#include <bits/stdc++.h>
#ifdef dbg
#define D(...) fprintf(stderr, __VA_ARGS__)
#define DD(...) D(#__VA_ARGS__ " = "), debug_helper::debug(__VA_ARGS__), D("\n")
#include "C:\Users\wsyear\Desktop\OI\templates\debug.hpp"
#else
#define D(...) ((void)0)
#define DD(...) ((void)0)
#endif
#define rep(i, j, k) for (int i = (j); i <= (k); ++i)
#define per(i, j, k) for (int i = (j); i >= (k); --i)
#define SZ(v) int((v).size())
#define ALL(v) (v).begin(),(v).end()
#define fi first
#define se second
using ll = long long;
using pii = std::pair<int, int>;
using pll = std::pair<ll, ll>;

using namespace std;

template <int P>
class mod_int {
  using Z = mod_int;

private:
  static int mo(int x) { return x < 0 ? x + P : x; }

public:
  int x;
  int val() const { return x; }
  mod_int() : x(0) {}
  template <class T>
  mod_int(const T &x_) : x(x_ >= 0 && x_ < P ? static_cast<int>(x_) : mo(static_cast<int>(x_ % P))) {}
  bool operator==(const Z &rhs) const { return x == rhs.x; }
  bool operator!=(const Z &rhs) const { return x != rhs.x; }
  Z operator-() const { return Z(x ? P - x : 0); }
  Z pow(long long k) const {
    Z res = 1, t = *this;
    while (k) {
      if (k & 1) res *= t;
      if (k >>= 1) t *= t;
    }
    return res;
  }
  Z &operator++() {
    x < P - 1 ? ++x : x = 0;
    return *this;
  }
  Z &operator--() {
    x ? --x : x = P - 1;
    return *this;
  }
  Z operator++(int) {
    Z ret = x;
    x < P - 1 ? ++x : x = 0;
    return ret;
  }
  Z operator--(int) {
    Z ret = x;
    x ? --x : x = P - 1;
    return ret;
  }
  Z inv() const { return pow(P - 2); }
  Z &operator+=(const Z &rhs) {
    (x += rhs.x) >= P && (x -= P);
    return *this;
  }
  Z &operator-=(const Z &rhs) {
    (x -= rhs.x) < 0 && (x += P);
    return *this;
  }
  Z &operator*=(const Z &rhs) {
    x = 1ULL * x * rhs.x % P;
    return *this;
  }
  Z &operator/=(const Z &rhs) { return *this *= rhs.inv(); }
#define setO(T, o)                                 \
  friend T operator o(const Z &lhs, const Z &rhs) {\
    Z res = lhs;                                   \
    return res o## = rhs;                          \
  }
  setO(Z, +) setO(Z, -) setO(Z, *) setO(Z, /)
#undef setO
};
const int P = 998244353;
using Z = mod_int<P>;

const int maxn = 200010;
const int maxm = 6;
mt19937 rnd(random_device{}());

Z C[maxm][maxm];
int n, m, k, w, rt, tot, a[maxn], ls[maxn], rs[maxn];

inline int add(int x, int y) {
  return x + y >= w ? x + y - w : x + y;
}

struct node {
  int sz, szm, val, key, cnt[maxm][maxm];
  Z sum[maxm];
  node() {
    sz = 0;
    memset(cnt, 0, sizeof(cnt));
    rep (i, 0, k) sum[i] = 0;
  }
  node(int x) {
    sz = 1, szm = (w == 1 ? 0 : 1), val = x, key = rnd();
    memset(cnt, 0, sizeof(cnt));
    rep (i, 0, w - 1) {
      int tmp = x;
      rep (j, 1, k) tmp = 1ll * tmp * (i + 1) % w;
      cnt[i][tmp] = 1;
    }
    rep (i, 0, k) sum[i] = x;
  }
  Z calc() {
    Z sum = 0;
    rep (i, 0, w) sum += Z(i) * cnt[0][i];
    return sum;
  }
  friend node operator+(node x, node y) {
    node res = node();
    res.szm = add(x.szm, y.szm), res.sz = x.sz + y.sz;
    rep (i, 0, w - 1) {
      rep (j, 0, w - 1) res.cnt[i][j] += x.cnt[i][j];
      rep (j, 0, w - 1) res.cnt[i][j] += y.cnt[add(i, x.szm)][j];
    }
    rep (i, 0, k) res.sum[i] = x.sum[i];
    rep (i, 0, k) {
      Z prod = 1;
      per (j, i, 0) res.sum[i] += y.sum[j] * C[i][j] * prod, prod *= x.sz;
    }
    return res;
  }
  friend bool operator<(node x, node y) {
    return x.val < y.val;
  }
} t[maxn], val[maxn];

int nnd(int x) {
  t[++tot] = node(x), val[tot] = t[tot];
  return tot;
}

void pushup(int x) {
  t[x] = val[x];
  if (ls[x]) t[x] = t[ls[x]] + t[x];
  if (rs[x]) t[x] = t[x] + t[rs[x]];
}

void split(int x, int v, int &p, int &q) {
  if (!x) return p = q = 0, void();
  if (val[x].val <= v) p = x, split(rs[x], v, rs[p], q);
  else q = x, split(ls[x], v, p, ls[q]);
  pushup(x);
}

int merge(int p, int q) {
  if (!p || !q) return p ^ q;
  if (val[p].key < val[q].key) {
    rs[p] = merge(rs[p], q);
    return pushup(p), p;
  } else {
    ls[q] = merge(p, ls[q]);
    return pushup(q), q;
  }
}

void ins(int x) {
  int p, q;
  split(rt, x, p, q);
  int w = nnd(x);
  rt = merge(merge(p, w), q);
}

void del(int x) {
  int p, w, q;
  split(rt, x - 1, p, q), split(q, x, w, q);
  w = merge(ls[w], rs[w]);
  rt = merge(merge(p, w), q);
}

int main() {
  C[0][0] = 1;
  rep (i, 1, 5) {
    C[i][0] = 1;
    rep (j, 1, i) C[i][j] = C[i - 1][j] + C[i - 1][j - 1];
  }
  cin.tie(nullptr) -> ios::sync_with_stdio(false);
  cin >> n >> k >> w;
  rep (i, 1, n) cin >> a[i], ins(a[i]);
  cin >> m;
  while (m--) {
    int x, v;
    cin >> x >> v, del(a[x]), ins(a[x] = v);
    cout << ((t[rt].sum[k] - t[rt].calc()) / w).val() << '\n';
  }
}