#include <bits/stdc++.h>
using namespace std;

ifstream ci("triplete.in");
ofstream cou("triplete.out");

struct date{
    int x,y;
};

int n,m;
bitset<4100>b[4100];
date v[4100];

void citire(){
    int i;
    ci>>n>>m;
    for(i=1;i<=m;i++){
        ci>>v[i].x;
        ci>>v[i].y;
        if(v[i].x>v[i].y){swap(v[i].x,v[i].y);}
        b[v[i].x][v[i].y]=1;
    }
}

void rez(){
    int i,j,sol=0,x,y;


    for(i=1;i<=m;i++){
        x=v[i].x;
        y=v[i].y;

        sol+=(b[x]&b[y]).count();
    }
    cou<<sol;

}


int main()
{
    citire();
    rez();
    return 0;
}