oj.uz

Submission #1996

# Submission time Handle Problem Language Result Execution time Memory
1996 2013-07-19T15:00:09 Z gs13105 지우개 (GA4_eraser) C++
0 / 100
 11 ms 1276 KB 
#include <stdio.h>
#define d 1000000007

int arr[100001];

int main()
{
	int n,mx=0,i;
	long long sum1=0,sum2=0,sum3=0,vol;
	scanf("%d",&n);
	for(i=0;i<n;i++)
	{
		scanf("%d",&arr[i]);
		sum1+=arr[i];
		sum1%=d;
		sum2+=arr[i]*arr[i];
		sum2%=d;
		sum3+=arr[i]*arr[i]%d*arr[i];
		sum3%=d;
	}
	vol=(sum1*sum1%d*sum1%d-sum3)%d;
	for(i=0;i<n;i++)
	{
		vol+=d-3*arr[i]*arr[i]%d*(sum1-arr[i])%d;
		vol%=d;
	}
	vol/=6;
	printf("%lld",vol%d);
	return 0;
}

Subtask #1
0.0 / 6.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 1276 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0.0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 1276 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0.0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 1276 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0.0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 1276 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0.0 / 26.0

# Verdict Execution time Memory Grader output
1 Incorrect 11 ms 1276 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0.0 / 28.0

# Verdict Execution time Memory Grader output
1 Incorrect 10 ms 1276 KB Output isn't correct
2 Halted 0 ms 0 KB -