Submission #2855543

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Source Code Expand

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

typedef long long int int64;

#define MAX(a,b) ((a)>(b)?(a):(b))
#define MIN(a,b) ((a)<(b)?(a):(b))
#define ABS(a) ((a)>(0)?(a):-(a))

int cmp(const void *a,const void *b){
  return *(int *)a-*(int *)b;
}

void run(void){
  int n,k;
  scanf("%d%d",&n,&k);
  int a[50];
  int i;
  for(i=0;i<n;i++) scanf("%d",a+i);
  qsort(a,n,sizeof(int),cmp);
  for(i=n-1;i>=0 && k>0;k-=a[i--]);
  if(k>0){
    printf("-1\n");
  } else {
    printf("%d\n",n-1-i);
  }
}

int main(void){
  run();
  return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘run’:
./Main.c:17:3: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d",&n,&k);
   ^
./Main.c:20:20: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
   for(i=0;i<n;i++) scanf("%d",a+i);
                    ^

Judge Result