Submission #6425484

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Source Code Expand

#include<stdio.h>
int a[502][502];
char h[502][502];
int n, m, p, q, flag = 0;
void dfs(int x, int y)
{
    int next[4][2] = {{1,0}, 
                       {0,1},
                        {-1,0},
                         {0,-1}};
    int tx, ty, k;
    if(x==p && y==q){
            flag = 1;
            return;
        }
    for(k=0; k<=3; k++){
        tx = x + next[k][0];
        ty = y + next[k][1];
        if(tx<1 || tx>n || ty<1 || ty>m)
            continue;
        if(a[tx][ty]==0){
            a[tx][ty] = 1;
            dfs(tx, ty);
        
        }			
      }	
                     
    return;
}
int main()
{
    int i, j, startx, starty;
    scanf("%d %d", &n, &m);
    for(i=1; i<=n; i++){
        scanf("\n"); 
        for(j=1; j<=m; j++){
            scanf("%c", &h[i][j]);
            
            if(h[i][j]=='s'){
            	startx = i;
            	starty = j;
            	
            }
           if(h[i][j]=='g'){
                p = i;
                q = j;
                
            }
            if(h[i][j]=='.')
            a[i][j] = 0;
            if(h[i][j]=='#')
            a[i][j] = 1;
        }
    }
    
    dfs(startx, starty);
    if(flag==1)
    printf("Yes");
    else
    printf("No");
    return 0;
    
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:33:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &n, &m);
     ^
./Main.c:35:9: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("\n"); 
         ^
./Main.c:37:13: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
             scanf("%c", &h[i][j]);
             ^

Judge Result