def judge_which_larger(
        compare: list[str], init_digit: int = 1) -> tuple[str, int]:
    for digit, mark in enumerate(compare[init_digit-1:], init_digit):
        if mark == "=":
            continue
        return mark, digit
    return "=", digit


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("<")

    current_status, diff_digit = judge_which_larger(S_T_compare)
    print(diff_digit)

    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] = "<"

        if diff_digit < digit:
            print(current_status)
        elif diff_digit > digit:
            if S_T_compare[digit-1] == "=":
                print(current_status)
            else:
                print(S_T_compare[digit-1])
                current_status = S_T_compare[digit-1]
                diff_digit = digit
        else:
            current_status, diff_digit = judge_which_larger(
                S_T_compare, diff_digit)
            print(current_status)


if __name__ == "__main__":
    main()