#include <iostream>
int main() {
std::cout << "+0.0 + +0.0 == " << +0.0 + +0.0 << std::endl;
std::cout << "+0.0 + -0.0 == " << +0.0 + -0.0 << std::endl;
std::cout << "-0.0 + +0.0 == " << -0.0 + +0.0 << std::endl;
std::cout << "-0.0 + -0.0 == " << -0.0 + -0.0 << std::endl;
return 0;
}
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