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: Runtime Error)

#include<stdio.h>
 
int main(){
  int x,k,d;
  scanf("%d %d %d",&x,&k,&d);
  
  int y[k+1];
  for(int i=0;i<(k+1);i++){
    y[i]=x+d*i-d*(k-i);
  }
  for(int i=0;i<k;i++){
    for(int j=k;j>i;j--){
      int t=y[j];
      y[j]=y[j-1];
      y[j-1]=t;
    }
  }
  if(y[k]<0){
    printf("%d\n",-y[k]);
  }else{
    printf("%d\n",y[k]);
  }
  return 0;
}