#include <bits/stdc++.h>
using namespace std;

#define int long long
#define rep(i,l,r) for(int i=(int)(l);i<(int)(r);i++)
#define all(x) (x).begin(),(x).end()
#define pb push_back
template<class T>bool chmax(T &a,T b){if(a<b){a=b;return 1;}return 0;}
template<class T>bool chmin(T &a,T b){if(a>b){a=b;return 1;}return 0;}

typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<vi> vvi;

const int inf = 1LL<<60;
const int mod = 1e9 + 7;
const double eps = 1e-9;

/*{
}*/

signed main()
{
  int n, m;
  cin >> n >> m;

  vvi g(n, vi(n));
  rep(i, 0, m){
    int a, b;
    cin >> a >> b;
    g[a][b] = g[b][a] = 1;
  }

  int ans = 0;
  rep(i, 0, n) rep(j, i+1, n) rep(k, j+1, n) rep(l, k+1, n){
    int d1 = g[i][j] + g[i][k] + g[i][l];
    int d2 = g[j][i] + g[j][k] + g[j][l];
    int d3 = g[k][i] + g[k][j] + g[k][l];
    int d4 = g[l][i] + g[l][j] + g[l][k];
    if(d1 == 2 and d2 == 2 and d3 == 2 and d4 == 2) ans++;
  }

  cout << ans << endl;

  return 0;
}