信号报告

无线电台的RS制信号报告是由三两个部分组成的：

R(Readability) 信号可辨度即清晰度.

S(Strength)    信号强度即大小.

其中R位于报告第一位，共分5级，用1—5数字表示.

1---Unreadable

2---Barely readable, occasional words distinguishable

3---Readable with considerable difficulty

4---Readable with practically no difficulty

5---Perfectly readable

报告第二位是S，共分九个级别，用1—9中的一位数字表示

1---Faint signals, barely perceptible

2---Very weak signals

3---Weak signals

4---Fair signals

5---Fairly good signals

6---Good signals

7---Moderately strong signals

8---Strong signals

9---Extremely strong signals

现在，你的程序要读入一个信号报告的数字，然后输出对应的含义。如读到59，则输出：

Extremely strong signals, perfectly readable.

输入格式:

一个整数，信号报告。整数的十位部分表示可辨度，个位部分表示强度。输入的整数范围是[11,59]内有效的数字，这个范围外的数字不可能出现在测试数据中。

输出格式：

一句话，表示这个信号报告的意义。按照题目中的文字，先输出表示强度的文字，跟上逗号和空格，然后是表示可辨度的文字，跟上句号。注意可辨度的句子的第一个字母是小写的。注意这里的标点符号都是英文的。

输入样例：

33

输出样例：

Weak signals, readable with considerable difficulty.

import java.util.Scanner;

public class testSignal {
	public static void main(String []args){
		        Scanner scan = new Scanner(System.in);
		      
		        int sign = scan.nextInt(); 
		        boolean flag = false;
		        String str1 = null,str2 = null;
		        if(sign < 60 && sign >10){
		            flag = true;
		            int s = sign/10;
		            int g = sign%10;
		            switch(g){
		            case 1:
		                str1 = "Faint signals, barely perceptible";
		                break;
		            case 2:
		                str1 = "Very weak signals";
		                break;
		            case 3:
		                str1 = "Weak signals";
		                break;
		            case 4:
		                str1 = "Fair signals";
		                break;
		            case 5:
		                str1 = "Fairly good signals";
		                break;
		            case 6:
		                str1 = "Good signals";
		                break;
		            case 7:
		                str1 = "Moderately strong signals";
		                break;
		            case 8:
		                str1 = "Strong signals";
		                break;
		            case 9:
		                str1 = "Extremely strong signals";
		                break;
		            default:
		                flag = false;
		                break;
		            }
		             
		            switch(s){
		            case 1:
		                str2 = "unreadable.";
		                break;
		            case 2:
		                str2 = "barely readable, occasional words distinguishable.";
		                break;
		            case 3:
		                str2 = "readable with considerable difficulty.";
		                break;
		            case 4:
		                str2 = "readable with practically no difficulty.";
		                break;
		            case 5:
		                str2 = "perfectly readabley";
		                break;
		            }
		            
		        }
		        if(flag){
		            System.out.println(str1 +", " + str2);
		        }
		        else{
		            System.out.println("errors");
		        }
		    }
}