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Cod sursa(job #287645)
//#include <cstdlib>
#include <iostream>
int n,m;
bool a[4092][4092];
using namespace std;
int main()
{ int *p,*q;
freopen("triplete.in","r",stdin);
freopen("triplete.out","w",stdout);
scanf("%i%i",&n,&m);
p=new(int);
q=new(int);
for(int i=0;i<m;i++)
{
scanf("%i%i",p,q);
a[*p-1][*q-1]=1;
a[*q-1][*p-1]=1;
}
delete(p);
delete(q);
m=0;
for(int i=0;i<n;i++)
for(int j=i+1;j<n;j++)
{
if(a[i][j]==1)
for(int k=j+1;k<n;k++)
{
if(a[i][k]==1) if(a[j][k]==1) m++;
}
}
printf("%i",m);
return 0;
}