#include <fstream>
#include <bitset>

using namespace std;

ifstream fin("triplete.in");
ofstream fout("triplete.out");

int n, m;
bitset<4100> g[4100];
int nr[4100];
long long sol;

int main() {
    fin >> n >> m;
    for (int i = 1; i <= n; i++) {
        int x, y;
        fin >> x >> y;
        g[x][y] = 1;
        g[y][x] = 1;
    }
    for (int i = 1; i <= 4096; i++)
        for (int j = 0; j <= 12; j++)
            if(i & (1 << j))
                nr[i]++;
    for (int i = 1; i <= n; i++)
        for (int j = 1; j <= m; j++)
            if(g[i][j] == 1) {
                bitset<4100> x = g[i] & g[j];
                sol += x.count();
            }
    fout << sol / 3 << '\n';
}