#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(int)(n);i++)
using namespace std;
using ll = long long ;
using P = pair<int,int> ;
using pll = pair<long long,long long>;
constexpr int INF = 1e9;
constexpr long long LINF = 1e17;
constexpr int MOD = 1000000007;
constexpr double PI = 3.14159265358979323846;
int n,m;
bool graph[52][52];

bool four(vector<int> f){
    vector<int> c(4,0);
    rep(i,4)rep(j,i){
        if(graph[f[i]][f[j]]) c[i]++,c[j]++;
    }
    rep(i,4){
        if(c[i]!=2) return false;
    }
    return true;
}

int main(){
    cin >> n >> m;
    rep(i,m){
        int a,b;
        cin >> a >> b;
        graph[a][b] = true;
        graph[b][a] = true;
    }
    int ans = 0;
    rep(a,n)rep(b,a)rep(c,b)rep(d,c){
        if(four({a,b,c,d})) ++ ans;
    }
    cout << ans << endl;
    return 0;
}