# 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には巨大すぎるか

N = int(input())
S = input()
T = input()

#print(S, T)

# eval('015')はできないみたいよ

Q = int(input())
for i in range(Q):
    query = list(map(str, input().split()))
    if query[0] == 'S':
        d = int(query[1])-1
        S = S[:d]+query[2]+S[d+1:]
    elif query[0] == 'T':
        d = int(query[1])-1
        T = T[:d]+query[2]+T[d+1:]
    evalS = eval(S.lstrip('0'))
    evalT = eval(T.lstrip('0'))
    if evalS > evalT:
        print('>')
    elif evalS < evalT:
        print('<')
    elif evalS == evalT:
        print('=')
    #print('S', evalS, 'T', evalT)