#include<bits/stdc++.h>
using namespace std;
int n,m,x,y,seen[4100],nr;
vector<int> v[4100];
int main()
{
    freopen("triplete.in","r",stdin);
    freopen("triplete.out","w",stdout);
    scanf("%d%d",&n,&m);
    for(int i=1;i<=m;i++)
    {
        scanf("%d%d",&x,&y);
        v[x].push_back(y);
        v[y].push_back(x);
    }
    for(int i=1;i<=n;i++)
    {
        for(int j=0;j<v[i].size();j++) seen[v[i][j]]=1;
        for(int j=0;j<v[i].size();j++)
        {
            if(v[i][j]>i)
            {
                int y=v[i][j];
            for(int k=0;k<v[y].size();k++)
            {
                if(v[y][k]>y && seen[v[y][k]]) nr++;
            }
            }
        }
        for(int j=0;j<v[i].size();j++) seen[v[i][j]]=0;
    }
    printf("%d\n",nr);
    return 0;
}