Red or Blue

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

inputFormat

Input

Input is given from Standard Input in the following format:

N s

outputFormat

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

样例

4
RRBR

Yes