Java实现 洛谷 P1422 小玉家的电费

import java.util.*;
public class Main {

	public static void main(String[] args) {

		Scanner in = new Scanner (System.in);

		int ele = in.nextInt();
		double out;

		if (ele <= 150)
		{
			out = 0.4463*ele;
		}

		else if ((150 < ele) && (ele <= 400))
		{
			out = 66.945 + 0.4663 * (ele - 150);
		}

		else
		{
			out = 150*0.4463 + 250*0.4663 + (ele - 400)*0.5663;
		}

		System.out.println(String.format("%.1f", out));

	}

}