import java.util.Scanner;

class Main {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		double N = scan.nextInt();
		if (N == 1) {
			System.out.println(1);
		} else {
			double answer = Math.ceil(N / 2);
			System.out.println((int) answer);
		}
	}

}
/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