Buggy python submission (verdict: Runtime Error):
s = input()
gx, gy = map(int, input().split())


def dfs(x, y, si, f):
    if len(s) == si:
        if (x, y) == (gx, gy):
            return True
        return False
    ans = False
    if s[si] == 'T':
        return dfs(x, y, si + 1, not f)
    if f:
        for xx, yy in [(x + 1, y), (x - 1, y)]:
            ans = ans or dfs(xx, yy, si + 1, f)
    else:
        for xx, yy in [(x, y + 1), (x, y - 1)]:
            ans = ans or dfs(xx, yy, si + 1, f)
    return ans


def main():
    if dfs(0, 0, 0, True):
        print('Yes')
    else:
        print('No')


main()


Fixed submission:
def main():
    s = input()
    x, y = map(int, input().split())
    sl = s.split('T')
    dx = list(map(len, sl[::2]))
    dy = list(map(len, sl[1::2]))
    nx = dx.pop(0)
    ny = 0
    dx.sort(reverse=True)
    dy.sort(reverse=True)
    for xx in dx:
        if x >= nx:
            nx += xx
        else:
            nx -= xx
    for yy in dy:
        if y >= ny:
            ny += yy
        else:
            ny -= yy
    print('YNeos'[nx != x or ny != y::2])


main()

Buggy python submission (verdict: Runtime Error):
def dfs(x, y, gx, gy, s, f):
    if len(s) == 0:
        if (x, y) == (gx, gy):
            return True
        return False
    ans = False
    if s[0] == 'T':
        if f:
            ans = ans or dfs(x, y, gx, gy, s[1:], not f)
        else:
            ans = ans or dfs(x, y, gx, gy, s[1:], not f)
    else:
        if f:
            for xx, yy in [(x + 1, y), (x - 1, y)]:
                ans = ans or dfs(xx, yy, gx, gy, s[1:], f)
        else:
            for xx, yy in [(x, y + 1), (x, y - 1)]:
                ans = ans or dfs(xx, yy, gx, gy, s[1:], f)
    return ans


def main():
    s = input()
    x, y = map(int, input().split())
    if dfs(0, 0, x, y, s, True):
        print('Yes')
    else:
        print('No')


main()


Fixed submission:
def main():
    s = input()
    x, y = map(int, input().split())
    sl = s.split('T')
    dx = list(map(len, sl[::2]))
    dy = list(map(len, sl[1::2]))
    nx = dx.pop(0)
    ny = 0
    dx.sort(reverse=True)
    dy.sort(reverse=True)
    for xx in dx:
        if x >= nx:
            nx += xx
        else:
            nx -= xx
    for yy in dy:
        if y >= ny:
            ny += yy
        else:
            ny -= yy
    print('YNeos'[nx != x or ny != y::2])


main()

Buggy python submission (verdict: Runtime Error):
def dfs(x, y, gx, gy, s, f):
    if len(s) == 0:
        if (x, y) == (gx, gy):
            return True
        return False
    ans = False
    if s[0] == 'T':
        if f:
            for xx, yy in [(x, y + 1), (x, y - 1)]:
                ans = ans or dfs(xx, yy, gx, gy, s[1:], f)
        else:
            for xx, yy in [(x + 1, y), (x - 1, y)]:
                ans = ans or dfs(xx, yy, gx, gy, s[1:], f)
    else:
        if f:
            for xx, yy in [(x + 1, y), (x - 1, y)]:
                ans = ans or dfs(xx, yy, gx, gy, s[1:], f)
        else:
            for xx, yy in [(x, y + 1), (x, y - 1)]:
                ans = ans or dfs(xx, yy, gx, gy, s[1:], f)
    return ans


def main():
    s = input()
    x, y = map(int, input().split())
    if dfs(0, 0, x, y, s, True):
        print('Yes')
    else:
        print('No')


main()


Fixed submission:
def main():
    s = input()
    x, y = map(int, input().split())
    sl = s.split('T')
    dx = list(map(len, sl[::2]))
    dy = list(map(len, sl[1::2]))
    nx = dx.pop(0)
    ny = 0
    dx.sort(reverse=True)
    dy.sort(reverse=True)
    for xx in dx:
        if x >= nx:
            nx += xx
        else:
            nx -= xx
    for yy in dy:
        if y >= ny:
            ny += yy
        else:
            ny -= yy
    print('YNeos'[nx != x or ny != y::2])


main()