Buggy python submission (verdict: Time Limit Exceeded):
H, W, N = map(int, input().split())
sh, sw = map(int, input().split())

S = input()
T = input()

def canTakaWin(toS, isInc, toT, R, c):
    mask = ((1 << (R + 1)) - 1) ^ 1
    now = 1 << c

    for s, t in zip(S, T):
        if now == 0:
            return True
        if s == toS:
            now = (now << 1) if isInc else (now >> 1)
        now &= mask

        direct = 0
        for i, k in enumerate(toT):
            if k == t:
                direct = (-1)**i
        if direct != 0:
            now |= (now << 1) if direct > 0 else (now >> 1)
        now &= mask

    return now == 0

ans = False
ans = ans or canTakaWin('U', False, 'DU', H, sh)
ans = ans or canTakaWin('D', True, 'DU', H, sh)
ans = ans or canTakaWin('L', False, 'RL', W, sw)
ans = ans or canTakaWin('R', True, 'RL', W, sw)

print('NO' if ans else 'YES')


Fixed submission:
H, W, N = map(int, input().split())
sr, sc = map(int, input().split())
S = input()
T = input()

left = 1
right = W
bottom = 1
top = H

if S[-1] == 'L':
    left += 1
elif S[-1] == 'R':
    right -= 1
elif S[-1] == 'U':
    bottom += 1
elif S[-1] == 'D':
    top -= 1

for i in range(N - 1)[:: -1]:
    if T[i] == 'L':
        right = min(W, right + 1)
    elif T[i] == 'R':
        left = max(1, left - 1)
    elif T[i] == 'U':
        top = min(H, top + 1)
    elif T[i] == 'D':
        bottom = max(1, bottom - 1)

    if S[i] == 'L':
        left += 1
    elif S[i] == 'R':
        right -= 1
    elif S[i] == 'U':
        bottom += 1
    elif S[i] == 'D':
        top -= 1

    if left > right or bottom > top:
        print('NO')
        break
else:
    if left <= sc <= right and bottom <= sr <= top:
        print('YES')
    else:
        print('NO')

Buggy python submission (verdict: Time Limit Exceeded):
H, W, N = map(int, input().split())
sh, sw = map(int, input().split())

S = input()
T = input()

def canTakaWin(toS, isInc, toT, R, c):
    mask = ((1 << (R + 1)) - 1) ^ 1
    now = 1 << c

    for s, t in zip(S, T):
        if s == toS:
            now = (now << 1) if isInc else (now >> 1)
        now &= mask

        direct = 0
        for i, k in enumerate(toT):
            if k == t:
                direct = (-1)**i
        if direct != 0:
            now |= (now << 1) if direct > 0 else (now >> 1)
        now &= mask

    return now == 0

ans = False
ans = ans or canTakaWin('U', False, 'DU', H, sh)
ans = ans or canTakaWin('D', True, 'DU', H, sh)
ans = ans or canTakaWin('L', False, 'RL', W, sw)
ans = ans or canTakaWin('R', True, 'RL', W, sw)

print('NO' if ans else 'YES')


Fixed submission:
H, W, N = map(int, input().split())
sr, sc = map(int, input().split())
S = input()
T = input()

left = 1
right = W
bottom = 1
top = H

if S[-1] == 'L':
    left += 1
elif S[-1] == 'R':
    right -= 1
elif S[-1] == 'U':
    bottom += 1
elif S[-1] == 'D':
    top -= 1

for i in range(N - 1)[:: -1]:
    if T[i] == 'L':
        right = min(W, right + 1)
    elif T[i] == 'R':
        left = max(1, left - 1)
    elif T[i] == 'U':
        top = min(H, top + 1)
    elif T[i] == 'D':
        bottom = max(1, bottom - 1)

    if S[i] == 'L':
        left += 1
    elif S[i] == 'R':
        right -= 1
    elif S[i] == 'U':
        bottom += 1
    elif S[i] == 'D':
        top -= 1

    if left > right or bottom > top:
        print('NO')
        break
else:
    if left <= sc <= right and bottom <= sr <= top:
        print('YES')
    else:
        print('NO')

Buggy python submission (verdict: Time Limit Exceeded):
H, W, N = map(int, input().split())
sh, sw = map(int, input().split())

S = input()
T = input()

def canTakaWin(toS, isInc, toT, R, c):
    mask = ((1 << (R + 1)) - 1) ^ 1
    now = 1 << c

    for s, t in zip(S, T):
        if s == toS:
            now = (now << 1) if isInc else (now >> 1)
        now &= mask

        direct = 0
        for i, k in enumerate(toT):
            if k == t:
                direct = (-1)**i
        if direct != 0:
            now |= (now << 1) if direct > 0 else (now >> 1)
        now &= mask

    return now == 0

ans = False
ans = ans or canTakaWin('U', False, 'DU', H, sh)
ans = ans or canTakaWin('D', True, 'DU', H, sh)
ans = ans or canTakaWin('L', False, 'RL', W, sw)
ans = ans or canTakaWin('R', True, 'RL', W, sw)

print('NO' if ans else 'YES')


Fixed submission:
H, W, N = map(int, input().split())
sr, sc = map(int, input().split())
S = input()
T = input()

left = 1
right = W
bottom = 1
top = H

if S[-1] == 'L':
    left += 1
elif S[-1] == 'R':
    right -= 1
elif S[-1] == 'U':
    bottom += 1
elif S[-1] == 'D':
    top -= 1

for i in range(N - 1)[:: -1]:
    if T[i] == 'L':
        right = min(W, right + 1)
    elif T[i] == 'R':
        left = max(1, left - 1)
    elif T[i] == 'U':
        top = min(H, top + 1)
    elif T[i] == 'D':
        bottom = max(1, bottom - 1)

    if S[i] == 'L':
        left += 1
    elif S[i] == 'R':
        right -= 1
    elif S[i] == 'U':
        bottom += 1
    elif S[i] == 'D':
        top -= 1

    if left > right or bottom > top:
        print('NO')
        break
else:
    if left <= sc <= right and bottom <= sr <= top:
        print('YES')
    else:
        print('NO')