def judge_which_larger(compare: list[str]) -> str:
    for mark in compare:
        if mark == "=":
            continue
        return mark
    return "="


def main():
    _ = input()
    S = list(map(int, str(input())))
    T = list(map(int, str(input())))
    S_T_compare = []
    for s_num, t_num in zip(S, T):
        if s_num > t_num:
            S_T_compare.append(">")
        elif s_num == t_num:
            S_T_compare.append("=")
        else:
            S_T_compare.append("<")

    for _ in range(int(input())):
        which_num, digit, number = input().split()
        digit = int(digit)
        number = int(number)
        if which_num == "S":
            S[digit-1] = number
        elif which_num == "T":
            T[digit-1] = number
        else:
            raise ValueError

        if S[digit-1] > T[digit-1]:
            S_T_compare[digit-1] = ">"
        elif S[digit-1] == T[digit-1]:
            S_T_compare[digit-1] = "="
        else:
            S_T_compare[digit-1] = "<"

        print(judge_which_larger(S_T_compare))


if __name__ == "__main__":
    main()