    import java.util.ArrayDeque;
    import java.util.ArrayList;
    import java.util.Arrays;
    import java.util.Deque;
    import java.util.List;
    import java.util.Scanner;

    //
    public class Main {

        public static void main(String[] args) {
            Scanner sc = new Scanner(System.in);
            int N = sc.nextInt();
            int wk =0;
            int ans =0;
            ans=N/2;
            wk=N%2;
            if(wk==1){ans=ans+1;

            }

        System.out.println(ans);
        }
    } import java.util.ArrayDeque; ArrayDeque java.util import java.util.ArrayList; ArrayList java.util import java.util.Arrays; Arrays java.util import java.util.Deque; Deque java.util import java.util.List; List java.util import java.util.Scanner; Scanner java.util public class Main {

        public static void main(String[] args) {
            Scanner sc = new Scanner(System.in);
            int N = sc.nextInt();
            int wk =0;
            int ans =0;
            ans=N/2;
            wk=N%2;
            if(wk==1){ans=ans+1;

            }

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

            }

        System.out.println(ans);
        } main {
            Scanner sc = new Scanner(System.in);
            int N = sc.nextInt();
            int wk =0;
            int ans =0;
            ans=N/2;
            wk=N%2;
            if(wk==1){ans=ans+1;

            }

        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 int wk =0; wk 0 int ans =0; ans 0 ans=N/2 ans N/2 N 2 wk=N%2 wk N%2 N 2 if(wk==1){ans=ans+1;

            } wk==1 wk 1 {ans=ans+1;

            } ans=ans+1 ans ans+1 ans 1 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();
            int wk =0;
            int ans =0;
            ans=N/2;
            wk=N%2;
            if(wk==1){ans=ans+1;

            }

        System.out.println(ans);
        }
    } public class Main {

        public static void main(String[] args) {
            Scanner sc = new Scanner(System.in);
            int N = sc.nextInt();
            int wk =0;
            int ans =0;
            ans=N/2;
            wk=N%2;
            if(wk==1){ans=ans+1;

            }

        System.out.println(ans);
        }
    } Main
    import java.util.ArrayDeque;
    import java.util.ArrayList;
    import java.util.Arrays;
    import java.util.Deque;
    import java.util.List;
    import java.util.Scanner;

    //
    public class Main {

        public static void main(String[] args) {
            Scanner sc = new Scanner(System.in);
            int N = sc.nextInt();
            int wk =0;
            int ans =0;
            ans=N/2;
            wk=N%2;
            if(wk==1){ans=ans+1;

            }

        System.out.println(ans);
        }
    }