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 1.8.0) (judge verdict: Wrong Answer)

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Scanner;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Scanner;

import java.util.*;

public class Main {
	static Scanner sc = new Scanner(System.in);
	static ArrayList<String> strList = new ArrayList<String>();
	static ArrayList<String> strList2 = new ArrayList<String>();
	static ArrayList<Integer> intList = new ArrayList<Integer>();
	static HashMap<String,Integer> Hmap = new HashMap<String,Integer>();
	public static void main(String[] args) {


		String strArray[] = sc.next().split("");
		int a = 0;
		for(String s : strArray) {
			if(s.equals("R")) {
				a++;
			}
		}
		System.out.println(a);
	}
}