Submission #2280

#	Time	Username	Problem	Language	Result	Execution time	Memory
2280		zyslee	지우개 (GA4_eraser)	C++98	30 / 100	1000 ms	1276 KiB

eraser

#include<stdio.h>
int d[100001];
int main()
{
	int n, i, j, k, a, max=0;
	long long int z, ans=0;
	scanf("%d", &n);
	for(i=1;i<=n;i++){
		scanf("%d", &a);
		d[a]++;
		if(max<a) max = a;
	}
	for(i=1;i<=max-2;i++){
		if(d[i]==0) continue;
		for(j=i+1;j<max;j++){
			if(d[j]==0) continue;
			for(k=j+1;k<=max;k++){
				z = (k*j)%1000000007;
				z = (z*i)%1000000007;
				z = (z*d[i]*d[j]*d[k])%1000000007;
				ans = (ans+z)%1000000007;
			}
		}
	}
	printf("%lld", ans);
	return 0;
}

• Subtask 1: 6 / 6
• Subtask 2: 7 / 7
• Subtask 3: 0 / 16
• Subtask 4: 17 / 17
• Subtask 5: 0 / 26
• Subtask 6: 0 / 28