1public class Main {
2    public static void main(String[] args) {
3        int x = 15;
4        if (x > 10) {
5            if (x > 20) {
6                System.out.println("big");
7            } else {
8                System.out.println("medium");
9            }
10        } else {
11            System.out.println("small");
12        }
13    }
14}