import java.util.*;
import java.math.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    sc.close();

    int ans = (N + 1) / 2;
    System.out.println(ans);
  }
} import java.util.*; util.* java import java.math.*; math.* java public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    sc.close();

    int ans = (N + 1) / 2;
    System.out.println(ans);
  }
} Main public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    sc.close();

    int ans = (N + 1) / 2;
    System.out.println(ans);
  } main {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    sc.close();

    int ans = (N + 1) / 2;
    System.out.println(ans);
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc sc.close() sc.close sc int ans = (N + 1) / 2; ans (N + 1) / 2 (N + 1) N 1 2 System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    sc.close();

    int ans = (N + 1) / 2;
    System.out.println(ans);
  }
} public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    sc.close();

    int ans = (N + 1) / 2;
    System.out.println(ans);
  }
} Main
import java.util.*;
import java.math.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    sc.close();

    int ans = (N + 1) / 2;
    System.out.println(ans);
  }
}