# 文字列で受ける
# 最初の数字か最初の差を記録して、それから数を更新していく

N = int(input())
S = input()
T = input()
S_list = list(map(int, S))
T_list = list(map(int, T))
S_num = eval(S.lstrip('0'))
T_num = eval(T.lstrip('0'))

Q = int(input())
for i in range(Q):
    query = list(map(str, input().split()))
    d = int(query[1])-1
    new = int(query[2])
    if query[0] == 'S':
        S_num += (new - S_list[d])*10**(N-1-d)
        S_list[d] = new
    elif query[0] == 'T':
        T_num += (new - T_list[d])*10**(N-1-d)
        T_list[d] = new
    if S_num > T_num:
        print('>')
    elif S_num < T_num:
        print('<')
    elif S_num == T_num:
        print('=')
    #print('S_num', S_num, 'T_num', T_num)