import sys
input = lambda: sys.stdin.readline().rstrip()
n = int(input())
S = list(map(int, input()))
T = list(map(int, input()))

D = [S[i]-T[i] for i in range(n)]

status = 'e'
checked = 0
for d in D:
    if d > 0:
        status = 's'
        break
    elif d < 0:
        status = 't'
        break
    else:
        checked += 1
q = int(input())
Ans = [None]*q       
for j in range(q):
    c, x, y = input().split()
    x, y = int(x), int(y)
    if c == 'S':
        df = y-S[x-1]
        if df:
            D[x-1] += df
            S[x-1] = y
            if status == 'e':
                checked = x
                if df > 0:
                    status = 's'
                else:
                    status = 't'
            elif status == 's':
                if checked >= x-1:
                    checked = x-1
                    for i in range(x-1, n):
                        d = D[i]
                        if d > 0:
                            break
                        elif d < 0:
                            status = 't'
                            break
                        else:
                            checked += 1
                    if checked == n:
                        status = 'e'
            else:
                if checked >= x-1:
                    checked = x-1
                    for i in range(x-1, n):
                        d = D[i]
                        if d > 0:
                            status = 's'
                            break
                        elif d < 0:
                            break
                        else:
                            checked += 1
                    if checked == n:
                        status = 'e'
    else:
        df = T[x-1]-y
        if df:
            D[x-1] += df
            T[x-1] = y
            if status == 'e':
                checked = x
                if df > 0:
                    status = 's'
                else:
                    status = 't'
            elif status == 's':
                if checked >= x-1:
                    checked = x-1
                    for i in range(x-1, n):
                        d = D[i]
                        if d > 0:
                            break
                        elif d < 0:
                            status = 't'
                            break
                        else:
                            checked += 1
                    if checked == n:
                        status = 'e'
            else:
                if checked >= x-1:
                    checked = x-1
                    for i in range(x-1, n):
                        d = D[i]
                        if d > 0:
                            status = 's'
                            break
                        elif d < 0:
                            break
                        else:
                            checked += 1
                    if checked == n:
                        status = 'e'
    if status == 's':
        Ans[j] = '>'
    elif status == 'e':
        Ans[j] = '='
    else:
        Ans[j] = '<'
print(*Ans, sep = '\n')