#include <bits/stdc++.h> 
using namespace std;

ifstream fin("puteri.in");
ofstream fout("puteri.out");

bool mat[129][129][129];
unsigned a[100001], b[100001], c[100001];
int n;

int cmmdc(int a, int b)
{
    while (b)
    {
        int r = a % b;
        a = b;
        b = r;
    }

    return a;
}

int main()
{
    fin >> n;

    for (int i = 0; i <= 128; i++)
        for (int j = 0; j <= 128; j++)
            for (int k = 0; k <= 128; k++)
                mat[i][j][k] = (cmmdc(i, cmmdc(j, k)) != 1);

    for (int i = 1; i <= n; i++)
        fin >> a[i] >> b[i] >> c[i];

    long long nr = 0;

    for (int i = 1; i <= n; i++)
        for (int j = i + 1; j <= n; j++)
            if (true)
                nr++;

    fout << nr;

    return 0;
}