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

struct dsu {
    public:
    int csz;
    dsu() : _n(0) {}
    dsu(int n) : _n(n), csz(n), parent_or_size(n, -1) {}

    int merge(int a, int b) {
        assert(0 <= a && a < _n);
        assert(0 <= b && b < _n);
        int x = leader(a), y = leader(b);
        if (x == y) return x;
        if (-parent_or_size[x] < -parent_or_size[y]) std::swap(x, y);
        csz--;
        parent_or_size[x] += parent_or_size[y];
        parent_or_size[y] = x;
        return x;
    }

    bool same(int a, int b) {
        assert(0 <= a && a < _n);
        assert(0 <= b && b < _n);
        return leader(a) == leader(b);
    }

    int leader(int a) {
        assert(0 <= a && a < _n);
        if (parent_or_size[a] < 0) return a;
        return parent_or_size[a] = leader(parent_or_size[a]);
    }

    int size(int a) {
        assert(0 <= a && a < _n);
        return -parent_or_size[leader(a)];
    }

    std::vector<std::vector<int>> groups() {
        std::vector<int> leader_buf(_n), group_size(_n);
        for (int i = 0; i < _n; i++) {
            leader_buf[i] = leader(i);
            group_size[leader_buf[i]]++;
        }
        std::vector<std::vector<int>> result(_n);
        for (int i = 0; i < _n; i++) {
            result[i].reserve(group_size[i]);
        }
        for (int i = 0; i < _n; i++) {
            result[leader_buf[i]].push_back(i);
        }
        result.erase(
            std::remove_if(result.begin(), result.end(),
                           [&](const std::vector<int>& v) { return v.empty(); }),
            result.end());
        return result;
    }

    private:
    int _n;
    // root node: -1 * component size
    // otherwise: parent
    std::vector<int> parent_or_size;
};

int main() {
    int n, m;
    cin >> n >> m;
    vector<vector<int>> A(n, vector<int>(n, 1 << 29));
    for(int i = 0; i < m; i++){
        int u, v;
        cin >> u >> v;
        u--, v--;
        A[u][v] = A[v][u] = 1;
    }
    for(int i = 0; i < n; i++) A[i][i] = 0;
    for(int i = 0; i < n; i++){
        for(int j = 0; j < n; j++){
            for(int k = 0; k < n; k++){
                A[j][k] = min(A[j][k], A[j][i] + A[i][k]);
            }
        }
    }
    int ans = n * (n - 1) * (n - 2) / 6;
    for(int i = 0; i < n; i++){
        for(int j = i + 1; j < n; j++){
            for(int k = j + 1; k < n; k++){
                ans -= (A[i][j] == 2 || A[j][k] == 2 || A[k][i] == 2);
            }
        }
    }
    cout << ans << '\n';
}