Submission #7169544

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Source Code Expand

# include <cstdio>
# include <iostream>
# include <algorithm>
using namespace std;
const int N=505;
const int dx[4]={0,1,0,-1};
const int dy[4]={1,0,-1,0};
int n,m,s1,s2,e1,e2;
int a[N][N];
bool ans,v[N][N];
char c;

void dfs (int i,int j) {
	if (i==e1&&j==e2) {
		ans=1;
		exit(0);
	}
	for (int k=0;k<4;k++) {
		int x=i+dx[k];
		int y=j+dy[k];
		if (x<1||y<1||x>n||y>m||(!a[x][y])||v[x][y]) continue;
		v[x][y]=1;
		dfs (x,y);
		v[x][y]=0;
	}
	return ;
}

int main () {
	scanf ("%d%d",&n,&m);
	for (int i=1;i<=n;i++) {
		for (int j=1;j<=m;j++) {
			cin>>c;
			if (c=='s') {s1=i;s2=j;}
			if (c=='g') {e1=i,e2=j;}
			if (c=='#') a[i][j]=0;
			else a[i][j]=1;
		}
	}v[s1][s2]=1;
	dfs (s1,s2);
	if (ans) puts("Yes");
	else puts("No");
	return 0;
}
//By苍空的蓝耀

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:30:22: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf ("%d%d",&n,&m);
                      ^

Judge Result