Submission #8395

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
8395	2014-09-13 16:35:21	ainta	Uniting (kriii2_U)	C++98	4 / 4	12 ms	1088 KiB

U

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#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);
}
 
 
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• Subtask 1: 4 / 4