#include <iostream>
#include <cfenv>
 
int main()
{
    double one_third = 1.0/3.0;
    std::cout.precision(4);

    std::fesetround(FE_DOWNWARD);
    std::cout << one_third << std::endl;
 
    std::fesetround(FE_UPWARD);
    std::cout << one_third << std::endl;
 
    return (0);
}