Submission #3673619

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;

int m,n;
char maze[501][501];
bool vst[501][501];
int sx,sy,ex,ey;
bool flag=false;

//void read(int &s){
//	s=0;int t=1;
//	int k=getchar();
//	for(;k<'0'||k>'9';){
//		if(k=='-') t=-1;
//		k=getchar();
//	}
//	for(;k>='0'&&k<='9';){
//		s=(s<<1)+(s<<3)+k-'0';
//	}
//	s*=t;
//	return;
//}

void dfs(int x,int y){
	if(vst[x][y]) return;
	vst[x][y]=true;
	if(x==ex&&y==ey){
		flag=true;
		return;
	}
	if(x-1>0&&x-1<=m&&y>0&&y<=n&&maze[x-1][y]!='#'){
		dfs(x-1,y);
		if(flag) return;
	}
	if(x+1>0&&x+1<=m&&y>0&&y<=n&&maze[x+1][y]!='#'){
		dfs(x+1,y);
		if(flag) return;
	}
	if(x>0&&x<=m&&y-1>0&&y-1<=n&&maze[x][y-1]!='#'){
		dfs(x,y-1);
		if(flag) return;
	}
	if(x>0&&x<=m&&y+1>0&&y+1<=n&&maze[x][y+1]!='#'){
		dfs(x,y+1);
		if(flag) return;
	}
}

int main(){
	//read(m);read(n);
	scanf("%d%d",&m,&n);
	for(int i=1;i<=m;i++){
		for(int j=1;j<=n;j++){
			maze[i][j]=getchar();
			if(maze[i][j]=='s'){
				sx=i;sy=j;
			} 
			if(maze[i][j]=='g'){
				ex=i;ey=j;
			}
		}
	}
	dfs(sx,sy);
	if(flag) printf("Yes");
	else printf("No");
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:51:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&m,&n);
                     ^

Judge Result