# 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

from sys import stdin
readline = stdin.readline

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

def main():
    N = int(readline())
    S_list = list(readline()[:-1]) #最後は改行
    T_list = list(readline()[:-1]) #最後は改行
    same, ans = check(S_list, T_list, 0, N)
    Q = int(readline())
    for i in range(Q):
        query = list(map(str, readline().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)

if __name__ == '__main__':
    main()