#include <iostream>

// The math and time libraries are needed.
#include <cmath>

using namespace std;

int main() {
    double x=1.8;
    int y=floor(x);
    int z=ceil(x);
    int i=abs(-5.0);
    int q=sqrt(9);
    int r=pow(3,2);

    cout << y << endl;
    cout << z << endl;
    cout << i << endl;
    cout << q << endl;
    cout << r << endl;

    return 0;
}