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]
        S[x-1] = y
    else:
        df = T[x-1]-y
        T[x-1] = y
    if df:
        D[x-1] += df
        if status == 'e':
            checked = x-1
            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')