# 1439 : Let's Compare!!!!

import numpy as np
from sys import stdin

colNum=int(stdin.readline())
intST=[0]*2
S=0
T=1
intST[S]=int(stdin.readline().rstrip())
intST[T]=int(stdin.readline().rstrip())
Q=int(stdin.readline())

for i in range(Q):
    c,x,y=stdin.readline().split()
    x=int(x)-1
    y=int(y)
    if c=='S':
        tgt=S
    else:
        tgt=T
    nThCol=np.floor(intST[tgt]/10**(colNum-(x+1))%10)
    intST[tgt]+=(y-nThCol)*10**(colNum-(x+1))
    if intST[S]>intST[T]:
        print('>')
    elif intST[S]<intST[T]:
        print('<')
    else:
        print('=')