n = int(input())
S = list(map(int, list(input())))
T = list(map(int, list(input())))
op_idx = n
for i in range(n):
    if S[i] != T[i]:
        op_idx = i
        break

q = int(input())
for _ in range(q):
    c, x, y = input().split()
    x = int(x)
    y = int(y)
    x -= 1
    if c == 'S':
        if S[x] != y:
            S[x] = y
        else:
            if op_idx == n:
                print('=')
            elif S[op_idx] > T[op_idx]:
                print('>')
            elif S[op_idx] < T[op_idx]:
                print('<')
            continue
    elif c == 'T':
        if T[x] != y:
            T[x] = y
        else:
            if op_idx == n:
                print('=')
            elif S[op_idx] > T[op_idx]:
                print('>')
            elif S[op_idx] < T[op_idx]:
                print('<')
            continue
    if x > op_idx:
        if S[op_idx] > T[op_idx]:
            print('>')
        elif S[op_idx] < T[op_idx]:
            print('<')
    elif x < op_idx:
        if S[x] > T[x]:
            print('>')
        elif S[x] < T[x]:
            print('<')
        op_idx = x
    else:
        if S[x] > T[x]:
            print('>')
        elif S[x] < T[x]:
            print('<')
        else:
            op_idx = n
            for i in range(x + 1, n):
                if S[i] > T[i]:
                    print('>')
                    op_idx = i
                    break
                if S[i] < T[i]:
                    print('<')
                    op_idx = i
                    break
            if op_idx == n:
                print('=')