#include "testlib.h"
#include <bits/stdc++.h>
using namespace std;
using ll = long long;

#define all(a) begin(a), end(a)

const ll min_t = 1;
const ll max_t = 1'000;

const ll min_n = 2;
const ll max_n = 500;
const ll max_sum_n_2 = 250'000;

const ll min_ab = 0;

int main(){
    registerValidation();
    int testcases = inf.readInt(min_t, max_t);
    inf.readEoln();

    int sum_n_2 = 0;
    for(int t = 0; t < testcases; t++) {
        int n = inf.readInt(min_n, max_n);
        assert(n % 2 == 0);
        inf.readSpace();
        sum_n_2 += n * n;

        inf.readInt(min_ab, n);
        inf.readSpace();
        inf.readInt(min_ab, n);
        inf.readEoln();
    }

    inf.readEof();

    assert(sum_n_2 <= max_sum_n_2);
}