답안 #1637

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1637	2013-07-11T11:29:16 Z	ainta	지우개 (GA4_eraser)	C++	100 / 100	25 ms	1276 KB

eraser

#include<stdio.h>
#include<algorithm>
using namespace std;
int w[100001],n,i;
long long c,s,g,res,Mod=1000000007;
int main()
{
	scanf("%d",&n);
	for(i=0;i<n;i++)scanf("%d",&w[i]);
	sort(w,w+n);
	for(i=n-1;i>=0;i--){
		if(i!=n-1 && w[i]!=w[i+1])
		{
			g=(g+s*c*w[i+1])%Mod;
			s=(s+c*w[i+1])%Mod;
			c=0;
		}
		c++;
		res=(res+g*w[i])%Mod;
	}
	printf("%lld\n",res);
}

Subtask #1

6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	1276 KB	Output is correct
2	Correct	0 ms	1276 KB	Output is correct
3	Correct	0 ms	1276 KB	Output is correct
4	Correct	0 ms	1276 KB	Output is correct
5	Correct	0 ms	1276 KB	Output is correct
6	Correct	0 ms	1276 KB	Output is correct
7	Correct	0 ms	1276 KB	Output is correct
8	Correct	0 ms	1276 KB	Output is correct
9	Correct	0 ms	1276 KB	Output is correct
10	Correct	0 ms	1276 KB	Output is correct

Subtask #2

7.0 / 7.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	1276 KB	Output is correct
2	Correct	0 ms	1276 KB	Output is correct
3	Correct	0 ms	1276 KB	Output is correct
4	Correct	0 ms	1276 KB	Output is correct
5	Correct	0 ms	1276 KB	Output is correct
6	Correct	0 ms	1276 KB	Output is correct
7	Correct	0 ms	1276 KB	Output is correct
8	Correct	0 ms	1276 KB	Output is correct
9	Correct	0 ms	1276 KB	Output is correct
10	Correct	0 ms	1276 KB	Output is correct

Subtask #3

16.0 / 16.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	1276 KB	Output is correct
2	Correct	0 ms	1276 KB	Output is correct
3	Correct	0 ms	1276 KB	Output is correct
4	Correct	0 ms	1276 KB	Output is correct
5	Correct	0 ms	1276 KB	Output is correct
6	Correct	0 ms	1276 KB	Output is correct
7	Correct	0 ms	1276 KB	Output is correct
8	Correct	0 ms	1276 KB	Output is correct
9	Correct	0 ms	1276 KB	Output is correct
10	Correct	0 ms	1276 KB	Output is correct

Subtask #4

17.0 / 17.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	1276 KB	Output is correct
2	Correct	0 ms	1276 KB	Output is correct
3	Correct	0 ms	1276 KB	Output is correct
4	Correct	0 ms	1276 KB	Output is correct
5	Correct	0 ms	1276 KB	Output is correct
6	Correct	0 ms	1276 KB	Output is correct
7	Correct	0 ms	1276 KB	Output is correct
8	Correct	0 ms	1276 KB	Output is correct
9	Correct	0 ms	1276 KB	Output is correct
10	Correct	0 ms	1276 KB	Output is correct

Subtask #5

26.0 / 26.0

#	결과	실행 시간	메모리	Grader output
1	Correct	22 ms	1276 KB	Output is correct
2	Correct	3 ms	1276 KB	Output is correct
3	Correct	4 ms	1276 KB	Output is correct
4	Correct	19 ms	1276 KB	Output is correct
5	Correct	0 ms	1276 KB	Output is correct
6	Correct	14 ms	1276 KB	Output is correct
7	Correct	6 ms	1276 KB	Output is correct
8	Correct	25 ms	1276 KB	Output is correct
9	Correct	15 ms	1276 KB	Output is correct
10	Correct	21 ms	1276 KB	Output is correct

Subtask #6

28.0 / 28.0

#	결과	실행 시간	메모리	Grader output
1	Correct	19 ms	1276 KB	Output is correct
2	Correct	1 ms	1276 KB	Output is correct
3	Correct	22 ms	1276 KB	Output is correct
4	Correct	4 ms	1276 KB	Output is correct
5	Correct	23 ms	1276 KB	Output is correct
6	Correct	4 ms	1276 KB	Output is correct
7	Correct	16 ms	1276 KB	Output is correct
8	Correct	17 ms	1276 KB	Output is correct
9	Correct	25 ms	1276 KB	Output is correct
10	Correct	16 ms	1276 KB	Output is correct