Submission #172501

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Source Code Expand

#include <stdio.h>
#include <stdlib.h>

int i,j,k;

long SUM(long bottom,long roof,long count);
long C(long n,long r);
long F(long n);

int main(){
  int n;
  long a[2000];
  scanf("%d",&n);
  for(i=0;i<n;i++){
    scanf("%ld",&a[i]);
  }
  
  long bottom,roof;
  long count;
  long s;
  long ans=1;

  long f=0;
  for(i=0;i<n;i++){
    count++;

    if(f==0 && a[i]==-1){
      bottom=a[i-1];
      f=1;
      count=0;
    }
    if(f==1 && a[i]!=-1){
      roof=a[i];
      f=0;
      // printf("b:%ld,r:%ld,c:%ld\n",bottom,roof,count);
      s=SUM(bottom,roof,count);
      ans*=s;
    }
  }

  printf("%ld\n",ans%1000000007);
  return 0;
}

long SUM(long bottom,long roof,long count){
  return C(roof-bottom+count,count);
}

long C(long n,long r){
  if(r<=0)return 1;
  return F(n)/(F(r)*F(n-r));
}

long F(long n){
  long f=n;
  if(n <= 0)return 1;

  while(--n){
    f *= n;
  }
  return f;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:13:8: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
./Main.c:15:10: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]

Judge Result