class FenwickTree():
    def __init__(self, n):
        self.n = n
        self.data = [0] * n

    def build(self, arr):
        #assert len(arr) <= n
        for i, a in enumerate(arr):
            self.data[i] = a
        for i in range(1, self.n + 1):
            if i + (i & -i) <= self.n:
                self.data[i + (i & -i) - 1] += self.data[i - 1]

    def add(self, p, x):
        #assert 0 <= p < self.n
        p += 1
        while p <= self.n:
            self.data[p - 1] += x
            p += p & -p

    def sum(self, r):
        #assert 0 <= r <= self.n
        s = 0
        while r:
            s += self.data[r - 1]
            r -= r & -r
        return s

    def get(self, p):
        return self.range_sum(p, p + 1)

    def range_sum(self, l, r):
        #assert 0 <= l <= r <= self.n
        return self.sum(r) - self.sum(l)

    #not verified
    def bisect_left(self, x):
        if x <= 0: return 0
        res = 0
        k = 1 << self.n.bit_length()
        while k:
            if res + k <= self.n and self.data[res + k - 1] < x:
                x -= self.data[res + k - 1]
                res += k
            k >>= 1
        return res + 1

class OrderedSet(): #0以上n未満の整数の集合を管理する（重複なし）
    def __init__(self, n):
        self.n = n
        self.bit = FenwickTree(n)

    def build(self, arr):
        self.bit.build(arr)

    def is_exist(self, k):
        return self.bit.get(k)

    def size(self):
        return self.bit.sum(self.n)

    def insert(self, k):
        if self.is_exist(k): return 0
        self.bit.add(k, 1)
        return 1

    def delete(self, k):
        if not self.is_exist(k): return 0
        self.bit.add(k, -1)
        return 1

    def get(self, i):
        sz = self.size()
        if sz <= i or i + sz < 0: return -1
        if i < 0: return self.get(sz + i)
        ret = self.bit.bisect_left(i + 1) - 1
        return ret

    def max(self):
        return self.get(-1)

    def min(self):
        return self.get(0)

    def index(self, k):
        if not self.is_exist(k): return -1
        ret = self.bit.sum(k)
        return ret

    def predecessor(self, k):
        ret = self.bit.bisect_left(self.bit.sum(k + 1)) - 1
        return ret

    def successor(self, k):
        ret = self.bit.bisect_left(self.bit.sum(k) + 1) - 1
        return ret if ret != self.n else -1

import sys
input = sys.stdin.readline

N = int(input())

S = list(input())
T = list(input())

P = OrderedSet(N + 1)
P.insert(N)

for i in range(N):
    if S[i] != T[i]:
        P.insert(i)

Q = int(input())

for _ in range(Q):
    c, x, y = input().split()
    x = int(x) - 1
    if c == 'S':
        if S[x] == T[x]:
            if T[x] != y:
                P.delete(x)
        else:
            if T[x] == y:
                P.insert(x)
        S[x] = y
    else:
        if S[x] == T[x]:
            if S[x] == y:
                P.delete(x)
        else:
            if S[x] == y:
                P.insert(x)
        T[x] = y
    v = P.min()
    if v == N:
        print('=')
    else:
        if S[v] > T[v]:
            print('>')
        else:
            print('<')