#include<bits/stdc++.h>
using namespace std;
int n, m;
int g[55][55];
int main(){
cin >> n >> m;
for(int i = 0; i < m; i++){
  int a, b;
  cin >> a >> b;
  g[a][b] = g[b][a] = 1;
}
int t = 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 = g[i][j] + g[i][k] + g[i][l];
        int y = g[j][i] + g[j][k] + g[j][l];
        int z = g[k][i] + g[k][j] + g[k][l];
        int w = g[l][i] + g[k][j] + g[l][k];
        if(x == 2 && y == 2 && z == 2 && w == 2)t++;
      }
    }  
  }
}
  cout << t << endl;
  return 0;
}