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)

// Created by js0805
#include <bits/stdc++.h>
#include<algorithm>
#include<vector>
#include<string>
#define ll long long
#define fr(a,b) for(ll i=a;i<b;i++)
#define prDouble(x) cout << fixed << setprecision(10) <<x
using namespace std;
typedef vector<int> vi;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef set<int> si;
typedef map<string, int> msi;
void solve() {
    string s;
    cin >> s;
    int r = 0;
    if(s[0]=='R' and  s[1]=='R' and s[2]=='R'){
        cout << 3;
        return;
    }
    else if (s[0] == 'R' ) {
        if(s[1]=='R'){
            cout << 2;
            return;
        }
        else{
            cout << 1 ;
            return;
        }
    }
    else if (s[1] == 'R'){
        if(s[2]=='R'){
            cout << 2;
            return;
        }
        else{
            cout << 1 ;
            return;
        }

    }
    else if (s[2] == 'R') {
        cout<< 1;
    }
    //cout << r ;

}
int main()
{
#ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);

    solve();

    return 0;
}