CSP 试题编号201803-1 Java实现

import java.util.Scanner;

public class Main{

public static void main(String[] args) {
	Scanner input = new Scanner(System.in);
	int num = -1;
	int score = 0;
	int prior = 0;
	//当输入0时  游戏结束  计算分数
	while((num=input.nextInt())!=0){
		if(num==1){
			score = score+1;
			prior = 1;
		}
		else if(num==2){
			if(prior==0||prior==1){
				score = score+2;
				prior = 2;
			}
			else{
				score = score+prior+2;
				prior = prior+2;
			}
		}
	}
	System.out.println(score);
}

}