#![allow(unused, non_snake_case, dead_code, non_upper_case_globals)]
use std::cmp::*;
use std::collections::*;
use std::mem::*;

fn main() {
    let (r, w, e) = (std::io::stdin(), std::io::stdout(), std::io::stderr());
    let mut io = IO::new(r.lock(), w.lock(), e.lock());
    let mut s = io.chars();
    s.push('T');
    let n = s.len();
    let base = 8000usize;
    let (x, y) = (
        io.read::<i64>() + base as i64,
        io.read::<i64>() + base as i64,
    );
    let mut arms = Vec::new();
    let mut fcnt = 0;
    let mut tcnt = 0;
    arms.push(0);
    let mut t = Vec::new();
    for &c in s.iter() {
        if c == 'F' {
            fcnt += 1;
        } else {
            // t.push(fcnt);
            // t.push(0);
            // fcnt = 0;
            if fcnt != 0 {
                t.push(fcnt);
            }
            t.push(0);
            fcnt = 0;
        }
    }

    let mut dpx = vec![vec![false; base * 2 + 2 + 100]; base + 100];
    let mut dpy = vec![vec![false; base * 2 + 2 + 100]; base + 100];
    dpx[0][base] = true;
    dpy[0][base] = true;
    let mut flg = false;
    let mut xy = true;
    let mut cntx = 0;
    let mut cnty = 0;
    for (i, &ti) in t.iter().enumerate() {
        if ti == 0 {
            xy = !xy;
        } else if xy {
            cntx += 1;
            for j in 0..base * 2 + 50 {
                if dpx[cntx - 1][j] {
                    if j + ti < base * 2 + 50 {
                        dpx[cntx][j + ti] = true;
                    }
                    if (j >= ti) && flg {
                        dpx[cntx][j - ti] = true;
                    }
                }
            }
        } else {
            cnty += 1;
            for j in 0..base * 2 + 50 {
                if dpy[cnty - 1][j] {
                    if j + ti < base * 2 + 50 {
                        dpy[cnty][j + ti] = true;
                    }
                    if j >= ti {
                        dpy[cnty][j - ti] = true;
                    }
                }
            }
        }
        if !flg {
            flg = true;
        }
    }
    io.writeln(if dpx[cntx][x as usize] && dpy[cnty][y as usize] {
        "Yes"
    } else {
        "No"
    });
}

static MX: usize = 1010101;
static MOD: i64 = 1000000007;
static INF: i64 = std::i64::MAX >> 1;
// IO
use std::io::*;
struct IO<R: Read, W: Write, E: Write> {
    Read: R,
    Write: BufWriter<W>,
    Error: BufWriter<E>,
}
impl<R: Read, W: Write, E: Write> IO<R, W, E> {
    fn new(r: R, w: W, e: E) -> IO<R, W, E> {
        IO {
            Read: r,
            Write: BufWriter::new(w),
            Error: BufWriter::new(e),
        }
    }
    fn read<T>(&mut self) -> T
    where
        T: std::str::FromStr,
    {
        let next: String = self
            .Read
            .by_ref()
            .bytes()
            .map(|c| c.unwrap() as char)
            .skip_while(|c| c.is_whitespace())
            .take_while(|c| !c.is_whitespace())
            .collect();
        next.parse().ok().unwrap()
    }
    fn chars(&mut self) -> Vec<char> {
        self.read::<String>().chars().collect()
    }
    fn chari(&mut self) -> Vec<i64> {
        self.chars()
            .iter()
            .map(|&c| (c as u8 - b'0') as i64)
            .collect::<Vec<i64>>()
    }
    fn readn<T: std::str::FromStr>(&mut self, n: usize) -> Vec<T> {
        (0..n).map(|_| self.read::<T>()).collect::<Vec<_>>()
    }
    fn readmat<T: std::str::FromStr>(&mut self, n: usize, m: usize) -> Vec<Vec<T>> {
        (0..n).map(|_| self.readn(m)).collect()
    }
    fn write<S: ToString>(&mut self, val: S) {
        self.Write.write(val.to_string().as_bytes());
    }
    fn writeln<S: ToString>(&mut self, val: S) {
        self.Write.write(val.to_string().as_bytes());
        self.Write.write(b"\n");
    }
    fn debug<S: std::fmt::Debug>(&mut self, val: S) {
        writeln!(self.Error, "(debug) {:?}", &val);
    }
    fn debug2<S: std::fmt::Debug, T: std::fmt::Debug>(&mut self, val1: S, val2: T) {
        writeln!(self.Error, "(debug2) {:?} -> {:?}", val1, val2);
    }
    fn debug3<S: std::fmt::Debug, T: std::fmt::Debug, U: std::fmt::Debug>(
        &mut self,
        val1: S,
        val2: T,
        val3: U,
    ) {
        writeln!(
            self.Error,
            "(debug3) {:?} -> {:?} -> {:?}",
            val1, val2, val3
        );
    }
}


Measured memory_bytes: 257488