#include <cmath>
#include <iostream>
class Solution {
public:
int mySqrt(int x) {
if (x <= 0) {
return 0;
}
return int(sqrt(x));
}
};
int main() {
Solution ss;
std::cout << ss.mySqrt(8) << std::endl;
std::cout << ss.mySqrt(4) << std::endl;
return 0;
}