#include <bits/stdc++.h>
using namespace std;

#define _p(...) (void)printf(__VA_ARGS__)
#define forr(x,arr) for(auto&& x:arr)
#define _overload3(_1,_2,_3,name,...) name
#define _rep2(i,n) _rep3(i,0,n)
#define _rep3(i,a,b) for(int i=int(a);i<int(b);++i)
#define rep(...) _overload3(__VA_ARGS__,_rep3,_rep2,)(__VA_ARGS__)
#define _rrep2(i,n) _rrep3(i,0,n)
#define _rrep3(i,a,b) for(int i=int(b)-1;i>=int(a);i--)
#define rrep(...) _overload3(__VA_ARGS__,_rrep3,_rrep2,)(__VA_ARGS__)
#define all(x) (x).begin(), (x).end()
#define bit(n) (1LL<<(n))
#define sz(x) ((int)(x).size())
#define fst first
#define snd second
using ll=long long;
using pii=pair<int,int>;using pll=pair<ll,ll>;using pil=pair<int,ll>;using pli=pair<ll,int>;
using vs=vector<string>;using vvs=vector<vs>;using vvvs=vector<vvs>;
using vb=vector<bool>;using vvb=vector<vb>;using vvvb=vector<vvb>;
using vi=vector<int>;using vvi=vector<vi>;using vvvi=vector<vvi>;
using vl=vector<ll>;using vvl=vector<vl>;using vvvl=vector<vvl>;
using vd=vector<double>;using vvd=vector<vd>;using vvvd=vector<vvd>;
using vpii=vector<pii>;using vvpii=vector<vpii>;using vvvpii=vector<vvpii>;
template<class T,class U>istream&operator>>(istream&is,pair<T,U>&P){is>>P.fst;is>>P.snd;return is;}
template<class T>T read(){T t;cin>>t;return t;}
template<class T,class U>ostream&operator<<(ostream&o,const pair<T,U>&p){return o<<'('<<p.fst<<", "<<p.snd<<')';}
template<class T>ostream&operator<<(ostream&o,const vector<T>&t){o<<"{";rep(i,sz(t))o<<t[i]<<",";o<<"}"<<endl;return o;}
#ifdef LOCAL
vs s_p_l_i_t(const string&s,char c){vs v;stringstream ss(s);string x;while(getline(ss,x,c))v.emplace_back(x);return move(v);}
void e_r_r(vs::iterator it){cerr<<endl;}
template<class T,class... Args>void e_r_r(vs::iterator it,T a,Args... args){cerr<<it->substr((*it)[0]==' ',it->length())<<" = "<<a<<", ";e_r_r(++it,args...);}
#define out(args...){vs a_r_g_s=s_p_l_i_t(#args,',');e_r_r(a_r_g_s.begin(),args);}
#else
#define out(args...)
#endif

template<class T> vector<T> slideMinimum(const vector<T> &a, int k) {
  int n = a.size();
  deque<T> deq;
  vector<T> ret;
  for (int i = 0; i < n; i++) {
    while (!deq.empty() && a[deq.back()] <= a[i]) deq.pop_back();
    deq.push_back(i);
    if (i - k + 1 >= 0) {
      ret.push_back(deq.front());
      if (deq.front() == i - k + 1) deq.pop_front();
    }
  }
  return ret;
}

template<class T> bool amax(T &a, const T &b) { if (a < b) { a = b; return 1; } return 0; }

void Main() {
  int n = read<int>();
  int d = read<int>();
  ll k = read<int>();
  vector<int> A(n);
  rep(i, n) A[i] = read<int>();
  rep(i, d) A.emplace_back(A.back());

  vi sm = slideMinimum(A, d+1);

  int ansi = -1;
  int ans = 0;
  rep(i, n) {
    int a = A[i];
    int ma = A[sm[i]];
    if (ma <= a) continue;
    if (amax(ans, ma - a)) {
      ansi = i;
    }
  }

  cout << ans * k << endl;
  if (ans == 0) {
    return;
  }

  rep(i, ansi, n) {
    if (A[i] - A[ansi] == ans) {
      cout << ansi << ' ' << i << endl;
      return;
    }
  }
  assert(false);
}
int main() { cin.tie(nullptr); ios::sync_with_stdio(false); Main(); return 0; }