n = int(input())
s = input()
S = list(map(int, str(s)))
t = input()
T = list(map(int, str(t)))
diff = int(s)-int(t)
for _ in range(int(input())):
    c, x, y = input().split()
    x, y = int(x), int(y)
    if c == 'S':
        diff += 10**(n-x)*(y-S[x-1])
        S[x-1] = y
    else:
        diff += 10**(n-x)*(T[x-1]-y)
        T[x-1] = y
    if diff > 0:
        print('>')
    elif not diff:
        print('=')
    else:
        print('<')