#include <iostream>

int main()
{
    //Realized my old way was stupid.
    int a = 0, b = 0, c = 0, i;

    for(i=0;i<20;i++)
    {           
        a += 3;
        b += 4;
        c += 5;

        std::cout << "[" << a << " " << b << " " << c << "]\n";
    }

    return 0;
}