Submission #3788219

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = 550;
char a[N][N];
int ans,n,m,vis[N][N];
void dfs(int x, int y)
{	    
	int i;
    if(x<1 || x>n || y<1 || y>m || a[x][y] == '#' || vis[x][y]==1 || ans>0) return;
    if(a[x][y] == 'g') ans++;
    vis[x][y]=1; //标记走过的路     
    dfs(x-1, y);
    dfs(x+1, y);
    dfs(x, y-1);
    dfs(x, y+1);
    //vis[x][y]=0; //回溯走过的路，因为有些路走不通，要往回走， 
}
int main()
{
    int i,j,c,b;
    cin >> n >> m;
    getchar();
    for(i=1;i<=n;i++)
    {
        for(j=1;j<=m;j++)
        {
            scanf("%c",&a[i][j]);	
            if(a[i][j]=='s') 
            {
                c=i;b=j;
            }
        }
        getchar();
    }				
    dfs(c, b); //深搜 
    if(ans) cout << "Yes\n";
    else cout << "No\n";
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:28:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
             scanf("%c",&a[i][j]); 
                                 ^

Judge Result