結果
| 問題 |
No.367 ナイトの転身
|
| コンテスト | |
| ユーザー |
sntea
|
| 提出日時 | 2016-05-03 02:16:56 |
| 言語 | C++11(廃止可能性あり) (gcc 13.3.0) |
| 結果 |
MLE
|
| 実行時間 | - |
| コード長 | 2,630 bytes |
| コンパイル時間 | 1,579 ms |
| コンパイル使用メモリ | 178,804 KB |
| 実行使用メモリ | 823,428 KB |
| 最終ジャッジ日時 | 2024-10-05 02:49:54 |
| 合計ジャッジ時間 | 3,933 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 10 MLE * 1 -- * 16 |
コンパイルメッセージ
main.cpp: In function ‘int main()’:
main.cpp:114:34: warning: ‘gy’ may be used uninitialized in this function [-Wmaybe-uninitialized]
114 | if(b == gx and c == gy){
| ~~^~~~~
main.cpp:114:22: warning: ‘gx’ may be used uninitialized in this function [-Wmaybe-uninitialized]
114 | if(b == gx and c == gy){
| ~~^~~~~
ソースコード
#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define PB push_back
#define ALL(a) (a).begin(),(a).end()
#define SZ(a) int((a).size())
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define RFOR(i,a,b) for (int i=(b)-1;i>=(a);i--)
#define REP(i,n) FOR(i,0,n)
#define RREP(i,n) for (int i=(n)-1;i>=0;i--)
#define RBP(i,a) for(auto& i : a)
#ifdef LOCAL111
#define DEBUG(x) cout<<#x<<": "<<(x)<<endl
#else
#define DEBUG(x)
#endif
#define F first
#define S second
#define SNP string::npos
#define WRC(hoge) cout << "Case #" << (hoge)+1 << ": "
#define INF 1e8
typedef pair<int,int> P;
typedef long long int LL;
typedef unsigned long long ULL;
typedef pair<LL,LL> LP;
void ios_init(){ ios::sync_with_stdio(false); cin.tie(0);
//cout.setf(ios::fixed);
//cout.precision(12);
}
int dx[] = {0,1,0,-1};
int dy[] = {0,-1,0,1};
int ddx[] = {1,-1,1,-1};
int ddy[] = {-1,1,1,-1};
int main()
{
ios_init();
int h,w;
cin >> h >> w;
vector<string> s(h);
REP(i,h){
cin >> s[i];
}
int sx, sy, gx, gy;
REP(i,h){
REP(j,w){
if(s[i][j] == 'S'){
sx = i;
sy = j;
}else if(s[i][j] == 'G'){
gx = i;
gy = j;
}
}
}
vector<tuple<bool,int,int>> g[2][h][w];
REP(i,h){
REP(j,w){
REP(k,4){
int dx = ddx[k], dy = ddy[k];
// cout << endl;
DEBUG(i); DEBUG(j);
int ni = i+dx, nj = j+dy*2;
DEBUG(ni); DEBUG(nj);
if(0 <= ni and ni < h and 0 <= nj and nj < w){
if(s[ni][nj] != 'R'){
g[0][i][j].push_back(make_tuple(0,ni,nj));
}else{
g[0][i][j].push_back(make_tuple(1,ni,nj));
}
}
ni = i+2*dx;
nj = j+dy;
DEBUG(ni); DEBUG(nj);
if(0 <= ni and ni < h and 0 <= nj and nj < w){
if(s[ni][nj] != 'R'){
g[0][i][j].push_back(make_tuple(0,ni,nj));
}else{
g[0][i][j].push_back(make_tuple(1,ni,nj));
}
}
}
}
}
REP(i,h){
REP(j,w){
REP(k,4){
int ni = i+dx[k], nj = j+dy[k];
if(0 <= ni and ni < h and 0 <= nj and nj < w){
if(s[ni][nj] != 'R'){
g[1][i][j].push_back(make_tuple(1,ni,nj));
}else{
g[1][i][j].push_back(make_tuple(0,ni,nj));
}
}
}
}
}
bool gf[2][h][w];
fill(gf[0][0],gf[2][0],false);
queue<tuple<bool,int,int,int>> qu;
qu.push(make_tuple(0,sx,sy,0));
while(!qu.empty()){
auto t = qu.front();
qu.pop();
int a = get<0>(t);
int b = get<1>(t);
int c = get<2>(t);
if(b == gx and c == gy){
cout << get<3>(t) << endl;
return 0;
}
gf[a][b][c] = true;
RBP(tup,g[a][b][c]){
if(!gf[get<0>(tup)][get<1>(tup)][get<2>(tup)]){
qu.push(tuple_cat(tup,make_tuple(get<3>(t)+1)));
}
}
}
cout << -1 << endl;
return 0;
}
sntea