結果
| 問題 |
No.157 2つの空洞
|
| コンテスト | |
| ユーザー |
Gyuuto
|
| 提出日時 | 2015-11-25 11:56:40 |
| 言語 | C++11(廃止可能性あり) (gcc 13.3.0) |
| 結果 |
AC
|
| 実行時間 | 2 ms / 2,000 ms |
| コード長 | 2,901 bytes |
| コンパイル時間 | 785 ms |
| コンパイル使用メモリ | 94,708 KB |
| 実行使用メモリ | 6,944 KB |
| 最終ジャッジ日時 | 2024-09-13 17:23:40 |
| 合計ジャッジ時間 | 1,586 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 16 |
ソースコード
// Standard I/O
#include <iostream>
#include <sstream>
#include <cstdio>
// Standard Library
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <cmath>
// Template Class
#include <complex>
#include <string>
#include <vector>
#include <list>
#include <set>
#include <map>
#include <queue>
#include <stack>
// Container Control
#include <algorithm>
using namespace std;
#define rep( i, n ) for( int i = 0; i < n; ++i )
#define irep( i, n ) for( int i = n-1; i >= 0; --i )
#define reep( i, s, n ) for ( int i = s; i < n; ++i )
#define ireep( i, n, s ) for ( int i = n-1; i >= s; --i )
#define foreach(itr, x) for( typeof(x.begin()) itr = x.begin(); itr != x.end(); ++itr)
#define mp( a, b ) make_pair( a, b )
#define pb( a ) push_back( a )
#define all( v ) v.begin(), v.end()
#define fs first
#define sc second
#define vc vector
// for visualizer.html
double SCALE = 1.0;
double OFFSET_X = 0.0;
double OFFSET_Y = 0.0;
#define LINE(x,y,a,b) cerr << "line(" << SCALE*(x) + OFFSET_X << "," \
<< SCALE*(y) + OFFSET_Y << "," \
<< SCALE*(a) + OFFSET_X << "," \
<< SCALE*(b) + OFFSET_Y << ")" << endl;
#define CIRCLE(x,y,r) cerr << "circle(" << SCALE*(x) + OFFSET_X << "," \
<< SCALE*(y) + OFFSET_Y << "," \
<< SCALE*(r) << ")" << endl;
typedef long long ll;
typedef complex<double> Point;
typedef pair<int, int> pii;
typedef pair<int, pii> ipii;
typedef vector<int> vi;
typedef vector<double> vd;
typedef vector< vector<int> > vii;
typedef vector< vector<double> > vdd;
typedef vector<int>::iterator vi_itr;
const int IINF = 1 << 28;
const double INF = 1e30;
const double EPS = 1e-10;
const double PI = acos(-1.0);
// Direction : L U R D
const int dx[] = { -1, 0, 1, 0};
const int dy[] = { 0, -1, 0, 1 };
int W, H;
char field[20][20];
void func ( int x, int y, char c )
{
field[y][x] = c;
rep(i, 4){
int ny = y + dy[i];
int nx = x + dx[i];
if( ny < 0 || nx < 0 || ny >= H || nx >= W ) continue;
if( field[ny][nx] != '.' ) continue;
func( nx, ny, c );
}
}
int main()
{
cin >> W >> H;
rep(i, H) rep(j, W) cin >> field[i][j];
char c = '1';
rep(i, H) rep(j, W) if( field[i][j] == '.' ){
func(j, i, c);
++c;
}
typedef tuple<int, int, int> node;
priority_queue<node, vector<node>, greater<node>> que;
int used[20][20];
rep(i, H) rep(j, W) used[i][j] = IINF;
rep(i, H) rep(j, W) if( que.empty() && field[i][j] == '1' ){
que.push( make_tuple(0, i, j) );
break;
}
while( !que.empty() ){
auto p = que.top(); que.pop();
int x, y, c;
tie(c, y, x) = p;
if( field[y][x] == '2' ){
cout << c << endl;
break;
}
if( used[y][x] != IINF ) continue;
used[y][x] = c;
rep(i, 4){
int ny = y + dy[i];
int nx = x + dx[i];
int nc = c + (field[ny][nx] == '#');
if( nx < 0 || nx >= W || ny < 0 || ny >= H ) continue;
if( used[ny][nx] < nc ) continue;
que.push( make_tuple(nc, ny, nx) );
}
}
}
Gyuuto