T5

public class Reverse {
    public static int Reverse(int n, int i) {
       if (n == 0){
            return i;
       } else {
           return Reverse( n/10, i*10 + n%10 );
       }
    }
    public static void main(String[] args) {
        System.out.println(Reverse(23234423, 0));
    }
}
//////////////////////////////////////////////////
import java.util.Scanner;

public class Reverse {
    public static void Reverse() {
        Scanner scan = new Scanner(System.in);
        int n = scan.nextInt();
        if (n > 0) {
            if (n % 2 == 1) {
                System.out.println(n);
                Reverse();
            } else {
                Reverse();
            }
        }
    }
    public static void main(String[] args) {
        Reverse();
    }
}

/////////////////////////////////////////////////
import java.util.Scanner;

public class Reverse {
    public static int Reverse() {
        Scanner scan = new Scanner(System.in);
        int n = scan.nextInt();
        if (n == 1) {
            int n2 = scan.nextInt();
            if (n2 == 1) {
                return Reverse() + n + n2;
            }
            else {
                int n3 = scan.nextInt();
                if (n3 == 1) {
                    return Reverse() + n + n2 + n3;
                } else {
                    return n + n2 + n3;
                }
            }
        }
        else {
            int n2 = scan.nextInt();
            if (n2 == 1) {
                return Reverse() + n + n2;
            } else {
                return n + n2;
            }
        }
    }
    public static void main(String[] args) {
        System.out.println(Reverse());
    }
}
//////////////////////////////////////////////////////