#include <iostream>

long round(double x) {
	int factor;
	if (x < 0) {
		factor = -1;
	} else {
		factor = 1;
	}
	return static_cast<long>(x + factor * 0.5);
}

int main() {
	double number;

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