import java.util.Scanner;

public class problem1 {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int N = scan.nextInt();
        if (N < 10) {
            System.out.println(N+1);
        } else {
        System.out.println(10);
        }
    }
}

problem.java:4: error: class problem1 is public, should be declared in a file named problem1.java
public class problem1 {
       ^
1 error