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

#define int long long

typedef pair<int,int>pint;
typedef vector<int>vint;
typedef vector<pint>vpint;
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define all(v) (v).begin(),(v).end()
#define rep(i,n) for(int i=0;i<(n);i++)
#define reps(i,f,n) for(int i=(f);i<(n);i++)
#define each(it,v) for(__typeof((v).begin()) it=(v).begin();it!=(v).end();it++)
template<class T,class U>void chmin(T &t,U f){if(t>f)t=f;}
template<class T,class U>void chmax(T &t,U f){if(t<f)t=f;}

int N,M;
int G[55][55];

signed main(){
    cin>>N>>M;
    rep(i,M){
        int a,b;
        cin>>a>>b;
        G[a][b]=G[b][a]=1;
    }

    int ans=0;
    rep(i,N)rep(j,N)rep(k,N)rep(l,N){
        if(i==j||i==k||i==l||j==k||j==l||k==l)continue;
        if(G[i][j]&&G[j][k]&&G[k][l]&&G[l][i]&&!G[i][k]&&!G[j][l])ans++;
    }
    cout<<ans/8<<endl;
    return 0;
}