#include<stdio.h>
#include<bitset>
int n,m,a[66000],b[66000],i,j,t;
bitset<4100> c[4100],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("%d%d",a+i,b+i),c[a[i]<b[i]?a[i]:b[i]].set(a[i]<b[i]?b[i]:a[i]);
    for(j=1;j<=m;j++)
        r=c[a[j]]&c[b[j]],t+=r.count();
    printf("%d",t);
}