n=int(input())
s=input()
sary=list(map(int,list(s)))
s=int(s)
t=input()
tary=list(map(int,list(t)))
t=int(t)
q=int(input())
query=[input() for _ in range(q)]
for tmp in query:
  c,x,y=tmp.split()
  x=int(x)
  y=int(y)
  if c=="S":
    s-=pow(10,n-x)*sary[x-1]
    s+=pow(10,n-x)*y
    sary[x-1]=y
  else:
    t-=pow(10,n-x)*tary[x-1]
    t+=pow(10,n-x)*y
    tary[x-1]=y
  if s>t:
    print(">")
  elif s==t:
    print("=")
  else:
    print("<")