Cod sursa(job #80443)

Utilizator horiama1Mania Horia horiama1 Data 27 august 2007 23:54:27
Problema Medie Scor 20
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.32 kb
Raporteaza aceasta sursa 
#include<stdio.h>
int v[9000];
int main()
{
freopen("medie.in","r",stdin);
freopen("medie.out","w",stdout);
int n,i,j,t=0,k;
scanf("%d",&n);
for(i=0;i<n;i++)
	scanf("%d",&v[i]);
for(i=0;i<n;i++)
	for(j=0;j<n;j++)
		for(k=j+1;k<n&&j!=i;k++)
		 if(v[k]==2*v[i]-v[j]&&k!=i)
		 t++;
printf("%d",t);
return 0;
}