#include <iostream>
#include <string>
#include <vector>
#include <cmath>

int main(int argc, char* argv[])
{
    const int max_input_size = 256*1024;
    int input_size = 0;
    bool start_digits = false;
    std::vector<unsigned long long> values;

    char c = 0;
    while (!std::cin.eof() && input_size < max_input_size)
    {
        ++input_size;

        std::cin.get(c);
        if (isdigit(c))
        {
            if (start_digits)
            {
                values.back() *= 10;
                values.back() += (c - '0');
            }
            else
            {
                start_digits = true;
                values.push_back(c - '0');
            }
        }
        else start_digits = false;
    }

    std::cout.setf(std::ios::fixed);
    std::cout.precision(4);

    for (std::vector<unsigned long long>::reverse_iterator it = values.rbegin(); it != values.rend(); ++it)
    {
        std::cout << sqrt((long double)*it) << std::endl;
    }

    return 0;
}

What the fuck?!

Test 3, Time 0.15, Mem 184Kb

Task's author, please, move your hands from ass!

O'zingni bos bacha