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: Wrong Answer)

#include<bits/stdc++.h>
using namespace std;
#define ll  long long
#define scan(n) scanf("%d",&n)
#define ls(n) scanf("%lld",&n)
#define print(n) printf("%d",n)
#define pln(n) printf("%d\n",n)
#define lpln(n) printf("%lld\n",n)
#define rep(i,a,n) for(int i=a;i<n;i++)
#define rev(i,a,n) for(int i=n-1;i>=a;i--)
#define pb push_back
#define mp make_pair
#define F first
#define S second
#define gcd __gcd
#define tc           ll t1; cin>>t1; while(t1--)
#define inp         ll n; cin>>n; ll arr[n]; rep(i,0,n) cin>>arr[i];
#define vect vector<ll>
#define sortv(v)       sort(v.begin(),v.end())
#define lower(v,n)    lower_bound(v.begin(),v.end(),n)-v.begin()
#define upper(v,n)    upper_bound(v.begin(),v.end(),n)-v.begin()
#define all(v)        v.begin(),v.end()
#define bitcount(n) __builtin_popcount(n)
#define ln <<endl
#define inf          1e12+5
#define ninf         LONG_MIN
#define fast()         ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL)
const   ll mod=1e9+7;
const ll N=1e5+5;




int main() 
{ 
          fast();
          #ifndef ONLINE_JUDGE
          freopen("input.txt" , "r" , stdin);
          freopen("output.txt" , "w" , stdout);
          #endif

          string s;
          cin >> s;
          int c=0;
          rep(i,0,3)
          if(s[i]=='R')
            c++;
          cout<<c;
          
 
           return 0; 

}