Problem:
Score : 100 points

Problem Statement

We have weather records at AtCoder Town for some consecutive three days. A string of length 3, S, represents the records - if the i-th character is S, it means it was sunny on the i-th day; if that character is R, it means it was rainy on that day.

Find the maximum number of consecutive rainy days in this period.

Constraints

|S| = 3

Each character of S is S or R.

Input

Input is given from Standard Input in the following format:

S

Output

Print the maximum number of consecutive rainy days in the period.

Sample Input 1

RRS

Sample Output 1

2

We had rain on the 1-st and 2-nd days in the period. Here, the maximum number of consecutive rainy days is 2, so we should print 2.

Sample Input 2

SSS

Sample Output 2

0

It was sunny throughout the period. We had no rainy days, so we should print 0.

Sample Input 3

RSR

Sample Output 3

1

We had rain on the 1-st and 3-rd days - two "streaks" of one rainy day, so we should print 1.

Solution in Java (OpenJDK 11.0.6) (judge verdict: Accepted)

import java.util.*;
public class Main{
	public static void main(String[] args){
    	Scanner sc = new Scanner(System.in);
      	String s = sc.next();
      	int count;
      	if(s.charAt(0)=='S' &&s.charAt(1)=='S' &&s.charAt(2)=='S') count = 0;
      	else if((s.charAt(0)=='R' &&s.charAt(1)=='R' &&s.charAt(2)=='S')
                ||(s.charAt(0)=='S' &&s.charAt(1)=='R' &&s.charAt(2)=='R')) count= 2;
      	else if (s.charAt(0)=='R' &&s.charAt(1)=='R' &&s.charAt(2)=='R') count = 3;
      	else count = 1;
      	
      	System.out.println(count);
    }
}