#include<bitset>
using namespace std;
int n,m,a[65537],b[65537],i,j,t;
bitset<4097> c[4097],r;
int main() {
    freopen("triplete.in","r",stdin),freopen("triplete.out","w",stdout),scanf("%d%d",&n,&m);
    for(i=1;i<=m;i++) {
        scanf("%ld%ld",&a[i],&b[i]);
        if(a[i]>b[i])
             j=a[i],a[i]=b[i],b[i]=j;
        c[a[i]].set(b[i]);
    }
    for(i=1;i<=m;i++)
        r=c[a[i]]&c[b[i]],t+=r.count();
    printf("%d",t);
}