Submission #7102254

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
int rr[4]={1,-1,0,0};
int ss[4]={0,0,1,-1};
int sx,sy,ex,ey;
int s[510][510];
char hh;
void dfs(int a,int b)
{
	if(a==ex&&b==ey)
	 {
	 	cout<<"Yes"<<endl;
	 	exit(0);
	 }
	for(int i=0;i<=3;i++)
	{
		int x=a+rr[i];
		int y=b+ss[i];
		if(!s[x][y])
		{
		   s[x][y]=1;
		   dfs(x,y);
		   s[x][y]=0;
		}
	}
}
int main()
{   
    memset(s,1,sizeof(s));
	int n,m;
	cin>>n>>m;
	for(int i=1;i<=n;i++)
	 for(int j=1;j<=m;j++)
	 {
	 	cin>>hh;
	 	if(hh=='s')
	 	 sx=i,sy=j;
	 	if(hh=='g')
	 	 ex=i,ey=j;
	 	if(hh!='#')
	 	 s[i][j]=0;
	 }  
	dfs(sx,sy);
	cout<<"No"<<endl;
    return 0;
}

Submission Info

Judge Result