Game of Fifteen - Toph.co - Beginner

import java.util.*;
class solution {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String n = sc.nextLine();
        if (n.equals("0")) {
            System.out.println(1);
        }
        else if (n.equals("1")) {
            System.out.println(15);
        }
        else {
            char c = n.charAt(n.length() - 1);
            int a = Character.getNumericValue(c);
            if (a%2 == 0) {
                System.out.println(25);
            } else {
                System.out.println(75);
            }
        }
    }
}