結果
| 問題 |
No.2627 Unnatural Pitch
|
| コンテスト | |
| ユーザー |
Kude
|
| 提出日時 | 2024-02-10 21:58:00 |
| 言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 156 ms / 4,000 ms |
| コード長 | 5,059 bytes |
| コンパイル時間 | 4,121 ms |
| コンパイル使用メモリ | 299,292 KB |
| 実行使用メモリ | 24,344 KB |
| 最終ジャッジ日時 | 2024-09-28 17:19:20 |
| 合計ジャッジ時間 | 6,027 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 23 |
ソースコード
#include<bits/stdc++.h>
namespace {
#pragma GCC diagnostic ignored "-Wunused-function"
#include<atcoder/all>
#pragma GCC diagnostic warning "-Wunused-function"
using namespace std;
using namespace atcoder;
#define rep(i,n) for(int i = 0; i < (int)(n); i++)
#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; i--)
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } else return false; }
template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } else return false; }
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;
auto floor_div(signed_integral auto x, signed_integral auto y) {
return x / y - ((x ^ y) < 0 && x % y != 0);
}
template <integral T>
T floor_div(T x, unsigned_integral auto y) {
return x >= 0 ? T(x / y) : -T(-x / y + (-x % y != 0));
}
auto ceil_div(signed_integral auto x, signed_integral auto y) {
return x / y + ((x ^ y) >= 0 && x % y != 0);
}
template <integral T>
T ceil_div(T x, unsigned_integral auto y) {
return x >= 0 ? T(x / y + (x % y != 0)) : -T(-x / y);
}
template <class T, class Comp = less<T>>
struct erasable_priority_queue {
priority_queue<T, vector<T>, Comp> q, q_erase;
void push(T x) { q.push(move(x)); }
template <class... Args>
void emplace(Args&&... args) {
q.emplace(forward<Args>(args)...);
}
void erase(T x) { q_erase.push(move(x)); }
decltype(auto) top() {
assert(!empty());
expose_top();
return q.top();
}
void pop() {
assert(!empty());
expose_top();
q.pop();
}
int size() { return int(q.size()) - int(q_erase.size()); }
bool empty() { return !size(); }
void expose_top() {
while (!q_erase.empty() && q_erase.top() == q.top()) {
q_erase.pop();
q.pop();
}
}
};
template <class T = long long, class PQMax = priority_queue<T>,
class PQMin = priority_queue<T, vector<T>, greater<T>>>
struct SlopeTrick {
static constexpr T INF = numeric_limits<T>::max() / 3;
T min_f = 0;
// acutual value of x in L is ADD_add_L(x) = x + add_L
T add_L = 0, add_R = 0;
PQMax L;
PQMin R;
T top_L() { return L.empty() ? -INF : L.top() + add_L; }
T top_R() { return R.empty() ? +INF : R.top() + add_R; }
void push_L(T x) { L.push(x - add_L); }
void push_R(T x) { R.push(x - add_R); }
T pushpop_L(T x) {
T L_max = top_L();
if (x >= L_max) return x;
L.pop();
push_L(x);
return L_max;
}
T pushpop_R(T x) {
T R_min = top_R();
if (x <= R_min) return x;
R.pop();
push_R(x);
return R_min;
}
// f(x) += c
void add_constant(T c) { min_f += c; }
// f(x) += max(x - a, 0)
void add_right_slope(T a) {
min_f += max<T>(top_L() - a, 0);
push_R(pushpop_L(a));
}
// f(x) += max(a - x, 0)
void add_left_slope(T a) {
min_f += max<T>(a - top_R(), 0);
push_L(pushpop_R(a));
}
// f(x) += abs(x - a)
void add_v(T a) {
add_right_slope(a);
add_left_slope(a);
}
void shift(T a, T b) {
assert(a <= b);
add_L += a;
add_R += b;
}
void shift(T a) { shift(a, a); }
// f(x) -= max(x - a, 0)
void erase_right_slope(T a) {
if (top_R() <= a) {
R.erase(a - add_R);
} else {
min_f -= top_R() - a;
L.erase(a - add_L);
push_L(top_R());
R.pop();
}
}
// f(x) -= max(a - x, 0)
void erase_left_slope(T a) {
if (a <= top_L()) {
L.erase(a - add_L);
} else {
min_f -= a - top_L();
R.erase(a - add_R);
push_R(top_L());
L.pop();
}
}
// f(x) -= abs(x - a)
void erase_v(T a) {
erase_right_slope(a);
erase_left_slope(a);
}
};
template <class T>
using ErasableSlopeTrick = SlopeTrick < T,
erasable_priority_queue<T>, erasable_priority_queue<T, greater<T>>>;
} int main() {
ios::sync_with_stdio(false);
cin.tie(0);
int n, k;
ll l, r;
cin >> n >> k >> l >> r;
r++;
ErasableSlopeTrick<ll> st;
vector<tuple<int, bool, ll>> shift_slope;
rep(_, n) {
ll a;
cin >> a;
ll la = l - a, ra = r - a;
auto lc = ceil_div(la, k);
auto rc = ceil_div(ra, k) - 1;
st.add_left_slope(lc);
st.add_right_slope(rc);
int nxt_l = la % k;
if (nxt_l < 0) nxt_l += k;
int nxt_r = ra % k;
if (nxt_r < 0) nxt_r += k;
if (nxt_l) shift_slope.emplace_back(nxt_l, 0, lc);
if (nxt_r) shift_slope.emplace_back(nxt_r, 1, rc);
}
ll ans = st.min_f;
sort(all(shift_slope), [](const auto& x, const auto& y) { return get<0>(x) > get<0>(y); });
rep(r, k) {
if (shift_slope.empty()) break;
r = get<0>(shift_slope.back());
while (shift_slope.size() && get<0>(shift_slope.back()) == r) {
auto [_, t, a] = shift_slope.back();
shift_slope.pop_back();
if (!t) st.erase_left_slope(a), st.add_left_slope(a - 1);
else st.erase_right_slope(a), st.add_right_slope(a - 1);
}
chmin(ans, st.min_f);
}
assert(shift_slope.empty());
cout << ans << '\n';
}
Kude