ZZULIOJ 1019: 公园门票，Java

1019: 公园门票

import java.util.*;
public class Main {
    public static void main(String[] args) {
    Scanner cin = new Scanner(System.in);int number=cin.nextInt();if(number>=30)System.out.println(number*48);elseSystem.out.println(number*50);}
}