N = int(input())
S = int(input())
T = int(input())
Q = int(input())

for _ in range(Q):
    s = input().split()
    c, x, y = s[0], int(s[1]), int(s[2])
    X = 10**(N-x)
    Y = y * X
    if c == 'S':
        X = ((S // X) % 10) * X
        S += -X + Y
    else:
        X = ((T // X) % 10) * X
        T += -X + Y
    print('>' if S > T else ('<' if S < T else '='))