Submission #3664073

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
struct Point
{
	int x,y;
};
Point q[250000],s,t;
bool used[600][600];
char g[600][600];
int det[4][2]={{0,1},{0,-1},{1,0},{-1,0}};
int n,m;
int f=1,e=0;
int main()
{
	cin>>n>>m;
	for(int i=0;i<n;i++)
	{
		scanf("%s",g[i]);
		for(int j=0;j<m;j++)
		{
			if(g[i][j]=='s')
			{
				s.x=i;
				s.y=j;
				used[i][j]=1;
				q[++e]=s;
			}
			if(g[i][j]=='g')
			{
				t.x=i;
				t.y=j;
			}
		}
	}
	while(f<=e)
	{
		Point u=q[f++];
		for(int i=0;i<4;i++)
		{
			Point v=u;
			v.x+=det[i][0];
			v.y+=det[i][1];
			if(v.x<0||v.x>=n) continue;
			if(v.y<0||v.y>=m) continue;
			if(used[v.x][v.y]) continue;
			if(g[v.x][v.y]=='#') continue;
			if(g[v.x][v.y]=='g')
			{
				cout<<"Yes"<<endl;
				return 0;
			}
			q[++e]=v;
			used[v.x][v.y]=1;
		}
	}
	cout<<"No";
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:18:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s",g[i]);
                   ^

Judge Result