import sys
input = lambda: sys.stdin.readline().rstrip()
n = int(input())
s = input()
S = list(map(int, s))
t = input()
T = list(map(int, t))
diff = int(s)-int(t)
q = int(input())
def main():
    Ans = [None]*q
    for i in range(q):
        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:
            Ans[i] = '>'
        elif not diff:
            Ans[i] = '='
        else:
            Ans[i] = '<'
    print(*Ans, sep = '\n')
main()