import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
double d= scanner.nextDouble();
//write your code here......
scanner.close();
//好家伙,这也太强了,简单粗暴
int i = (int)(d+0.5);
System.out.println(i);
}
}

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