#include<fstream>
#include<vector>
#include<cstring>
using namespace std;
ifstream fin("triplete.in");
ofstream fout("triplete.out");
int f[4100], n, m, x, y;
long long sol = 0;
vector<int> v[4100];
int main(){
    fin >> n >> m;
    for( int i = 1; i <= m; i++ ){
        fin >> x >> y;
        v[x].push_back(y);
        v[y].push_back(x);
    }
    sol = 0;
    for( int i = 1; i <= n; i++ ){
        memset( f, 0, sizeof(f) );
        for( int j = 0; j < v[i].size(); j++ ){
            f[ v[i][j] ] = 1;
        }
        for( int j = 0; j < v[i].size(); j++ ){
            int nod = v[i][j];
            if( nod > i ){
                for( int k = 0; k < v[nod].size(); k++ ){
                    int vecin = v[nod][k];
                    if( vecin > nod && f[vecin] == 1 ){
                        sol++;
                    }
                }
            }
        }
    }
    fout << sol;
    return 0;
}