#include <iostream>

int main()
{
    int x = 27;
    for(int i=0; i < 10; ++i)
    {
        std::cout << i << " : " << i*1000000000 << " : " << x << std::endl;
        if(x==1) break;
        x = x%2 ? x*3+1 : x/2;
    }
}