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 = ['0']*(n-len(S))+S
T = ['0']*(n-len(T))+T
#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 -= int(S[x])*table[n-1-x]
        #s += y*table[n-1-x]
        s -= int(S[x])*pow(10, n-1-x)
        s += y*pow(10, n-1-x)
        S[x] = str(y)
    else:
        #t -= int(T[x])*table[n-1-x]
        #t += y*table[n-1-x]
        t -= int(T[x])*pow(10, n-1-x)
        t += y*pow(10, n-1-x)
        T[x] = str(y)
    #print(s, t)
    if s > t:
        print('>')
    elif s == t:
        print('=')
    else:
        print('<')