#include <iostream>

// This method is not as good as the one in 2.cc because it uses the
// ?: ternary operator, which is basically a more succinct (and more
// confusing) way of writing an if statement inside an expression.
// If you don't understand what this does or how it works, you don't
// need to worry about it.

long round(double x) {
	return static_cast<long>(x + ((x < 0) ? -1 : 1) * 0.5);
}

int main() {
	double number;

	while (std::cin >> number) {
		std::cout << round(number) << std::endl;
	}
}