#!/bin/python

import sys


n,a,b,q = raw_input().strip().split(' ')
n,a,b,q = [int(n),int(a),int(b),int(q)]
c = map(int, raw_input().strip().split(' '))
x=-1*(float(b)/a)
for a0 in xrange(q):
    queryType,first,second = raw_input().strip().split(' ')
    queryType,first,second = [int(queryType),int(first),int(second)]
    if queryType==1:
        c[first] = second
    else:
        sum1 = 0
        val = 1
        for i in range(first,second+1):
        	sum1+= c[i]*val
        	val*=x
        if sum1==0:
        	print "Yes"
        else:
        	print "No"