#include "towers.h"
#include <bits/stdc++.h>
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2")
//#define int long long
#define pii pair<int,int>
#define vi vector<int>
#define ff first
#define ss second
#define sp << " " <<
#define all(x) x.begin(),x.end()
#define big(x) ((int)(x.size()))
using namespace std;
const int MOD = 1e9+7, LIM = 1e6+1, inf = 2e9;
int sel = 0;
int len;
vi h;
void init(int N, std::vector<int> H) {
len = N;
h = H;
}
int dnq(int L,int R,int D,int ban = inf) {
int mx = -1,pick = -1;
for (int i = L;i<=R;i++) {
if (h[i] > ban) continue;
if (h[i] > mx) {
mx = h[i],pick = i;
}
}
if (pick == -1) return 0;
int sol = dnq(L,pick-1,D,mx-D),sag = dnq(pick+1,R,D,mx-D);
return max({dnq(L,pick-1,D,ban),dnq(pick+1,R,D,ban),max(1,sol+sag)});
}
int max_towers(int L, int R, int D) {
return dnq(L,R,D);
}
