#!/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)]
    
    if( queryType == 1 ):
        c[first] = second 
        continue
        
    x = float( (-b)  / a   )
    
    res = float(0)
    if( queryType == 2):
        res += float(c[first])
        for i in range(first+1, second+1):
                 res += float( c[i] ) * x 
                 x = x*x
    
    if( res < float( 1 / 1000) ):
        print('Yes')
    else:
        print('No')
    # your code goes here