import java.util.Scanner;
public class Main{
    public static void main(String args[]){
        Scanner scan = new Scanner(System.in);
        int N = scan.nextInt();
        if(N%2==1)System.out.printf("%d",N/2+1);
        else System.out.printf("%d",N/2);

    }
} import java.util.Scanner; Scanner java.util public class Main{
    public static void main(String args[]){
        Scanner scan = new Scanner(System.in);
        int N = scan.nextInt();
        if(N%2==1)System.out.printf("%d",N/2+1);
        else System.out.printf("%d",N/2);

    }
} Main public static void main(String args[]){
        Scanner scan = new Scanner(System.in);
        int N = scan.nextInt();
        if(N%2==1)System.out.printf("%d",N/2+1);
        else System.out.printf("%d",N/2);

    } main {
        Scanner scan = new Scanner(System.in);
        int N = scan.nextInt();
        if(N%2==1)System.out.printf("%d",N/2+1);
        else System.out.printf("%d",N/2);

    } Scanner scan = new Scanner(System.in); scan new Scanner(System.in) int N = scan.nextInt(); N scan.nextInt() scan.nextInt scan if(N%2==1)System.out.printf("%d",N/2+1);
        else System.out.printf("%d",N/2); N%2==1 N%2 N 2 1 System.out.printf("%d",N/2+1) System.out.printf System.out System System.out "%d" N/2+1 N/2 N 2 1 System.out.printf("%d",N/2) System.out.printf System.out System System.out "%d" N/2 N 2 String args[] args public class Main{
    public static void main(String args[]){
        Scanner scan = new Scanner(System.in);
        int N = scan.nextInt();
        if(N%2==1)System.out.printf("%d",N/2+1);
        else System.out.printf("%d",N/2);

    }
} public class Main{
    public static void main(String args[]){
        Scanner scan = new Scanner(System.in);
        int N = scan.nextInt();
        if(N%2==1)System.out.printf("%d",N/2+1);
        else System.out.printf("%d",N/2);

    }
} Main
import java.util.Scanner;
public class Main{
    public static void main(String args[]){
        Scanner scan = new Scanner(System.in);
        int N = scan.nextInt();
        if(N%2==1)System.out.printf("%d",N/2+1);
        else System.out.printf("%d",N/2);

    }
}