
import java.util.Scanner;

public class Main{
public static void main(String[]args){
Scanner sc = new Scanner(System.in);
int A = sc.nextInt();
System.out.print(A / 2 + A % 2);
}
}


/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz