#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define sz(v) (int)v.size()
#define all(v) v.begin(), v.end()
#define filter(v) v.resize(unique(all(v)) - v.begin())
#define dbg(x) "[" #x " = " << (x) << "]"
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
template<typename T> bool maximize(T &a, T b) {
if(a < b) {
a = b;
return true;
}else return false;
}
template<typename T> bool minimize(T &a, T b) {
if(a > b) {
a = b;
return true;
}else return false;
}
template<typename T> T rnd(T a, T b) {
return uniform_int_distribution<T>(a, b)(rng);
}
typedef long long ll;
typedef long double ld;
const int N = 2e5 + 3;
int n, h;
int a[N];
int hlim = 0;
namespace subtask_4 {
bool valid() {
return h == 0;
}
ll pre[N];
ll get(int l, int r) {
return pre[r] - pre[l - 1];
}
ll work(int pos) {
return 1LL * (pos - 1) * a[pos] - get(1, pos - 1) + get(pos + 1, n) - 1LL * (n - pos) * a[pos];
}
void solve() {
sort(a + 1, a + 1 + n);
for(int i = 1; i <= n; i++) {
pre[i] = pre[i - 1] + a[i];
}
ll answer = LLONG_MAX;
minimize(answer, work(n / 2));
minimize(answer, work(n / 2 + 1));
cout << answer << endl;
}
}
namespace subtask_5 {
bool valid() {
return n <= 500 && hlim <= 400;
}
const int S = 400 + (3);
int dp[2][S];
bool past = 0, current = 1;
void solve() {
for(int i = 0; i <= hlim; i++) {
dp[past][i] = abs(a[1] - i);
}
cout << "Current : " << 1 << endl;
for(int j = 0; j <= hlim; j++) {
cout << dbg(j) << " " << dp[past][j] << endl;
}
for(int i = 2; i <= n; i++) {
for(int j = 0; j <= hlim; j++) {
dp[current][j] = INT_MAX;
for(int k = 0; k <= hlim; k++) if(abs(j - k) <= h) {
minimize(dp[current][j], dp[past][k] + abs(j - a[i]));
}
}
swap(past, current);
// cout << "Current : " << i << endl;
// for(int j = 0; j <= hlim; j++) {
// cout << dbg(j) << " " << dp[past][j] << endl;
// }
}
int answer = INT_MAX;
for(int i = 0; i <= hlim; i++)
minimize(answer, dp[past][i]);
cout << answer << endl;
}
}
namespace subtask_7 {
bool valid() {
return n <= 5000 && hlim <= 5000;
}
const int S = 5000 * 3 + (3);
bool past = 0, current = 1;
ll dp[2][S];
void solve() {
deque<int> evoker;
for(int i = 0; i <= hlim; i++) {
dp[past][i] = abs(a[1] - i);
}
for(int i = 2; i <= n; i++) {
for(int j = 0, lst = 0; j <= hlim; j++) {
int l = max(0, j - h), r = min(hlim, j + h);
while(!evoker.empty() && evoker.front() < l) evoker.pop_front();
while(lst <= r) {
while(!evoker.empty() && dp[past][evoker.back()] > dp[past][lst])
evoker.pop_back();
evoker.push_back(lst); lst++;
}
dp[current][j] = abs(a[i] - j) + dp[past][evoker.front()];
}
swap(past, current);
while(!evoker.empty()) evoker.pop_back();
}
ll answer = LLONG_MAX;
for(int i = 0; i <= hlim; i++) {
minimize(answer, dp[past][i]);
}
cout << answer << endl;
}
}
namespace subtask_9 {
bool valid() {
return true;
}
ll min_value = 0, shift = 0;
priority_queue<ll> L;
priority_queue<ll, vector<ll>, greater<ll>> R;
void solve() {
for(int i = 1; i <= n; i++) {
if(i == 1) {
L.push(a[i]);
R.push(a[i]);
}else {
ll left_border = L.top() - shift, right_border = R.top() + shift;
if(a[i] < left_border) {
L.pop();
L.push(a[i] + shift);
L.push(a[i] + shift);
R.push(left_border - shift);
min_value += left_border - a[i];
}
else if(a[i] > right_border) {
R.pop();
R.push(a[i] - shift);
R.push(a[i] - shift);
L.push(right_border + shift);
min_value += a[i] - right_border;
}
else {
L.push(a[i] + shift);
R.push(a[i] - shift);
}
}
shift += h;
}
cout << min_value << endl;
}
}
void process() {
if(subtask_4::valid()) return subtask_4::solve();
if(subtask_5::valid()) return subtask_5::solve();
if(subtask_7::valid()) return subtask_7::solve();
if(subtask_9::valid()) return subtask_9::solve();
}
void input() {
cin >> n >> h;
for(int i = 1; i <= n; i++) {
cin >> a[i];
maximize(hlim, a[i]);
}
}
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
#define task "Deeto"
if(fopen(task".inp", "r")) {
freopen(task".inp", "r", stdin);
freopen(task".out", "w", stdout);
}
int testcase = 1; // cin >> testcase;
for(int i = 1; i <= testcase; i++) {
input();
process();
}
cerr << "Saa, watashtachi no deito hajimemashou" << endl;
cerr << "Atarashii kiseki wo koko kara hajimeru shining place nee mou ichido kimi to..." << endl;
return 0;
}
/*
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*/
