//O(n^3)
#include <fstream>
#define nmax 4100
using namespace std;
ifstream fi("triplete.in");
ofstream fo("triplete.out");
bool S[nmax][nmax];
int main(void)
{
    int n,m;
    for (fi>>n>>m;m--;)
    {
        int x,y;
        fi>>x>>y;
        S[x][y]=1;
        S[y][x]=1;
    }
    unsigned long long R=0;
    for (int i=1;i<n-1;++i)
        for (int j=i+1;j<n;++j)
            for (int a=j+1;a<=n;++a)
                if (S[i][j] && S[i][a] && S[j][a]) ++R;
    fo<<R<<"\n";
    fo.close();
    return 0;
}