Submission #3489419

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Source Code Expand

#include<iostream>
#include<cstdio>
using namespace std;
int h[250005][3];
bool vis[504][504];
int a[]={1,0,-1,0};
int b[]={0,1,0,-1};
int f=0,l=0;
int main()
{
	char s[504][504];
	int n,m;
	scanf("%d%d",&m,&n);
	for(int i=1;i<=m;i++)
	{
		for(int j=1;j<=n;j++)
		cin>>s[i][j];	
	}
	for(int q=1;q<=m;q++)
	{
		for(int w=1;w<=n;w++)
		{
			if(s[q][w]=='s')
			{
				h[0][1]=q,h[0][2]=w,vis[q][w]=1;
				int head=0,tail=0;
				do
				{
					
					for(int p=0;p<4;p++)
					{
						if(h[tail][1]+a[p]>=1&&h[tail][1]+a[p]<=m&&h[tail][2]+b[p]>=1&&h[tail][2]+b[p]<=n){
						if(s[h[tail][1]+a[p]][h[tail][2]+b[p]]=='g')
						{
							cout<<"Yes"<<endl;
							return 0;
						}
						if(!vis[h[tail][1]+a[p]][h[tail][2]+b[p]]&&s[h[tail][1]+a[p]][h[tail][2]+b[p]]=='.')
						{
							vis[h[tail][1]+a[p]][h[tail][2]+b[p]]=1;
							h[head+1][1]=h[tail][1]+a[p];
							h[head+1][2]=h[tail][2]+b[p];
							f=1;head++;
							//cout<<h[head][1]<<" "<<h[head][2]<<endl;
						}}
					}
					tail++;
					f=0;
					
				}while(head>=tail);
				l=1;
				break;
			}
			
		}if(l)break;
	}
	cout<<"No"<<endl;
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:13:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&m,&n);
                     ^

Judge Result