#include<iostream>
using namespace std;
int path[55][55];

int check(int a,int b,int c,int d){
	if(a==b)return 1;
	if(a==c)return 1;
	if(a==d)return 1;
	if(b==c)return 1;
	if(b==d)return 1;
	if(c==d)return 1;
	return 0;
}

int main(){
	int n,m;
	int i,j,k,l;
	int a,b,c,s=0;
	cin>>n>>m;
	for(i=0;i<m;i++){
		cin>>a>>b;
		path[a][b]=1;
		path[b][a]=1;
	}
	for(i=0;i<n;i++){
		for(j=0;j<n;j++){
			for(k=0;k<n;k++){
				for(l=0;l<n;l++){
					if(check(i,j,k,l)==1)continue;
					a=path[i][j]+path[j][k]+path[k][l]+path[l][i];
					a-=path[i][k]+path[j][l];
					if(a==4)s++;
				}
			}
		}
	}
	cout<<s/8<<endl;
	return 0;
}