#include <iostream>
#include <fstream>
#include <random>
#include <string>
using namespace std;
#define REP(i, x, n) for(int i = x; i < n; i++)
bool a[100][100] = {0};

bool isTriangle(int i, int j, int k, int l) {
	return a[i][j] && a[j][k] && a[k][l] && a[l][i] && !a[i][k] && !a[j][l];
}

int main(int argc, char* argv[])
{
	int n, m;
	cin >> n >> m;
	REP(i,0,m) {
		int p, q;
		cin >> p >> q;
		a[p][q] = a[q][p] = true;
	}
	int res = 0;
	REP(i,0,n)
	 REP(j,i+1,n)
	  REP(k,j+1,n)
	   REP(l,k+1,n) {
		 if(isTriangle(i, j, k, l)) res++;
		 else if(isTriangle(i, k, j, l)) res++;
		 else if(isTriangle(i, j, l, k)) res++;
	   }
	cout << res << endl;
	return 0;
}