# def main():にしよう
# まずNはintで受けるのか、文字列で受けるのか
# 長さ10**5はintには巨大すぎる
# 数字が大きすぎるか
# どの桁まで同じかを管理するのでどうだろう

def check(LIST1, LIST2, start, N):
    idx = start-1
    for i in range(start, N):
        if LIST1[i] == LIST2[i]:
            idx = i
        elif LIST1[i] > LIST2[i]:
            return idx, '>'
        elif LIST1[i] < LIST2[i]:
            return idx, '<'
    return N-1, '='

def main():
    N = int(input())
    S = input()
    T = input()
    S_list = list(map(int, S))
    T_list = list(map(int, T))
    same, ans = check(S_list, T_list, 0, N)
    Q = int(input())
    for i in range(Q):
        query = list(map(str, input().split()))
        d = int(query[1])-1
        new = int(query[2])
        if d <= same+1:
            if query[0] == 'S':
                S_list[d] = new
            elif query[0] == 'T':
                T_list[d] = new
            same, ans = check(S_list, T_list, d, N)
            print(ans)
        elif d > same+1:
            if query[0] == 'S':
                S_list[d] = new
            elif query[0] == 'T':
                T_list[d] = new
            print(ans)

main()