#include<fstream>
#include<vector>
using namespace std;
ifstream fin("triplete.in");
ofstream fout("triplete.out");
int n,m,i,j,t,sol,a,b,x,y,aux;
vector<short>L[4100];
char f[4100][4100];
int main(){
    fin>>n>>m;
    for(i=1;i<=m;i++){
        fin>>a>>b;
        if(a<b){
            aux=a;
            a=b;
            b=aux;
        }
        L[a].push_back(b);
        f[a][b]='1';
    }
    for(i=1;i<=n;i++){
        for(j=0;j<L[i].size();j++)
            for(t=0;t<L[i].size();t++){
                x=L[i][j];
                y=L[i][t];
                if(x<y){
                    aux=x;
                    x=y;
                    y=aux;
                }
                if(f[x][y]=='1'){
                    sol++;
                }
            }
    }
    fout<<sol/2;
    return 0;
}