#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;

int main() {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */   
    long long int n,a,b,q,ch,x,y;
    cin>>n>>a>>b>>q;
    float d=-(b/a);
    long long arr[n];
    double po[n],sum=0;
    for(int i=0;i<n;i++)
    {
        cin>>arr[i];
        po[i]=pow(d,i);
    }
    while(q--)
        {
        cin>>ch;
        if(ch==1)
            {
            cin>>x>>y;
            arr[x]=y;
        }
        else
            {
            sum=0;
            cin>>x>>y;
            for(int i=x;i<=y;i++)
                {
                sum=sum+arr[i]*po[i-x];
            }
            if(sum==0)
                cout<<"Yes\n";
            else
                cout<<"No\n";
        }
    }
    return 0;
}