use std::cmp;
use std::collections::HashMap;
use std::collections::VecDeque;
use std::io::Read;
use std::usize::MAX;

macro_rules! input {(source = $s:expr, $($r:tt)*) => {let mut iter = $s.split_whitespace();let mut next = || { iter.next().unwrap() };input_inner!{next, $($r)*}};($($r:tt)*) => {let stdin = std::io::stdin();let mut bytes = std::io::Read::bytes(std::io::BufReader::new(stdin.lock()));let mut next = move || -> String{bytes.by_ref().map(|r|r.unwrap() as char).skip_while(|c|c.is_whitespace()).take_while(|c|!c.is_whitespace()).collect()};input_inner!{next, $($r)*}};}
macro_rules! input_inner {($next:expr) => {};($next:expr, ) => {};($next:expr, $var:ident : $t:tt $($r:tt)*) => {let $var = read_value!($next, $t);input_inner!{$next $($r)*}};}
macro_rules! read_value {($next:expr, ( $($t:tt),* )) => {( $(read_value!($next, $t)),* )};($next:expr, [ $t:tt ; $len:expr ]) => {(0..$len).map(|_| read_value!($next, $t)).collect::<Vec<_>>()};($next:expr, chars) => {read_value!($next, String).chars().collect::<Vec<char>>()};($next:expr, usize1) => {read_value!($next, usize) - 1};($next:expr, [ $t:tt ]) => {{let len = read_value!($next, usize);(0..len).map(|_| read_value!($next, $t)).collect::<Vec<_>>()}};($next:expr, $t:ty) => {$next().parse::<$t>().expect("Parse error")};}

fn solve() {
    input! {
        s: chars,
        x: i64,
        y: i64
    }

    let mut f_array: VecDeque<i64> = VecDeque::new();

    let mut count = 0;
    for c in s {
        if c == 'F' {
            count += 1;
        } else {
            f_array.push_back(count);
            count = 0;
        }
    }
    if count != 0 {
        f_array.push_back(count);
    }

    // 最初の移動
    let mut pos: (i64, i64) = (0, 0);
    let first = f_array.pop_front().unwrap();
    pos.0 += first;

    let mut x_array = Vec::new();
    let mut y_array = Vec::new();

    let mut now_x = false;

    for i in &f_array {
        if now_x {
            x_array.push(*i);
            now_x = false;
        } else {
            y_array.push(*i);
            now_x = true;
        }
    }

    let mut x_dp = vec![vec![false; 16000 + 1]; x_array.len() + 1];
    x_dp[0][8000 + pos.0 as usize] = true;

    let mut y_dp = vec![vec![false; 16000 + 1]; y_array.len() + 1];
    y_dp[0][8000] = true;

    for i in 1..x_array.len() + 1 {
        for j in 0..16000 {
            let plus = if j as i64 >= x_array[i - 1] {
                if x_dp[i - 1][(j - x_array[i - 1]) as usize] {
                    true
                } else {
                    false
                }
            } else {
                false
            };

            let minus = if j as i64 + x_array[i - 1] <= 16000 {
                if x_dp[i - 1][(j + x_array[i - 1]) as usize] {
                    true
                } else {
                    false
                }
            } else {
                false
            };

            if plus || minus {
                x_dp[i][j as usize] = true;
            }
        }
    }

    for i in 1..y_array.len() + 1 {
        for j in 0..16000 {
            let plus = if j as i64 >= y_array[i - 1] {
                if y_dp[i - 1][(j - y_array[i - 1]) as usize] {
                    true
                } else {
                    false
                }
            } else {
                false
            };

            let minus = if j as i64 + y_array[i - 1] <= 16000 {
                if y_dp[i - 1][(j + y_array[i - 1]) as usize] {
                    true
                } else {
                    false
                }
            } else {
                false
            };

            if plus || minus {
                y_dp[i][j as usize] = true;
            }
        }
    }

    if x_dp[x_array.len()][(x + 8000) as usize] && y_dp[y_array.len()][(y + 8000) as usize] {
        println!("Yes");
    } else {
        println!("No");
    }
}

fn main() {
    let thd = std::thread::Builder::new().stack_size(104_857_600);
    thd.spawn(|| solve()).unwrap().join().unwrap();

    /*
    // 入力を一括で読み込む場合
    let mut buf = String::new();
    std::io::stdin().read_to_string(&mut buf).unwrap();
    let mut input = buf.split_whitespace();

    // inputに対しnext()で読み込んでいく
    let q: usize = input.next().unwrap().parse().unwrap();
    */
}

const LARGE_PRIME: u64 = 1_000_000_007;

// @〜でsnippet


Measured memory_bytes: 170364