Submission #1796632

---

Source Code Expand

#include <stdio.h>
struct {
  int x[300];
  int rp,wp;
} q = {0};
static void enq(int x)
{
  if(q.wp<300){
    q.x[q.wp]=x;
  }
  ++q.wp;
}
static int deq(void)
{
  int ret =-1;
  if(q.rp>=q.wp) return ret;
  if(q.rp<300){
    ret = q.x[q.rp];
  }
  ++q.rp;
  return ret;
}
int main(void)
{
  int n,ng[3];
  int d[310]={0};
  int x;
  scanf("%d %d %d %d"
             ,&n,ng+0,ng+1,ng+2);
  enq(0);
  while((x=deq())>=0){
    int i;
    for(i=1;i<4;++i){
      if(x+i>n)continue;
      if( x+i==ng[0] ||
          x+i==ng[1] ||
          x+i==ng[2]){
        continue;
      }
      if(d[x+i]==0 || d[x+i]>d[x]+1){
        d[x+i]=d[x]+1;
        enq(x+i);
      }
    }
  }
  if(d[n]==0) printf("NO\n");
  else if(d[n]>100) printf("NO\n");
  else printf("YES\n");
  return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:28:3: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d %d %d"
   ^

Judge Result