mod = 1000000007
eps = 10**-9


def main():
    import sys
    input = sys.stdin.readline

    class Bit:
        def __init__(self, n):
            self.size = n
            self.tree = [0] * (n + 1)

        def sum(self, i):
            s = 0
            while i > 0:
                s += self.tree[i]
                i -= i & -i
            return s

        def add(self, i, x):
            while i <= self.size:
                self.tree[i] += x
                i += i & -i

        def lower_bound(self, w):
            if w <= 0:
                return 0
            x = 0
            k = 1 << (self.size.bit_length() - 1)
            while k:
                if x + k <= self.size and self.tree[x + k] < w:
                    w -= self.tree[x + k]
                    x += k
                k >>= 1
            return x + 1

    N = int(input())
    S = input().rstrip('\n')
    T = input().rstrip('\n')
    S = [s for s in S]
    T = [t for t in T]
    bit_S = Bit(N)
    bit_T = Bit(N)
    for i in range(N):
        s = int(S[i])
        t = int(T[i])
        if s > t:
            bit_S.add(i+1, 1)
        elif s < t:
            bit_T.add(i+1, 1)
    for _ in range(int(input())):
        c, x, y = input().split()
        x = int(x)
        S_large = 0
        s = int(S[x - 1])
        t = int(T[x - 1])
        if s > t:
            S_large = 1
        elif s < t:
            S_large = -1
        if c == "S":
            S[x-1] = y
        else:
            T[x-1] = y
        s = int(S[x-1])
        t = int(T[x-1])
        if s > t:
            if S_large == 1:
                pass
            elif S_large == 0:
                bit_S.add(x, 1)
            else:
                bit_S.add(x, 1)
                bit_T.add(x, -1)
        elif s < t:
            if S_large == 1:
                bit_T.add(x, 1)
                bit_S.add(x, -1)
            elif S_large == 0:
                bit_T.add(x, 1)
            else:
                pass
        else:
            if S_large == 1:
                bit_S.add(x, -1)
            elif S_large == 0:
                pass
            else:
                bit_T.add(x, -1)
        js = bit_S.lower_bound(1)
        jt = bit_T.lower_bound(1)
        if js < jt:
            print(">")
        elif js > jt:
            print("<")
        else:
            print("=")


if __name__ == '__main__':
    main()