from heapq import heappop, heappush

n = int(input())
s = list(map(int, list(input())))
t = list(map(int, list(input())))
q = int(input())


s_bigger = []

s_bigger_del = []
t_bigger = []
t_bigger_del = []


for i in range(n):
    if s[i] > t[i]:
        heappush(s_bigger, i * 10 + s[i])
    elif s[i] < t[i]:
        heappush(t_bigger, i * 10 + t[i])

for _ in range(q):
    # delのものを消す
    # while s_bigger_del:
    #     if s_bigger[0] == s_bigger_del[0]:
    #         heappop(s_bigger)
    #         heappop(s_bigger_del)
    #     else:
    #         break
    # while t_bigger_del:
    #     if t_bigger[0] == t_bigger_del[0]:
    #         heappop(t_bigger)
    #         heappop(t_bigger_del)
    #     else:
    #         break
    c, x, y = input().split()
    x = int(x)
    y = int(y)
    if c == "S":
        if s[x - 1] > t[x - 1]:
            heappush(s_bigger_del, (x - 1) * 10 + s[x - 1])
        elif s[x - 1] < t[x - 1]:
            heappush(t_bigger_del, (x - 1) * 10 + t[x - 1])
        s[x - 1] = y
        if s[x - 1] > t[x - 1]:
            heappush(s_bigger, (x - 1) * 10 + s[x - 1])
        elif t[x - 1] > s[x - 1]:
            heappush(t_bigger, (x - 1) * 10 + t[x - 1])
    else:
        if s[x - 1] > t[x - 1]:
            heappush(s_bigger_del, (x - 1) * 10 + s[x - 1])
        elif s[x - 1] < t[x - 1]:
            heappush(t_bigger_del, (x - 1) * 10 + t[x - 1])
        t[x - 1] = y
        if s[x - 1] > t[x - 1]:
            heappush(s_bigger, (x - 1) * 10 + s[x - 1])
        elif t[x - 1] > s[x - 1]:
            heappush(t_bigger, (x - 1) * 10 + t[x - 1])
    while s_bigger_del:
        if s_bigger[0] == s_bigger_del[0]:
            heappop(s_bigger)
            heappop(s_bigger_del)
        else:
            break
    while t_bigger_del:
        if t_bigger[0] == t_bigger_del[0]:
            heappop(t_bigger)
            heappop(t_bigger_del)
        else:
            break

    if not s_bigger and not t_bigger:
        print("=")
    elif not s_bigger:
        print("<")
    elif not t_bigger:
        print(">")
    else:
        ttt = t_bigger[0] // 10
        sss = s_bigger[0] // 10
        if sss < ttt:
            print(">")
        else:
            print("<")
    # print("s", "".join(map(str, s)))
    # print("t", "".join(map(str, t)))
    # print("s", s_bigger, s_bigger_del)
    # print("t", t_bigger, t_bigger_del)