#include <bits/stdc++.h>
#define FOR(i,bg,ed) for(ll i=(bg);i<(ed);i++)
#define REP(i,n) FOR(i,0,n)
#define MOD 1000000007
#define int long long
using namespace std;
typedef long long ll;
typedef vector<vector<ll>> mat;
const int INF = 1e9;



signed main()
{
    int N, M;
    int a, b;
    int g[55][55] = {};

    cin >> N >> M;
    REP(i,M) {
        cin >> a >> b;
        g[a][b] = g[b][a] = 1;
    }

    int ans = 0;
    REP(i,50) REP(j,50) REP(k,50) REP(l,50) {
        if ((set<int>{i, j, k, l}).size() == 4 && g[i][j] && g[j][k] && g[k][l] && g[l][i] && !g[i][k] && !g[j][l]) {
            ans++;
        }
    }

    cout << ans / 8 << endl;
}