#include<bits/stdc++.h>
using namespace std;
#define mod 1000000007
#define LL long long

LL n,q;
double a,b;
LL ara[100005];
int main() {
    cin >> n >> a >> b >> q;
    for(int i=0; i<n; i++) cin>>ara[i];

    for(int i=0; i<q; i++) {
        int x,l,r;;
        cin >> x>>l>>r;
        if(x==1) {


            ara[l] = r;
        } else {
            vector <double> mv;
            for(int i = r; i>=l; i--) mv.push_back(ara[i]);

            for(int i = 0 ; i<mv.size()-1; i++) {
                double temp1 = mv[i];
                double temp2 = a;
                double C = temp1/temp2;
                double X = b*C;
                mv[i+1]-=X;
            }
            if(mv[mv.size()-1]==0)cout << "Yes\n";
            else cout << "No\n";
        }
    }

}