#include <iostream>
#include <cmath>
using namespace std;
int main()
{
setlocale(LC_CTYPE,"Russian");
double x,y;
cout << "x = ";cin >> x;
cout << std::abs((float)cos(x)) << endl;
cout << cos(x) << endl;
if(x>1) y=1+sqrt(std::abs(cos(x)));
else if((x>=(-0.5))&&(x<=1)) y=x+1;
else if(x<(-0.5)) y=1-x*x;
cout <<"y = " << y << endl;
cin >> x;
return 0;
}