import java.util.*;
public class Main{
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N =sc.nextInt();
    int cnt = 0;
    if(N%2 == 0){
      cnt = N/2;
      System.out.println(cnt);
    }else{
      cnt=(int)(N/2) +1;
      System.out.println(cnt);
    }
    
  }


} import java.util.*; util.* java public class Main{
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N =sc.nextInt();
    int cnt = 0;
    if(N%2 == 0){
      cnt = N/2;
      System.out.println(cnt);
    }else{
      cnt=(int)(N/2) +1;
      System.out.println(cnt);
    }
    
  }


} Main public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N =sc.nextInt();
    int cnt = 0;
    if(N%2 == 0){
      cnt = N/2;
      System.out.println(cnt);
    }else{
      cnt=(int)(N/2) +1;
      System.out.println(cnt);
    }
    
  } main {
    Scanner sc = new Scanner(System.in);
    int N =sc.nextInt();
    int cnt = 0;
    if(N%2 == 0){
      cnt = N/2;
      System.out.println(cnt);
    }else{
      cnt=(int)(N/2) +1;
      System.out.println(cnt);
    }
    
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N =sc.nextInt(); N sc.nextInt() sc.nextInt sc int cnt = 0; cnt 0 if(N%2 == 0){
      cnt = N/2;
      System.out.println(cnt);
    }else{
      cnt=(int)(N/2) +1;
      System.out.println(cnt);
    } N%2 == 0 N%2 N 2 0 {
      cnt = N/2;
      System.out.println(cnt);
    } cnt = N/2 cnt N/2 N 2 System.out.println(cnt) System.out.println System.out System System.out cnt {
      cnt=(int)(N/2) +1;
      System.out.println(cnt);
    } cnt=(int)(N/2) +1 cnt (int)(N/2) +1 (int)(N/2) N 2 1 System.out.println(cnt) System.out.println System.out System System.out cnt String[] args args public class Main{
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N =sc.nextInt();
    int cnt = 0;
    if(N%2 == 0){
      cnt = N/2;
      System.out.println(cnt);
    }else{
      cnt=(int)(N/2) +1;
      System.out.println(cnt);
    }
    
  }


} public class Main{
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N =sc.nextInt();
    int cnt = 0;
    if(N%2 == 0){
      cnt = N/2;
      System.out.println(cnt);
    }else{
      cnt=(int)(N/2) +1;
      System.out.println(cnt);
    }
    
  }


} Main
import java.util.*;
public class Main{
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N =sc.nextInt();
    int cnt = 0;
    if(N%2 == 0){
      cnt = N/2;
      System.out.println(cnt);
    }else{
      cnt=(int)(N/2) +1;
      System.out.println(cnt);
    }
    
  }


}
