Problem:
Score : 200 points

Problem Statement

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.

Sample Input 1

4
RRBR

Sample Output 1

Yes

There are three people wearing a red hat, and one person wearing a blue hat.

Since there are more people wearing a red hat than people wearing a blue hat, the answer is Yes.

Sample Input 2

4
BRBR

Sample Output 2

No

There are two people wearing a red hat, and two people wearing a blue hat.

Since there are as many people wearing a red hat as people wearing a blue hat, the answer is No.

Solution in Rust (1.15.1) (judge verdict: Accepted)

macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
    ($($r:tt)*) => {
        let s = {
            use std::io::Read;
            let mut s = String::new();
            std::io::stdin().read_to_string(&mut s).unwrap();
            s
        };
        let mut iter = s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
}

macro_rules! input_inner {
    ($iter:expr) => {};
    ($iter:expr, ) => {};
    ($iter:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($iter, $t);
        input_inner!{$iter $($r)*}
    };
}

macro_rules! read_value {
    ($iter:expr, ( $($t:tt),* )) => {
        ( $(read_value!($iter, $t)),* )
    };

    ($iter:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($iter, $t)).collect::<Vec<_>>()
    };

    ($iter:expr, chars) => {
        read_value!($iter, String).chars().collect::<Vec<char>>()
    };

    ($iter:expr, usize1) => {
        read_value!($iter, usize) - 1
    };

    ($iter:expr, $t:ty) => {
        $iter.next().unwrap().parse::<$t>().expect("Parse error")
    };
}

fn main() {
    input! {
        n: usize,
        s: chars
    }
    let mut countr = 0;
    let mut countb = 0;
    for c in s {
        if c == 'R' {
            countr += 1
        } else if c == 'B' {
            countb += 1;
        }
    }
    if countr > countb {
        println!("Yes")
    } else {
        println!("No")
    }
}

// fn main() {
//     input! {
//         n: usize,
//         k: usize,
//     }
//     println!("{}", k * (k - 1).pow(n as u32 - 1))
// }

// fn main() {
//     input! {
//         h: usize,
//         w: usize,
//         s: [chars; h]
//     }
//     let xy = [
//         // [-1i32, 1i32],
//         [0i32, 1i32],
//         // [1i32, 1i32],
//         [-1i32, 0i32],
//         [1i32, 0i32],
//         // [-1i32, -1i32],
//         [0i32, -1i32],
//         // [1i32, -1i32],
//     ];
//     let mut s = s;
//     for y in 0..h {
//         for x in 0..w {
//             if s[y][x] == '.' {
//                 continue;
//             }
//             let mut b = false;
//             for i in 0..4 {
//                 let xx = x as i32 + xy[i][0] as i32;
//                 let yy = y as i32 + xy[i][1] as i32;
//                 if xx < 0 || w as i32 <= xx {
//                     continue;
//                 }
//                 if yy < 0 || h as i32 <= yy {
//                     continue;
//                 }
//                 if s[yy as usize][xx as usize] == '#' {
//                     b = true;
//                 }
//             }
//             if !b {
//                 println!("No");
//                 return;
//             }
//         }
//     }
//     println!("Yes")
// }