#include <bits/stdc++.h>
using namespace std;
#define FOR(i,a,b) for (int i = (a); i <= (b); i++)
#define FORD(i,a,b) for (int i = (a); i >= (b); i--)
#define REP(i,a) FOR(i,0,(int)(a)-1)
#define reset(a,b) memset(a,b,sizeof(a))
#define BUG(x) cout << #x << " = " << x << endl
#define PR(x,a,b) {cout << #x << " = "; FOR (_,a,b) cout << x[_] << ' '; cout << endl;}
#define CON(x) {cout << #x << " = "; for(auto i:x) cout << i << ' '; cout << endl;}
#define mod 1000000007
#define pi acos(-1)
#define eps 0.00000001
#define pb push_back
#define sqr(x) (x) * (x)
#define _1 first
#define _2 second

long long n, a, b, q, t, l, r, lis[100005], bit[500005], deg[100005];

long long expo(long long x, long long y) {
  long long res = 1;
  FORD (i, 30, 0) {
    res *= res;
    res %= mod;
    if ((1 << i) & y) {
      res *= x;
      res %= mod;
    }
  }
  return res;
}

long long read(long long x) {
  long long res = 0;
  while (x > 0) {
    res += bit[x];
    x -= x & (-x);
  }
  return res % mod;
}

void write(long long x, long long val) {
  while (x < 300000) {
    bit[x] += val;
    bit[x] %= mod;
    x += x & (-x);
  }
}

int main() {
  ios::sync_with_stdio(false);
  cin >> n >> a >> b >> q;
  if (b == 0) {
    FOR (i, 1, n) cin >> lis[i];
    while (q--) {
      cin >> t >> l >> r;
      if (t == 1) {
        lis[l + 1] = r;
      } else {
        if (lis[1]) cout << "NO" << endl;
        else cout << "YES" << endl;
      }
    }
    return 0;
  }
  b *= -expo(a, mod - 2);
  long long cur = 1;
  FOR (i, 0, n) {
    deg[i] = cur;
    cur = (cur * b) % mod;
  }
  FOR (i, 1, n) {
    cin >> lis[i];
    write(i, lis[i] * deg[i]);
  }
  while (q--) {
    // BUG(q);
    cin >> t >> l >> r;
    // cout << t << l << r << endl;
    if (t == 1) {
      l++;
      write(l, deg[l] * (r - lis[l]));
      lis[l] = r;
    } else {
      long long cur = read(r + 1) - read(l);
      if (cur % mod) cout << "NO" << endl;
      else cout << "YES" << endl;
    }
  }
}