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
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.