import sys
import io, os
input = sys.stdin.readline
#input = io.BytesIO(os.read(0,os.fstat(0).st_size)).readline

n = int(input())
s = int(input())
t = int(input())

S = list(str(s))
T = list(str(t))
S = [int(c) for c in S]
T = [int(c) for c in T]
S = [0]*(n-len(S))+S
T = [0]*(n-len(T))+T
for i in range(n):
    if S[i] != T[i]:
        p = i
        break
else:
    p = n
#print(S)
#print(T)

#N = 2*10**5+50
#table = [0]*(N+1)
#table[0] = 1
#for i in range(1, N+1):
    #table[i] = table[i-1]*10

q = int(input())
for i in range(q):
    c, x, y = map(str, input().rstrip().split())
    #print(c, x, y)
    x, y = int(x), int(y)
    x -= 1
    if c == 'S':
        S[x] = y
    else:
        T[x] = y
    if x < p:
        p = x
        if S[x] > T[x]:
            print('>')
        elif S[x] == T[x]:
            print('=')
        else:
            print('<')
    else:
        if S[p] == T[p]:
            for j in range(p, n):
                if S[j] != T[j]:
                    p = j
                    break
            else:
                p = n
        if p != n:
            if S[p] > T[p]:
                print('>')
            else:
                print('<')
        else:
            print('=')
    #print(p)
    #print(S)
    #print(T)