oj.uz

Submission #2154

# Submission time Handle Problem Language Result Execution time Memory
2154 2013-07-20T05:56:47 Z jwvg0425 지우개 (GA4_eraser) C++
0 / 100
 11 ms 2448 KB 
#include<stdio.h>
#include<stdlib.h>

#define MOD 1000000007
int n;
long long int a[100000];
long long int v,s[100000];
int compare(const void* a,const void* b)
{
	return *((int*)a)>*((int*)b)?1:0;
}

int main()
{
	int i,j,k;
	scanf("%d",&n);
	for(i=0;i<n;i++)scanf("%lld",&a[i]);
	qsort(a,n,sizeof(long long int),compare);
	s[0]=a[0];
	for(i=1;i<n;i++)s[i]=s[i-1]+a[i];

	for(i=0;i<n;i++)
	{
		for(j=i+1;j<n-1;j++)
		{
			if(a[i]==a[j])continue;
			k=j+1;
			while(a[k]==a[j])k++;
			if(k<n)
			{
				v+=(s[n-1]-s[k-1])*(long long int)a[i]*(long long int)a[j]%MOD;
			}
		}
	}
	printf("%lld",v);
}

Subtask #1
0.0 / 6.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 2448 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 2448 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0.0 / 16.0

# Verdict Execution time Memory Grader output
1 Runtime error 0 ms 2448 KB close (syscall #3) was called by the program (disallowed syscall)
2 Halted 0 ms 0 KB -

Subtask #4
0.0 / 17.0

# Verdict Execution time Memory Grader output
1 Runtime error 0 ms 2448 KB close (syscall #3) was called by the program (disallowed syscall)
2 Halted 0 ms 0 KB -

Subtask #5
0.0 / 26.0

# Verdict Execution time Memory Grader output
1 Runtime error 11 ms 2448 KB close (syscall #3) was called by the program (disallowed syscall)
2 Halted 0 ms 0 KB -

Subtask #6
0.0 / 28.0

# Verdict Execution time Memory Grader output
1 Runtime error 10 ms 2448 KB close (syscall #3) was called by the program (disallowed syscall)
2 Halted 0 ms 0 KB -