#include <bits/stdc++.h>
using namespace std;
typedef signed long long ll;

#undef _P
#define _P(...) (void)printf(__VA_ARGS__)
#define FOR(x,to) for(x=0;x<(to);x++)
#define FORR(x,arr) for(auto& x:arr)
#define ITR(x,c) for(__typeof(c.begin()) x=c.begin();x!=c.end();x++)
#define ALL(a) (a.begin()),(a.end())
#define ZERO(a) memset(a,0,sizeof(a))
#define MINUS(a) memset(a,0xff,sizeof(a))
//-------------------------------------------------------

int N,M;
int mat[51][51];

void solve() {
	int i,j,k,l,r,x,y; string s;
	
	cin>>N>>M;
	FOR(i,M) {
		cin>>x>>y;
		mat[x][y]=mat[y][x]=1;
	}
	int a,b,c,d;
	ll ret=0;
	FOR(a,N) FOR(b,N) FOR(c,N) FOR(d,N) {
		if(a==b) continue;
		if(a==c) continue;
		if(a==d) continue;
		if(b==c) continue;
		if(b==d) continue;
		if(c==d) continue;
		if(mat[a][c]) continue;
		if(mat[b][d]) continue;
		if(mat[a][b]&&mat[b][c]&&mat[c][d]&&mat[d][a]) ret++;
	}
	cout<<ret/8<<endl;
	
	
}


int main(int argc,char** argv){
	string s;int i;
	if(argc==1) ios::sync_with_stdio(false), cin.tie(0);
	FOR(i,argc-1) s+=argv[i+1],s+='\n';
	FOR(i,s.size()) ungetc(s[s.size()-1-i],stdin);
	solve(); return 0;
}