#include<stdio.h>
#include<bitset>
using namespace std;

typedef struct punct
{
    int x,y;

}punct;
punct v[65538];
bitset <4098> f[4098];

int main()
{
    freopen("triplete.in","r",stdin);
    freopen("triplete.out","w",stdout);
    int n,m,i;
    unsigned int sol=0;
    scanf("%d%d",&n,&m);
    for(i=1;i<=m;++i)
    {
        scanf("%d%d",&v[i].x,&v[i].y);
        f[min(v[i].x,v[i].y)-1][max(v[i].x,v[i].y)-1]=1;
        --v[i].x;
        --v[i].y;
    }
    for(i=1;i<=m;++i)
        sol+=(f[v[i].x]&f[v[i].y]).count();
    printf("%d\n",sol);
    return 0;
}