import sys

sys.setrecursionlimit(10**6)
int1 = lambda x: int(x)-1
p2D = lambda x: print(*x, sep="\n")
def II(): return int(sys.stdin.buffer.readline())
def LI(): return list(map(int, sys.stdin.buffer.readline().split()))
def LI1(): return list(map(int1, sys.stdin.buffer.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]
def LLI1(rows_number): return [LI1() for _ in range(rows_number)]
def BI(): return sys.stdin.buffer.readline().rstrip()
def SI(): return sys.stdin.buffer.readline().rstrip().decode()
# dij = [(0, 1), (-1, 0), (0, -1), (1, 0)]
dij = [(0, 1), (-1, 0), (0, -1), (1, 0), (1, 1), (1, -1), (-1, 1), (-1, -1)]
inf = 10**16
# md = 998244353
md = 10**9+7

from heapq import *

n=II()
st=[[c-48 for c in BI()],[c-48 for c in BI()]]
hp=[]
for i,(c0,c1) in enumerate(zip(st[0],st[1])):
    if c0!=c1:heappush(hp,i)

for _ in range(II()):
    i,j,a=SI().split()
    i=0 if i=="S" else 1
    j=int(j)-1
    a=int(a)
    if st[0][j]==st[1][j] and st[1-i][j]!=a:
        heappush(hp,j)
    st[i][j]=a
    while hp and st[0][hp[0]]==st[1][hp[0]]:
        heappop(hp)
    if hp:
        if st[0][hp[0]]<st[1][hp[0]]:print("<")
        else:print(">")
    else:
        print("=")