N = int(input())
S = list(input())
T = list(input())
Q = int(input())
for i in range(Q):
    c,x,y=input().split()
    if c=='T':
        T[int(x)-1]=y
    else:
        S[int(x)-1]=y
    t = int(''.join(map(str, T))) 
    s = int(''.join(map(str, S)))
    if t==s:
        print('=')
    elif s>t:
        print('>')
    else:
        print('<')