |
| 実行使用メモリ | 6,400 KB |
| 最終ジャッジ日時 | 2026-04-20 12:38:40 |
| 合計ジャッジ時間 | 1,714 ms |
|
ジャッジサーバーID (参考情報) |
judge2_1 / judge3_1 |
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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:51:23: warning: 'gx' may be used uninitialized [-Wmaybe-uninitialized]
51 | if(nx == gx && ny == gy){
| ~~~^~~~~
main.cpp:24:23: note: 'gx' was declared here
24 | int h,w,sx,sy,gx,gy;
| ^~
main.cpp:51:35: warning: 'gy' may be used uninitialized [-Wmaybe-uninitialized]
51 | if(nx == gx && ny == gy){
| ~~~^~~~~
main.cpp:24:26: note: 'gy' was declared here
24 | int h,w,sx,sy,gx,gy;
| ^~
main.cpp:24:17: warning: 'sx' may be used uninitialized [-Wmaybe-uninitialized]
24 | int h,w,sx,sy,gx,gy;
| ^~
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 main.cpp:1:
In constructor 'constexpr std::pair<_T1, _T2>::pair(std::pair<_U1, _U2>&&) [with _U1 = int; _U2 = std::pair<int, std::pair<int, int> >; typename std::enable_if<(std::_PCC<((! std::is_same<_T1, _U1>::value) || (! std::is_same<_T2, _U2>::value)), _T1, _T2>::_MoveConstructiblePair<_U1, _U2>() && std::_PCC<((! std::is_same<_T1, _U1>::value) || (! std::is_same<_T2, _U2>::value)), _T1, _T2>::_ImplicitlyMoveConvertiblePair<_U1, _U2>()), bool>::type <anonymous> = true; _T1 = bool; _T2 = std::pair<int, std::pair<int, int> >]',
inlined from 'int main()' at main.cpp:44:20:
/home/linuxbrew/.linuxbrew/Cellar/gcc/15.2.0_1/include/c++/15/bits/stl_pair.h:924:11: warning: 'sy' may be used uninitialized [-Wmaybe-uninitialized]
924 | second(std::forward<_U2>(__p.second))
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
main.cpp: In function 'int main()':
main.cpp:24:20: note: 'sy' was declared here
24 | int h,w,sx,sy,gx,gy;
| ^~
ソースコード
#include <algorithm>
#include <cstdio>
#include <iostream>
#include <map>
#include <math.h>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <vector>
using namespace std;
#define ll long long
#define INF (1 << 30)
#define INFLL (1LL << 60)
const int DIRX1[8] = {1,2,2,1,-1,-2,-2,-1};
const int DIRY1[8] = {2,1,-1,-2,-2,-1,1,2};
const int DIRX2[4] = {1,1,-1,-1};
const int DIRY2[4] = {-1,1,-1,1};
int main() {
int h,w,sx,sy,gx,gy;
char hyo[510][510];
cin >> h >> w;
for(int i = 0;i < h;i++){
for(int j = 0;j < w;j++){
cin >> hyo[j][i];
if(hyo[j][i] == 'S'){
sx = j;
sy = i;
}else if(hyo[j][i] == 'G'){
gx = j;
gy = i;
}
}
}
//0はナイト
int ans = INF;
bool flag = true;
bool used[510][510][2] = {};
queue<pair<bool,pair<int,pair<int,int> > > > que;
que.push(make_pair(0,make_pair(0,make_pair(sx,sy))));
while(que.size()){
bool type = que.front().first;
int how = que.front().second.first,nx = que.front().second.second.first,ny = que.front().second.second.second;
que.pop();
if(used[nx][ny][type]) continue;
used[nx][ny][type] = true;
if(nx == gx && ny == gy){
cout << how << endl;
flag = false;
break;
}
if(type){
for(int i = 0;i < 4;i++){
int tx = nx + DIRX2[i],ty = ny + DIRY2[i];
if(tx < 0 || tx >= w || ty < 0 || ty >= h) continue;
if(hyo[tx][ty] == 'R') que.push(make_pair(0,make_pair(how + 1,make_pair(tx,ty))));
else que.push(make_pair(1,make_pair(how + 1,make_pair(tx,ty))));
}
}else{
for(int i = 0;i < 8;i++){
int tx = nx + DIRX1[i],ty = ny + DIRY1[i];
if(tx < 0 || tx >= w || ty < 0 || ty >= h) continue;
if(hyo[tx][ty] == 'R') que.push(make_pair(1,make_pair(how + 1,make_pair(tx,ty))));
else que.push(make_pair(0,make_pair(how + 1,make_pair(tx,ty))));
}
}
}
if(flag) cout << -1 << endl;
return 0;
}
めうめう🎒