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#include <bits/stdc++.h>

#define ll long long
#define str string
#define pii pair<int, int>
#define pll pair<ll, ll>
#define fi first
#define se second

#define vc vector<char>
#define vvc vector<vc>
#define vi vector<int>
#define vll vector<ll>
#define vvi vector<vi>
#define vvll vector<vll>
#define vvvll vector<vvll>
#define vs vector<str>
#define vvs vector<vs>
#define vpii vector<pii>
#define vvpii vector<vpii>
#define vpll vector<pll>
#define vvpll vector<vpll>
#define vb vector<bool>
#define vvb vector<vb>
#define rep(i, a, b) for (int i = (a); i < int(b); i++)
#define repi(i, a, b) for (int i = (a); i <= int(b); i++)


using namespace std;
ll INF = LONG_LONG_MAX/2;
ll mod = 1000000000 + 7;

template <typename T, typename L>
void read(vector<T> & _data, L & _size, bool _shift) {
    _data.resize(_size + (ll)_shift);
    for (ll i = (ll)_shift; i < _size + (ll)_shift; i++)
        cin >> _data[i];
}

template <typename T, typename L>
void read(vector<vector<T>> & _data, L & _rows, L & _cols, bool _shiftRows, bool _shiftCols) {
    _data.resize(_rows + (ll)_shiftRows);
    for (ll i = 0; i < _rows + (ll)_shiftRows; i++)
        _data[i].resize(_cols + (ll)_shiftCols);
    for (ll i = (ll)_shiftRows; i < _rows + (ll)_shiftRows; i++)
        for (ll j = (ll)_shiftCols; j < _cols + (ll)_shiftCols; j++)
            cin >> _data[i][j];
}

template <typename T>
void write(vector<T> & _data, bool _shift) {
    for (ll i = (ll)_shift; i < _data.size(); i++)
        cout << _data[i] << " ";
    cout << endl;
}


//TODO: SOLUTION

void dfs(vvi & nei, int x, vb & been) {
    if (been[x])
        return;
    been[x] = true;
    for (int y = 1; y < nei.size(); y++) {
        if (nei[x][y] > 0)
            dfs(nei, y, been);
    }
}

bool isConnected(vvi & nei, int n) {
    vb been(n + 1, false);
    dfs(nei, 1, been);
    for (int i = 1; i <= n; i++) {
        if (!been[i])
            return false;
    }
    return true;
}

void solve() {
    int n, m; cin >> n >> m;

    vvi nei(n + 1, vi(n + 1, 0));
    vpii edges(m);
    for (int i = 0; i < m; i++) {
        cin >> edges[i].fi;
        cin >> edges[i].se;
        nei[edges[i].fi][edges[i].se]++;
        nei[edges[i].se][edges[i].fi]++;
    }

    ll ans = 0;
    for (int i = 0; i < m; i++) {
        for (int j = i + 1; j < m; j++) {
            for (int k = j + 1; k < m; k++) {
                int u1 = edges[i].fi;
                int v1 = edges[i].se;
                int u2 = edges[j].fi;
                int v2 = edges[j].se;
                int u3 = edges[k].fi;
                int v3 = edges[k].se;

                nei[u1][v1]--;
                nei[v1][u1]--;
                nei[u2][v2]--;
                nei[v2][u2]--;
                nei[u3][v3]--;
                nei[v3][u3]--;

                if (!isConnected(nei, n)) {
                    ans++;
                }

                nei[u1][v1]++;
                nei[v1][u1]++;
                nei[u2][v2]++;
                nei[v2][u2]++;
                nei[u3][v3]++;
                nei[v3][u3]++;
            }
        }
    }

    cout << ans << endl;
}


int main() {
    ios::sync_with_stdio(false);
    // TODO: Set value of this variable manually
    bool _multipleTestCases = false;

    if (_multipleTestCases) {
        ll t; cin >> t;
        while (t--)
            solve();
    }
    else {
        solve();
    }

    return 0;
}