#include <bits/stdc++.h>

using namespace std;

typedef vector<int> vi;
typedef long long ll;
typedef pair<int,int> pii;

typedef int _loop_int;
#define REP(i,n) for(_loop_int i=0;i<(_loop_int)(n);++i)
#define FOR(i,a,b) for(_loop_int i=(_loop_int)(a);i<(_loop_int)(b);i++)
#define FORR(i,a,b) for(_loop_int i=(_loop_int)(b)-1;i>=(_loop_int)(a);--i)

#define ALL(a) (a).begin(),(a).end()
#define CHMIN(a,b) a=min((a),(b))
#define CHMAX(a,b) a=max((a),(b))

int n,m;
bool g[52][52];

int main(){
  scanf("%d%d",&n,&m);
  REP(i,m){
    int a,b;
    scanf("%d%d",&a,&b);
    g[a][b] = g[b][a] = true;
  }
  ll ans = 0;
  REP(a,n)REP(b,a)REP(c,n)REP(d,n){
    if(a!=c&&b!=c&&a!=d&&b!=d&&c!=d&&g[a][b]&&g[b][c]&&g[c][d]&&g[d][a]&&!g[a][c]&&!g[b][d]){
      // printf("%d %d %d %d\n",d,c,b,a);
      ans++;
    }
  }
  printf("%lld\n",ans/4);
}