

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub\
		Scanner s = new Scanner(System.in);
		int n = s.nextInt();
		if(n>=1 && n<=100) {
		if(n%2 == 0) {
			System.out.println(n/2);
		}else {
			System.out.println(n/2 +1);
		}
		}

	}

} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub\
		Scanner s = new Scanner(System.in);
		int n = s.nextInt();
		if(n>=1 && n<=100) {
		if(n%2 == 0) {
			System.out.println(n/2);
		}else {
			System.out.println(n/2 +1);
		}
		}

	}

} Main public static void main(String[] args) {
		// TODO Auto-generated method stub\
		Scanner s = new Scanner(System.in);
		int n = s.nextInt();
		if(n>=1 && n<=100) {
		if(n%2 == 0) {
			System.out.println(n/2);
		}else {
			System.out.println(n/2 +1);
		}
		}

	} main {
		// TODO Auto-generated method stub\
		Scanner s = new Scanner(System.in);
		int n = s.nextInt();
		if(n>=1 && n<=100) {
		if(n%2 == 0) {
			System.out.println(n/2);
		}else {
			System.out.println(n/2 +1);
		}
		}

	} Scanner s = new Scanner(System.in); s new Scanner(System.in) int n = s.nextInt(); n s.nextInt() s.nextInt s if(n>=1 && n<=100) {
		if(n%2 == 0) {
			System.out.println(n/2);
		}else {
			System.out.println(n/2 +1);
		}
		} n>=1 && n<=100 n>=1 n 1 n<=100 n 100 {
		if(n%2 == 0) {
			System.out.println(n/2);
		}else {
			System.out.println(n/2 +1);
		}
		} if(n%2 == 0) {
			System.out.println(n/2);
		}else {
			System.out.println(n/2 +1);
		} n%2 == 0 n%2 n 2 0 {
			System.out.println(n/2);
		} System.out.println(n/2) System.out.println System.out System System.out n/2 n 2 {
			System.out.println(n/2 +1);
		} System.out.println(n/2 +1) System.out.println System.out System System.out n/2 +1 n/2 n 2 1 String[] args args public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub\
		Scanner s = new Scanner(System.in);
		int n = s.nextInt();
		if(n>=1 && n<=100) {
		if(n%2 == 0) {
			System.out.println(n/2);
		}else {
			System.out.println(n/2 +1);
		}
		}

	}

} public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub\
		Scanner s = new Scanner(System.in);
		int n = s.nextInt();
		if(n>=1 && n<=100) {
		if(n%2 == 0) {
			System.out.println(n/2);
		}else {
			System.out.println(n/2 +1);
		}
		}

	}

} Main


import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub\
		Scanner s = new Scanner(System.in);
		int n = s.nextInt();
		if(n>=1 && n<=100) {
		if(n%2 == 0) {
			System.out.println(n/2);
		}else {
			System.out.println(n/2 +1);
		}
		}

	}

}
