#include <iostream>
#include <vector>
using namespace std;

int main(){
	int n, m, ans = 0;
	cin >> n >> m;
	bool edge[n][n]{};
	while(m--){
		int a, b;
		cin >> a >> b;
		edge[a][b] = edge[b][a] = true;
	}
	for(int i = 0; i < n; i++) for(int j = i + 1; j < n; j++) for(int k = j + 1; k < n; k++) for(int l = k + 1; l < n; l++){
		if(edge[i][j] + edge[i][k] + edge[i][l] != 2) continue;
		if(edge[j][i] + edge[j][k] + edge[j][l] != 2) continue;
		if(edge[k][i] + edge[k][j] + edge[k][l] != 2) continue;
		if(edge[l][i] + edge[l][j] + edge[l][k] != 2) continue;
		ans++;
	}
	cout << ans << endl;
}