#!/bin/python3

import sys


n,a,b,q = input().strip().split(' ')
n,a,b,q = [int(n),int(a),int(b),int(q)]
c = list(map(int, input().strip().split(' ')))
for a0 in range(q):
    queryType,first,second = input().strip().split(' ')
    queryType,first,second = [int(queryType),int(first),int(second)]
    # your code goes here
    if queryType == 1:
        c[first] = second
    else:
        root = -b/a
        sum = c[0]
        for i in range(1,len(c)):
            sum+= root**i*c[i]
        sum = round(sum)
        if sum ==0:
            print("Yes")
        else:
            print("No")