Submission #1167855

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Source Code Expand

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<math.h>
 
#define sl(x) scanf("%ld", &x)
#define ss(x) scanf("%s", x)
#define pl(x) printf("%ld\n", x)
#define pd(x) printf("%lf\n", x)
#define ps(x) printf("%s\n", x)
 
#define INF 1000000000000000000
#define MOD 1000000007
 
#define MIN(a,b) (((a)<(b))?(a):(b))
#define MAX(a,b) (((a)>(b))?(a):(b))

int compare_long(const void *a, const void *b) {
	return *(long*)a - *(long*)b;
}
 
int main() {
	long N, K;
	long a[100010];
	long sum = 0;
	long ans = 0;
	long right, left;
	long i, j;
	
	sl(N); sl(K);
	
	for(i=0;i<N;i++) {
		sl(a[i]);
		sum += a[i];
	}
	if(sum < K) {
		pl(N);
		return 0;
	}
	qsort(a, N, sizeof(long), compare_long);
	
	for(i=0;i<N;i++) {
		sum = a[i];
		right = i + 1;
		left = i - 1;
		while(right < N || left >= 0) {
			if(right >= N) sum += a[left--];
			else if(left < 0) sum += a[right++];
			else {
				if(a[right] - a[i] < a[i] - a[left]) sum += a[right++];
				else sum += a[left--];
			}
			if(sum >= K) {
				if(sum - a[i] >= K) {
					ans++;
				}
				break;
			}
		}
	}
	
	pl(ans);
	
	return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:6:15: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
 #define sl(x) scanf("%ld", &x)
               ^
./Main.c:30:2: note: in expansion of macro ‘sl’
  sl(N); sl(K);
  ^
./Main.c:6:15: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
 #define sl(x) scanf("%ld", &x)
               ^
./Main.c:30:9: note: in expansion of macro ‘sl’
  sl(N); sl(K);
         ^
./Main.c:6:15: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
 #define sl(x) scanf("%ld", &x)
               ^
./Main.c:33:3: note: in expansion of macro ‘sl’
   sl(a[i]);
   ^

Judge Result