There are N people numbered 1 to N. Each person wears a red hat or a blue hat.

You are given a string s representing the colors of the people. Person i wears a red hat if s_i is `R`, and a blue hat if s_i is `B`.

Determine if there are more people wearing a red hat than people wearing a blue hat.

Constraints

* 1 \leq N \leq 100
* |s| = N
* s_i is `R` or `B`.

Input

Input is given from Standard Input in the following format:


N
s


Output

If there are more people wearing a red hat than there are people wearing a blue hat, print `Yes`; otherwise, print `No`.

Examples

Input

4
RRBR


Output

Yes


Input

4
BRBR


Output

No
def ex2019b():
    N = int(raw_input())
    S = raw_input()
    s = list(S)

    r = 0
    b = 0

    for i in range(N):
        if s[i] == "R":
            r = r + 1
        elif s[i] == "B":
            b = b + 1
    
    if r > b:
        print "Yes"
    else:
        print "No"

def main():
    ex2019b()
	
if __name__ == '__main__':
    main()