Submission #420229

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Source Code Expand

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

const int dx[]={-1,0,1,0},dy[]={0,-1,0,1};
int H,W;
char fld[510][510];

int sx,sy,gx,gy;

bool dfs(int y,int x){
    if(fld[y][x]=='#')return false;
    if(y==gy&&x==gx)return true;

    fld[y][x]='#';
    bool ret=false;
    for(int d=0;d<4;d++){
        int ty=y+dy[d];
        int tx=x+dx[d];
        if(ty<0||ty>=H||tx<0||tx>=W)continue;
        ret|=dfs(ty,tx);
    }
    return ret;
}
int main(){
    scanf("%d%d",&H,&W);
    for(int i=0;i<H;i++){
        scanf("%s",fld[i]);
        for(int j=0;j<W;j++){
            if(fld[i][j]=='s'){
                sy=i;sx=j;
            }
            if(fld[i][j]=='g'){
                gy=i;gx=j;
            }
        }
    }

    if(dfs(sy,sx))puts("Yes");
    else puts("No");
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:25:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d",&H,&W);
                        ^
./Main.cpp:27:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%s",fld[i]);
                           ^

Judge Result