Submission #20419

#	Time	Username	Problem	Language	Result	Execution time	Memory
20419		tlwpdus (#35)	복불복 (OJUZ11_luck)	C++98	13 / 100	0 ms	1116 KiB

luck

// k==1

#include<stdio.h>
#include<algorithm>
#include<vector>
#include<math.h>
#include<queue>
 
using namespace std;
 
typedef long long ll;

const ll MOD = 1000000007;
ll res = 0;
int n, k;
int a[110];
int b[110];

int main() {
	int i, j, l;
	scanf("%d%d",&n,&k);
	for (i=0;i<n;i++) scanf("%d",&a[i]);
	for (i=0;i<n;i++) scanf("%d",&b[i]);
	sort(a,a+n); sort(b,b+n);
	for (i=0;i<n;i++) {
		int v = a[n-1]+b[i];
		ll tres = 1;
		for (j=n-2;j>=0;j--) {
			int cnt = 0;
			for (l=0;l<n;l++) {
				if (l==i) continue;
				if (a[j]+b[l]>v) break;
				cnt++;
			}
			if (cnt<=n-2-j) {
				tres = 0;
				break;
			}
			tres *= cnt-(n-2-j);
			tres %= MOD;
		}
		res += tres;
		res %= MOD;
	}
	printf("%lld\n",res);

	return 0;
}

Compilation message (stderr)

luck.cpp: In function 'int main()':
luck.cpp:21:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d",&n,&k);
                     ^
luck.cpp:22:37: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for (i=0;i<n;i++) scanf("%d",&a[i]);
                                     ^
luck.cpp:23:37: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for (i=0;i<n;i++) scanf("%d",&b[i]);
                                     ^

• Subtask 1: 0 / 9
• Subtask 2: 13 / 13
• Subtask 3: 0 / 25
• Subtask 4: 0 / 26
• Subtask 5: 0 / 27