#include <bits/stdc++.h>
#include <atcoder/segtree>
using namespace std;
using namespace atcoder;
using ll = long long;

using T = pair<ll, ll>;
T op(T l, T r) { return max(l, r); }
T e() { return {0, 0}; }

int main() {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);

  ll N, D, K;
  cin >> N >> D >> K;

  vector<pair<ll, ll>> v(N);
  for(ll i = 0; i < N; i++) {
    cin >> v[i].first;
    v[i].second = -i;
  }

  segtree<T, op, e> S(v);
  ll ans = 0, l, r;
  for(ll i = 0; i < N; i++) {
    auto [val, idx] = S.prod(i, min(i + D + 1, N));
    if(val - v[i].first > ans) {
      ans = val - v[i].first;
      tie(l, r) = {i, idx};
    }
  }

  cout << ans * K << "\n";
  if(ans) { cout << l << " " << -r << "\n"; }
}