JAVA CCF-201812-1 小明上学

欢迎访问我的CCF认证解题目录

题目描述

思路过程

注意黄灯的话还要加上红灯就行了

代码

import java.util.Scanner;

public class Main {
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner in = new Scanner(System.in);
		int r = in.nextInt(), y = in.nextInt(), g = in.nextInt();
		int n = in.nextInt();
		int sum = 0;
		
		//按类型区分
		for ( int i = 0; i < n; i++ ) {
			int type = in.nextInt(), time = in.nextInt();
			switch ( type ) {
			case 0: sum+=time; break;
			case 1: sum+=time; break;
			case 2: sum+=r+time; break;
			}
		}
		System.out.println(sum);
	}

}