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 C++ (GCC 9.2.1) (judge verdict: Accepted)

#include <bits/stdc++.h>
#include <string>
using namespace std;
#define ll long long
#define endl "\n"
#define print_array(name,n) for(ll o=0;o<n;o++) cout<<name[o]<<" "
#define pb push_back
#define mp make_pair
#define ff first
#define ss second
#define inf 2e18
#define pll pair<ll,ll>
#define pii pair<int,int>
bool sortbysecond(const pair<int,int> &a,const pair<int,int> &b){
	return (a.ss>b.ss);
}
 
ll gcd(ll a,ll b){ if(b==0) return a; return gcd(b,a%b) ;} 

template <typename T>
string NumberTostring(T Number )
{
	ostringstream ss;
	ss<<Number;
	return ss.str();
}
 

 
int main()
{
	#ifndef ONLINE_JUDGE
	freopen("input.txt","r",stdin);
	freopen("output.txt","w",stdout);
	#endif
    ios_base::sync_with_stdio(false);
    cin.tie(0);cout.tie(0);
 	string s;
 	cin>>s;
 	int ans = 0;
 	int temp = 0;
 	for(int i=0;i<3;i++){
 		if(s[i]=='S'){
 			temp = 0;
 		}
 		else{
 			temp++;
 		}

 		ans = max(ans,temp);
 	}   
 	cout<<ans<<endl;
    return 0;
}