#include<bits/stdc++.h>
using namespace std;
using ll=long long;
#define all(a) (a).begin(),(a).end()
#ifdef DEBUG
template<class T>
ostream& operator << (ostream &out,vector<T> a){
	out<<'[';
	for(T x:a)out<<x<<',';
	return out<<']';
}
template<class T>
vector<T> ary(T *a,int l,int r){
	return vector<T>{a+l,a+1+r};
}
template<class T>
void debug(T x){
	cerr<<x<<endl;
}
template<class T,class...S>
void debug(T x,S...y){
	cerr<<x<<' ',debug(y...);
}
#else
#define debug(...) void()
#endif
using ull=unsigned long long;
const int N=1e5+10;
int n,m,cur[N],rk[N],deg[N];
pair<int,int>e[N];
vector<int>to[N];
int idx;
ull f[N];
ll ans;
void solve(){
	for(int u=1;u<=m;u++){
		ans+=__builtin_popcountll(f[e[i].first]&f[e[i].second]);
	}
	fill(f,f+1+n,0);
}
int main(){
	scanf("%d%d",&n,&m);
	for(int i=1,u,v;i<=m;i++){
		scanf("%d%d",&u,&v);
		e[i]={u,v},deg[u]++,deg[v]++;
	}
	iota(cur,cur+1+n,0);
	sort(cur+1,cur+1+n,[&](int x,int y){
		return deg[x]<deg[y];
	});
	for(int i=1;i<=n;i++)rk[cur[i]]=i;
	for(int i=1;i<=m;i++){
		auto &[u,v]=e[i];
		if(rk[u]<rk[v])swap(u,v);
		to[u].push_back(v);
	}
	for(int u=1;u<=n;u++){
		static int from[N];
		for(int v:to[u])from[v]=u;
		for(int v:to[u]){
			for(int w:to[v])if(from[w]==u){
				f[w]|=1ull<<idx;
			}
			if(++idx==64)solve(),idx=0;
		}
	}
	solve();
	cout<<ans<<endl;
	return 0;
}

answer.code: In function ‘void solve()’:
answer.code:37:47: error: ‘i’ was not declared in this scope
   37 |                 ans+=__builtin_popcountll(f[e[i].first]&f[e[i].second]);
      |                                               ^
answer.code: In function ‘int main()’:
answer.code:53:23: warning: structured bindings only available with ‘-std=c++17’ or ‘-std=gnu++17’ [-Wc++17-extensions]
   53 |                 auto &[u,v]=e[i];
      |                       ^
answer.code:42:14: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   42 |         scanf("%d%d",&n,&m);
      |         ~~~~~^~~~~~~~~~~~~~
answer.code:44:22: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   44 |                 scanf("%d%d",&u,&v);
      |                 ~~~~~^~~~~~~~~~~~~~