#include <cstdlib>
#include <iostream>
#include <random>

int main(int argc, char *argv[]) {
    if (argc != 3) {
        std::cerr << "Usage: " << argv[0] << " n seed" << std::endl;
        return 1;
    }
    unsigned n = atoi(argv[1]);
    int seed = atoi(argv[2]) * n;

    std::mt19937 twister(seed);
    std::uniform_real_distribution<double> values(-1.0, +1.0);

    std::cout << n << "\n";
    for (unsigned i = 0; i < n; ++i) {
        std::cout << values(twister) << " " << values(twister) << " " << values(twister) << "\n";
    }
    return 0;
}