Cod sursa(job #27672)
Utilizator | Data | 6 martie 2007 22:29:52 | |
---|---|---|---|
Problema | Triplete | Scor | 50 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.54 kb |
#include <stdio.h>
#include <bitset>
using namespace std;
bitset<4097> a[4097];
int main()
{
freopen("triplete.in","r",stdin);
freopen("triplete.out","w",stdout);
register int i,j,k;
register long n,m, T=0;
scanf("%ld%ld",&n,&m);
T=1;
for(i=1;i<=m;++i)
{
scanf("%ld%ld",&j,&k);
a[j][k]=T;
a[k][j]=T;
}
T=0;
for(i=1;i<n;++i)
for(j=i+1;j<n;++j)
if(a[i][j])
for(k=j+1;k<=n;++k)
if(a[i][k] & a[j][k])
++T;
printf("%ld\n",T);
return 0;
}