Contest: Task: Related: TaskB

Score : $100$ points

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.

- $|S| = 3$
- Each character of $S$ is
`S`

or`R`

.

Input is given from Standard Input in the following format:

$S$

Print the maximum number of consecutive rainy days in the period.

RRS

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 $2$.

SSS

0

It was sunny throughout the period. We had no rainy days, so we should print $0$.

RSR

1

We had rain on the $1$-st and $3$-rd days - two "streaks" of one rainy day, so we should print $1$.