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: Accepted)

import java.util.Scanner;

public class Main {

    public static int findMaxConsecutiveDays(String weatherString){
        int maxDays =0;

        char[] weatherChar = weatherString.toCharArray();
//        for(char character:weatherChar){
//            System.out.println(character);
//        }

        int temporaryCount = 0;
        for(int i =0 ;i<weatherChar.length;i++){
            if(weatherChar[i] == 'R'){
                temporaryCount++;
            }else{
                if(temporaryCount>maxDays) {
                    maxDays = temporaryCount;
                }
                temporaryCount =0;
            }
        }
        if(temporaryCount>maxDays) {
            maxDays = temporaryCount;
        }
        return maxDays;
    }

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String str = scanner.next();
        System.out.println(findMaxConsecutiveDays(str));
        scanner.close();
    }
}