#include<bits/stdc++.h>
namespace {
#pragma GCC diagnostic ignored "-Wunused-function"
#include<atcoder/all>
#pragma GCC diagnostic warning "-Wunused-function"
using namespace std;
using namespace atcoder;
#define rep(i,n) for(int i = 0; i < (int)(n); i++)
#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; i--)
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } else return false; }
template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } else return false; }
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;
using mint = modint998244353;

struct F {
  mint a, b;
};

F op(F f, F g) {
  return {g.a * f.a, g.a * f.b + g.b};
}
F e() { return {1, 0}; }

} int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n, m, q;
  cin >> n >> m >> q;
  VI a(n);
  rep(i, n) cin >> a[i], a[i]--;
  vector<F> init(n);
  rep(i, n) init[i] = {m, a[i]};
  segtree<F, op, e> seg(init);
  rep(_, q) {
    int l, r;
    cin >> l >> r;
    l--;
    cout << (seg.prod(l, r).b + 1).val() << '\n';
  }
}