Submission #6674086

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
int mbx,mby,m,n;
bool maps[501][501];
bool bo[501][501];
int stepx[4]={0,0,-1,1};
int stepy[4]={-1,1,0,0};
bool ss(int xx,int yy)
{
	if(xx==mbx&&yy==mby)return 1;
	int x,y;
	for(int i=0;i<4;i++)
	{
		x=xx+stepx[i];
		y=yy+stepy[i];
		if(x>0&&y>0&&x<=m&&y<=n)
			if(maps[x][y]==0&&bo[x][y]==0)
			{
				bo[x][y]=1;
				if(ss(x,y))return 1;
			}
	}
	return 0;
}
int main()
{
	int i,x,y,j;
	char c;
	cin>>n>>m;
	for(i=1;i<=n;i++)
		for(j=1;j<=m;j++)
		{
			cin>>c;
			if(c=='#'||c=='s')maps[j][i]=bo[j][i]=1;
			if(c=='g')mbx=j,mby=i;
			if(c=='s')x=j,y=i;
		}
	if(ss(x,y))cout<<"Yes";
	else cout<<"No";
	cout<<endl;
	return 0;
}

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