#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<int> vint;
typedef pair<int,int> pint;
typedef vector<pint> vpint;
#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++)
#define all(v) (v).begin(),(v).end()
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define chmax(a, b) a = (((a)<(b)) ? (b) : (a))
#define chmin(a, b) a = (((a)>(b)) ? (b) : (a))
const int MOD = 1e9 + 7;
const int INF = 1e9;
const ll INFF = 1e18;

int G[55][55];
int n, m;
int main(void){
	cin >> n >> m;
	rep(i, m){
		int a, b; cin >> a >> b;
		G[a][b] = G[b][a] = 1;
	}
	int cnt = 0;
	rep(i, n)reps(j, i + 1, n)reps(k, j + 1, n)reps(l, k + 1, n){
		int d1 = G[i][j] + G[i][k] + G[i][l];
		int d2 = G[j][i] + G[j][k] + G[j][l];
		int d3 = G[k][i] + G[k][j] + G[k][l];
		int d4 = G[l][i] + G[l][j] + G[l][k];
		if(d1 == 2 && d2 == 2 && d3 == 2 && d4 == 2) cnt++;
	}

	printf("%d\n", cnt);
	return 0;
}