#include <bits/stdc++.h>
#define F first
#define S second
#define sz(x) int(x.size())
#define pb push_back
#define N 300005
#define M ll(998244353)
using namespace std;
typedef long double ld;
typedef long long ll;
typedef short int si;
vector <int> g[51];
bool mk[51], mkr[51][51];
bool dostig(int v, int to, int cur)
{
if (mk[v]) return 0;
if (v == to && cur == -1) return 1;
if (v == to) return 0;
bool fr = 0;
int lst = cur;
if (v == cur) {fr = 1; cur = -1;}
mk[v] = 1;
bool f = 0;
for (auto it : g[v]) {f = dostig(it, to, cur); if (f) break;}
mk[v] = 0;
if (fr) cur = lst;
return f;
}
int main()
{
ios_base::sync_with_stdio(0); istream::sync_with_stdio(0); cin.tie(0); cout.tie(0);
int n, m;
cin >> n >> m;
for (int i = 0; i < m; i++)
{
int x, y;
cin >> x >> y;
g[x].pb(y);
g[y].pb(x);
}
int ans = 0;
for (int i = 1; i <= n; i++)
for (int j = 1; j <= n; j++)
for (int u = 1; u <= n; u++)
if (i != j && j != u && i != u && dostig(i, j, u)) ans++;
cout << ans << endl;
}
