#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<ctime>
#include<cctype>
#include<climits>
#include<iostream>
#include<string>
#include<vector>
#include<map>
#include<list>
#include<queue>
#include<deque>
#include<algorithm>
#include<numeric>
#include<utility>
#include<complex>
#include<memory>
#include<functional>

using namespace std;

long pow_mod(long x, long y, long mod) {
  long tmp = 1;
  x %= mod;
  if (y > 0) {
    tmp = pow_mod(x, y / 2, mod);
    if (y % 2) {
      tmp = (((tmp * tmp) % mod) * x) % mod;
    } else {
      tmp = (tmp * tmp) % mod;
    }
  }
  return tmp;
}

int main() {
  cin.tie(0);
  ios::sync_with_stdio(false);
  
  int n, m;
  cin >> n >> m;
  
  int a, b;
  vector<vector<int>> ab(n,vector<int>(n));
  for (int i = 0; i < m; i++) {
    cin >> a >> b;
    ab[a][b] = ab[b][a] = 1;
  }

  int ans = 0;
  for (int i = 0; i < n; i++) {
    for (int j = i + 1; j < n; j++) {
      for (int k = j + 1; k < n; k++) {
        for (int l = k + 1; l < n; l++) {

          int x = ab[i][j] + ab[i][k] + ab[i][l];
          int xx = ab[j][i] + ab[j][k] + ab[j][l];
          int xxx = ab[k][i] + ab[k][j] + ab[k][l];
          int xxxx = ab[l][i] + ab[l][j] + ab[l][k];
          if (x == 2 && xx == 2 && xxx == 2 && xxxx == 2) {
            ans++;
          }
        }
      }
    }
  }
  cout << ans << endl;
  return 0;
}