题解 | #计算商场折扣#

import java.util.*;

public class Main {
    public static void main(String[] args) {
       Scanner console = new Scanner(System.in);
        int price = console.nextInt();
        int cost = 0;
        
        if (price >= 5000)
            cost = (int) (price * 0.6);
            //此处是小数，范围比整数大，不能自动类型转换，需要强制
        else if (price >= 2000)
            cost = (int) (price * 0.7);
        else if (price >= 500)
            cost = (int) (price * 0.8);
        else if (price >= 100)
            cost = (int) (price * 0.9);
        else cost = price;
        System.out.println(cost);
    }
}