Submission #420210

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Source Code Expand

#include <cstdlib>
#include <cmath>
#include <climits>
#include <cfloat>
#include <map>
#include <set>
#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <sstream>
#include <complex>
#include <stack>
#include <queue>
#include <cstdio>
#include <cstring>
#include <iterator>
#include <bitset>
#include <unordered_set>
#include <unordered_map>
#include <fstream>
//#include <utility>
//#include <memory>
//#include <functional>
//#include <deque>
//#include <cctype>
//#include <ctime>
//#include <numeric>
//#include <list>
//#include <iomanip>

//#if __cplusplus >= 201103L
//#include <array>
//#include <tuple>
//#include <initializer_list>
//#include <forward_list>
//
//#define cauto const auto&
//#else

//#endif

using namespace std;


typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

typedef vector<int> vint;
typedef vector<vector<int> > vvint;
typedef vector<long long> vll, vLL;
typedef vector<vector<long long> > vvll, vvLL;

#define VV(T) vector<vector< T > >

template <class T>
void initvv(vector<vector<T> > &v, int a, int b, const T &t = T()){
    v.assign(a, vector<T>(b, t));
}

template <class F, class T>
void convert(const F &f, T &t){
    stringstream ss;
    ss << f;
    ss >> t;
}

#undef _P
#define _P(...) (void)printf(__VA_ARGS__)
#define reep(i,a,b) for(int i=(a);i<(b);++i)
#define rep(i,n) reep((i),0,(n))
#define ALL(v) (v).begin(),(v).end()
#define PB push_back
#define F first
#define S second
#define mkp make_pair
#define RALL(v) (v).rbegin(),(v).rend()
#define DEBUG
#ifdef DEBUG
#define dump(x)  cout << #x << " = " << (x) << endl;
#define debug(x) cout << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << endl;
#else
#define dump(x) 
#define debug(x) 
#endif

#define MOD 1000000007LL
#define EPS 1e-8
static const int INF=1<<24;
int dp[550][550];
int h,w;
int dd[]={1,0,-1,0,1};
bool check(int a,int b){
    if(0<=a&&a<h&&0<=b&&b<w) return true;
    return false;
}
bool foo(vector<string> &v,int a,int b){
    if(!check(a,b)) return false;
    if(dp[a][b]) return false;
    dp[a][b]=1;
    if(v[a][b]=='#') return false;
    if(v[a][b]=='g') return true;
    rep(i,4){
        if(foo(v,a+dd[i],b+dd[i+1])) return true;
    }
    return false;
}
void mainmain(){
    // int h,w;
    cin>>h>>w;
    vector<string> v(h);
    rep(i,h) cin>>v[i];
    rep(i,h){
        rep(j,w){
            if(v[i][j]=='s'){
                if(foo(v,i,j)){
                    cout<<"Yes"<<endl;
                }
                else{
                    cout<<"No"<<endl;
                }
                    return;
            }
        }
    }
}


signed main() {
    mainmain();
}

Submission Info

Judge Result