import java.util.*;

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

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

        int res = N / 2;
        if(N % 2 != 0){
            res++;
        } 
        
        sc.close();
        
        System.out.println(res);
    } main {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();

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

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

        int res = N / 2;
        if(N % 2 != 0){
            res++;
        } 
        
        sc.close();
        
        System.out.println(res);
    }
} Main
import java.util.*;

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

        int res = N / 2;
        if(N % 2 != 0){
            res++;
        } 
        
        sc.close();
        
        System.out.println(res);
    }
}