#include <iostream>
#include <math.h>

long round(double x) {
	if (x < 0) {
		return -round(-x);
	}

	double fractional = fmod(x, 1.0);

	if (fractional >= 0.5) {
		return static_cast<long>(ceil(x));
	} else {
		return static_cast<long>(floor(x));
	}
}

int main() {
	double number;

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