#include <iostream>
#include <vector>
#include <cstdio>
#include <sstream>
#include <map>
#include <string>
#include <algorithm>
#include <queue>
#include <cmath>
#include <functional>
#include <set>
#include <ctime>
#include <random>
#include <chrono>
#include <cassert>
#include <tuple>
#include <utility>
using namespace std;

namespace {
  using Integer = long long; //__int128;
  template<class T, class S> istream& operator >> (istream& is, pair<T,S>& p){return is >> p.first >> p.second;}
  template<class T> istream& operator >> (istream& is, vector<T>& vec){for(T& val: vec) is >> val; return is;}
  template<class T> istream& operator ,  (istream& is, T& val){ return is >> val;}
  template<class T, class S> ostream& operator << (ostream& os, const pair<T,S>& p){return os << p.first << " " << p.second;}
  template<class T> ostream& operator << (ostream& os, const vector<T>& vec){for(size_t i=0; i<vec.size(); i++) os << vec[i] << (i==vec.size()-1?"":" "); return os;}
  template<class T> ostream& operator ,  (ostream& os, const T& val){ return os << " " << val;}

  template<class H> void print(const H& head){ cout << head; }
  template<class H, class ... T> void print(const H& head, const T& ... tail){ cout << head << " "; print(tail...); }
  template<class ... T> void println(const T& ... values){ print(values...); cout << endl; }

  template<class H> void eprint(const H& head){ cerr << head; }
  template<class H, class ... T> void eprint(const H& head, const T& ... tail){ cerr << head << " "; eprint(tail...); }
  template<class ... T> void eprintln(const T& ... values){ eprint(values...); cerr << endl; }

  class range{ Integer start_, end_, step_; public: struct range_iterator{ Integer val, step_; range_iterator(Integer v, Integer step) : val(v), step_(step) {} Integer operator * (){return val;} void operator ++ (){val += step_;} bool operator != (range_iterator& x){return step_ > 0 ? val < x.val : val > x.val;} }; range(Integer len) : start_(0), end_(len), step_(1) {} range(Integer start, Integer end) : start_(start), end_(end), step_(1) {} range(Integer start, Integer end, Integer step) : start_(start), end_(end), step_(step) {} range_iterator begin(){ return range_iterator(start_, step_); } range_iterator   end(){ return range_iterator(  end_, step_); } };

  inline string operator "" _s (const char* str, size_t size){ return move(string(str)); }
  constexpr Integer my_pow(Integer x, Integer k, Integer z=1){return k==0 ? z : k==1 ? z*x : (k&1) ? my_pow(x*x,k>>1,z*x) : my_pow(x*x,k>>1,z);}
  constexpr Integer my_pow_mod(Integer x, Integer k, Integer M, Integer z=1){return k==0 ? z%M : k==1 ? z*x%M : (k&1) ? my_pow_mod(x*x%M,k>>1,M,z*x%M) : my_pow_mod(x*x%M,k>>1,M,z);}
  constexpr unsigned long long operator "" _ten (unsigned long long value){ return my_pow(10,value); }

  inline int k_bit(Integer x, int k){return (x>>k)&1;} //0-indexed

  mt19937 mt(chrono::duration_cast<chrono::nanoseconds>(chrono::steady_clock::now().time_since_epoch()).count());

  template<class T> string join(const vector<T>& v, const string& sep){ stringstream ss; for(size_t i=0; i<v.size(); i++){ if(i>0) ss << sep; ss << v[i]; } return ss.str(); }

  inline string operator * (string s, int k){ string ret; while(k){ if(k&1) ret += s; s += s; k >>= 1; } return ret; }
}
constexpr long long mod = 9_ten + 7;

class TrivialBitVector{
 public:
  vector<int> v;
  vector<int> rank_;
  vector<int> select_0;
  vector<int> select_1;

  TrivialBitVector(vector<int>& v_) : v(v_){
    rank_.resize(v.size()+1, 0);
    for(int i=1; i<=v.size(); i++){
      rank_[i] = rank_[i-1] + v[i-1];
    }

    for(int i=0; i<v.size(); i++){
      (v[i] ? select_1 : select_0).push_back( i );
    }
  }

  int at(int pos){
    assert(0 <= pos && pos < v.size());
    return v[pos];
  }

  //count of q in [0, ub)
  int rank(int q, int ub){
    assert(ub <= v.size());
    int ret = rank_[ub];
    if(q == 0) ret = ub - ret;
    return ret;
  }

  //the position of the (t+1)-th occurrence of q
  int select(int q, int t){
    auto& s = q ? select_1 : select_0;
    if(t >= s.size()) return -1;
    return s[t];
  }
};

// T = unsigned int / unsigned long long
// B = bitvector container type
template<class T, class B>
class WaveletMatrix{
  vector<B> m;
  vector<int> L_size;
  T lg; //left most bit
  T mx;
  const int len;

 public:
  WaveletMatrix(vector<T>& v) : len(v.size()){
    mx = *max_element(v.begin(), v.end());
    lg = 0;
    while((T(1)<<lg+1) <= mx) lg++;

    m.reserve(lg+1);
    L_size.resize(lg+1);

    deque<int> l,r;

    l.resize(len);
    iota(l.begin(), l.end(), 0);

    for(int k=0; k<=lg; k++){
      deque<int> l_, r_;
      vector<int> bits(len);

      L_size[k] = l.size();

      for(int i=0; i<l.size(); i++){
        bits[i] = (v[ l[i] ] >> (lg-k))&1;
        if( (v[ l[i] ] >> (lg-k))&1 ){
          r_.push_back( l[i] );
        }else{
          l_.push_back( l[i] );
        }
      }

      for(int i=0; i<r.size(); i++){
        bits[l.size() + i] = (v[ r[i] ] >> (lg-k))&1;
        if( (v[ r[i] ] >> (lg-k))&1 ){
          r_.push_back( r[i] );
        }else{
          l_.push_back( r[i] );
        }
      }

      swap(l, l_);
      swap(r, r_);
      m.emplace_back(bits);

      /*
      for(int i=0; i<len; i++){
        cerr << bits[i];
      }cerr << endl;
      */
    }
  }

  int count(T q, int lb, int ub){
    return rank(q, ub, lb, 0);
  }

  int count_less_than(T q, int lb, int ub){
    if(ub<=lb) return 0;
    if(q >= mx) return ub-lb;
    return rank_less_than_(q, lb, ub, 0);
  }

  //return t-th occurence position of q
  //if q is not in the list then return -1
  int select(T q, int t){
    if(q >= (T(1)<<lg+1)) return -1;
    return select(q,t, 0,len, 0);
  }


  //return (t+1)-th biggest {value, pos} in [lb,ub)
  pair<int,int> quantile(int lb, int ub, int t, int k=0){
    if(t >= ub-lb) return {-1,-1};

    int val = 0;
    int pos = lb;

    int r = m[k].rank(1, ub);
    int l = m[k].rank(1, lb);

    if(k==lg){
      if(r-l > t){
        pos = m[k].select(1, r-1 - t);
        return {1, pos};
      }else{
        pos = m[k].select(0, ub-1-t-l );
        return {0, pos};
      }
    }
    if( r-l > t ){
      auto tmp = quantile(L_size[k+1] + l, L_size[k+1] + r, t, k+1);
      val = (T(1)<<(lg-k)) | tmp.first;
      pos = m[k].select(1, tmp.second - L_size[k+1]);
    }else{
      auto tmp = quantile(lb-l, ub-r, t-(r-l), k+1);
      val = tmp.first;
      pos = m[k].select(0, tmp.second);
    }
    return {val, pos};
  }

  int quantile_pos(int lb, int ub, int t, int k=0){
    if(t >= ub-lb) return -1;

    int val = 0;
    int pos = lb;

    int r = m[k].rank(1, ub);
    int l = m[k].rank(1, lb);

    if(k==lg){
      if(r-l > t){
        return m[k].select(1, r-1 - t);
      }else{
        return m[k].select(0, ub-1-t-l );
      }
    }
    if( r-l > t ){
      auto tmp = quantile_pos(L_size[k+1] + l, L_size[k+1] + r, t, k+1);
      pos = m[k].select(1, tmp - L_size[k+1]);
    }else{
      auto tmp = quantile_pos(lb-l, ub-r, t-(r-l), k+1);
      pos = m[k].select(0, tmp);
    }
    return pos;
  }

  int quantile_val(int lb, int ub, int t, int k=0){
    if(t >= ub-lb) return -1;
    int val = 0;

    int r = m[k].rank(1, ub);
    int l = m[k].rank(1, lb);

    if(k==lg){
      if(r-l > t){
        return 1;
      }else{
        return 0;
      }
    }
    if( r-l > t ){
      auto tmp = quantile_val(L_size[k+1] + l, L_size[k+1] + r, t, k+1);
      val = (T(1)<<(lg-k)) | tmp;
    }else{
      auto tmp = quantile_val(lb-l, ub-r, t-(r-l), k+1);
      val = tmp;
    }
    return val;
  }

 private:

  //return count of the occurence of q in [0, ub)
  int rank(T q, int ub, int lb=0, int k=0){
    if(q > mx) return 0;
    //ub = min(len, ub);
    int bit = (q>>lg-k) & 1;
    int r = m[k].rank(bit, ub);
    int l = m[k].rank(bit, lb);
    if(k==lg) return r - l;
    if(bit == 0){
      return rank(q, r, l, k+1);
    }else{
      return rank(q, L_size[k+1] + r, L_size[k+1] + l, k+1);
    }
  }

  int rank_less_than_(T q, int lb, int ub, int k=0){
    if(q >= mx) return ub-lb;
    int res = 0;
    int bit = (q>>lg-k) & 1;
    int r = m[k].rank(bit, ub);
    int l = m[k].rank(bit, lb);
    if(bit == 1){
      res += ub-lb - (r-l);
    }
    if(k==lg) return res + r - l;
    if(bit == 0){
      return res + rank_less_than_(q, l, r, k+1);
    }else{
      return res + rank_less_than_(q, L_size[k+1] + l, L_size[k+1] + r, k+1);
    }
  }

  int select(T q, int t, int lb, int ub, int k){
    int bit = (q>>lg-k) & 1;

    int r = m[k].rank(bit, ub);
    int l = m[k].rank(bit, lb);

    if(k==lg){
      return (r-l > t) ? m[k].select(bit, l+t) : -1;
    }else{
      if(bit == 0){
        t = select(q, t, l,r, k+1);
      }else{
        t = select(q, t, L_size[k+1] + l, L_size[k+1] + r, k+1) - L_size[k+1];
      }
      if(t <= -1) return -1;
      
      return m[k].select(bit, t);
    }
  }

};



int main(){
  int n,d,k;
  cin >> n,d,k;

  vector<int> x(n);
  for(int i=0; i<n; i++){
    scanf("%d", &x[i]);
    // x[i] = 1000000 - x[i];
  }

  x.resize(n+n+10, -114514893);

  // WaveletMatrix<int, TrivialBitVector> w(x);

  long long ans = -114514893;
  int ii,jj;
  // for(int i=0; i<n; i++){
  //   int j = w.quantile_pos(i, i+d+1, d);
  //   int vv = -x[j] + x[i];
  //   if(ans < vv){
  //     ii = i;
  //     jj = j;
  //     ans = vv;
  //   }
  // }

  deque<int> dq;
  for(int i=0; i<d; i++){
    while( dq.size() && x[dq.back()] < x[i]){
      dq.pop_back();
    }
    dq.push_back( i );
  }
  for(int i=0; i<n; i++){
    while(dq.size() && dq.front() < i){
      dq.pop_front();
    }
    while( dq.size() && x[dq.back()] < x[i+d]){
      dq.pop_back();
    }
    dq.push_back( i+d );

    int val = x[dq.front()] - x[i];
    if(ans < val){
      ans = val;
      ii = i;
      jj = dq.front();
    }
  }

  println(ans * k);
  if(ans != 0) println(ii,jj);
  return 0;
}