#include <cmath>
#include <limits>
#include <iostream>
int main()
{
    for(int i = 0; i < 100; ++i)
    {
        double root = std::sqrt(i);
        if( std::abs(root - std::floor(root)) < root*std::numeric_limits<double>::epsilon() )
            std::cout << i << '\n';
    }
}