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>
#define fi first
#define se second
#define pb push_back
#define me(a,b) memset(a,b,sizeof(a))
#define INIT() std::ios::sync_with_stdio(false)
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int>P;
const int MAX_N=200000+5;
const int MAX_M=100000+5;
const int INF=0x7fffffff;
const int inf=1000000000;
const double EPS=1e-6;
const ull base=123;
const ll mod=1e9+7;
const double pi=4*atan(1.0);
char s[MAX_N];
int main()
{
    scanf("%s",s);
    int i;
    for(i=0;i<3;i++)
    {
        if(s[i]=='R')
            s[i]='S';
        else
        {
            s[i]='R';
        }
        
    }
    int ans=0;
    int sum=0;
    if(s[0]=='S')
    {
        if(s[1]=='S')
        {
            if(s[2]=='S')
            {
                cout<<3<<endl;
            }
            else
            {
                cout<<2<<endl;
            }
        }
        else
        {
            cout<<1<<endl;
        } 
    }
    else
    {
        if(s[1]=='S')
        {
            if(s[2]=='S')
            cout<<2<<endl;
            else
            {
                cout<<1<<endl;
            }
        }
        else
        {
            if(s[2]=='S')
            cout<<1<<endl;
            else
            {
                cout<<0<<endl;
            }
            
        }
        
    }
   // system("pause");
    
}