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<stdio.h>
#include<string.h>

int main(void) {
	char  a[256], b[256], c[256];
	memset(a, 0, sizeof(a));
	memset(b, 0, sizeof(b));
	memset(c, 0, sizeof(c));
	int count = 0;
	scanf("%c%c%c", a, b, c);
	if (strcmp(a , "R")==0&&strcmp(b , "R")==0&&strcmp(c , "R")==0) {
		count = count + 3;;
	}
	else if (strcmp(a, "R") == 0 && strcmp(b, "R")) {
		count = count + 2;
	}
	else if (strcmp(a, "R") == 0 && strcmp(c, "R") == 0) {
		count = count + 2;
	}
	else if (strcmp(b, "R") == 0 && strcmp(c, "R") == 0) {
		count = count + 2;
	}
	else if (strcmp(a, "R") == 0 || strcmp(b, "R") == 0 || strcmp(c, "R") == 0) {
		count++;
	}

	printf("%d", count);

	return 0;
}