답안 #8848

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
8848	2014-09-21T11:38:23 Z	gs13068	Uniting (kriii2_U)	C++	4 / 4	12 ms	1088 KB

U

#include<cstdio>

int main()
{
	long long sum,res,cnt;
	int i,n,a;
	scanf("%d",&n);
	sum=res=0;
	cnt=1;
	for(i=1;i<=n;i++)
	{
		scanf("%d",&a);
        sum+=a;
        res-=a*a;
        if(i>1)
		{
			cnt*=i;
			cnt%=1000000007;
			cnt*=i-1;
			cnt%=1000000007;
		}
	}
	printf("%lld\n%lld",(sum*sum+res)/2,cnt);
}

Subtask #1

4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	1088 KB	Output is correct
2	Correct	0 ms	1088 KB	Output is correct
3	Correct	0 ms	1088 KB	Output is correct
4	Correct	0 ms	1088 KB	Output is correct
5	Correct	0 ms	1088 KB	Output is correct
6	Correct	0 ms	1088 KB	Output is correct
7	Correct	0 ms	1088 KB	Output is correct
8	Correct	0 ms	1088 KB	Output is correct
9	Correct	0 ms	1088 KB	Output is correct
10	Correct	0 ms	1088 KB	Output is correct
11	Correct	0 ms	1088 KB	Output is correct
12	Correct	0 ms	1088 KB	Output is correct
13	Correct	0 ms	1088 KB	Output is correct
14	Correct	0 ms	1088 KB	Output is correct
15	Correct	0 ms	1088 KB	Output is correct
16	Correct	0 ms	1088 KB	Output is correct
17	Correct	0 ms	1088 KB	Output is correct
18	Correct	0 ms	1088 KB	Output is correct
19	Correct	0 ms	1088 KB	Output is correct
20	Correct	0 ms	1088 KB	Output is correct
21	Correct	0 ms	1088 KB	Output is correct
22	Correct	0 ms	1088 KB	Output is correct
23	Correct	0 ms	1088 KB	Output is correct
24	Correct	0 ms	1088 KB	Output is correct
25	Correct	0 ms	1088 KB	Output is correct
26	Correct	0 ms	1088 KB	Output is correct
27	Correct	4 ms	1088 KB	Output is correct
28	Correct	4 ms	1088 KB	Output is correct
29	Correct	4 ms	1088 KB	Output is correct
30	Correct	4 ms	1088 KB	Output is correct
31	Correct	4 ms	1088 KB	Output is correct
32	Correct	4 ms	1088 KB	Output is correct
33	Correct	4 ms	1088 KB	Output is correct
34	Correct	4 ms	1088 KB	Output is correct
35	Correct	4 ms	1088 KB	Output is correct
36	Correct	4 ms	1088 KB	Output is correct
37	Correct	4 ms	1088 KB	Output is correct
38	Correct	4 ms	1088 KB	Output is correct
39	Correct	8 ms	1088 KB	Output is correct
40	Correct	8 ms	1088 KB	Output is correct
41	Correct	8 ms	1088 KB	Output is correct
42	Correct	8 ms	1088 KB	Output is correct
43	Correct	4 ms	1088 KB	Output is correct
44	Correct	8 ms	1088 KB	Output is correct
45	Correct	8 ms	1088 KB	Output is correct
46	Correct	8 ms	1088 KB	Output is correct
47	Correct	4 ms	1088 KB	Output is correct
48	Correct	8 ms	1088 KB	Output is correct
49	Correct	12 ms	1088 KB	Output is correct
50	Correct	12 ms	1088 KB	Output is correct