Submission #8395

#	Time	Username	Problem	Language	Result	Execution time	Memory
8395		ainta	Uniting (kriii2_U)	C++98	4 / 4	12 ms	1088 KiB

U

#pragma warning(disable:4996)
#include<stdio.h>
int n, S, a, i;
long long R2 = 1, Mod = 1000000007, R;
int main()
{
	scanf("%d", &n);
	for (i = 1; i <= n; i++){
		scanf("%d", &a);
		R += S*a;
		S += a;
		R2 = R2 * i % Mod;
		if (i != n)R2 = R2 * i % Mod;
	}
	printf("%lld\n%lld\n", R, R2);
}

• Subtask 1: 4 / 4