結果

問題 No.1077 Noelちゃんと星々4
ユーザー ebi_fly
提出日時 2023-11-15 02:25:53
言語 C++23
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 2 ms / 2,000 ms
コード長 7,596 bytes
コンパイル時間 2,350 ms
コンパイル使用メモリ 189,216 KB
実行使用メモリ 5,376 KB
最終ジャッジ日時 2024-09-26 04:26:36
合計ジャッジ時間 2,841 ms
ジャッジサーバーID
(参考情報)
judge2 / judge5
このコードへのチャレンジ
(要ログイン)
ファイルパターン 結果
sample AC * 2
other AC * 20
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

#line 1 "test/yuki/yuki_1077.test.cpp"
#define PROBLEM "https://yukicoder.me/problems/no/1077"
#line 1 "template/template.hpp"
#include <algorithm>
#include <bit>
#include <bitset>
#include <cassert>
#include <chrono>
#include <climits>
#include <cmath>
#include <complex>
#include <cstddef>
#include <cstdint>
#include <cstdlib>
#include <cstring>
#include <functional>
#include <iomanip>
#include <iostream>
#include <limits>
#include <map>
#include <memory>
#include <numbers>
#include <numeric>
#include <optional>
#include <queue>
#include <random>
#include <ranges>
#include <set>
#include <stack>
#include <string>
#include <tuple>
#include <type_traits>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
#define rep(i, a, n) for (int i = (int)(a); i < (int)(n); i++)
#define rrep(i, a, n) for (int i = ((int)(n)-1); i >= (int)(a); i--)
#define Rep(i, a, n) for (i64 i = (i64)(a); i < (i64)(n); i++)
#define RRep(i, a, n) for (i64 i = ((i64)(n)-i64(1)); i >= (i64)(a); i--)
#define all(v) (v).begin(), (v).end()
#define rall(v) (v).rbegin(), (v).rend()
#line 2 "template/debug_template.hpp"
#line 4 "template/debug_template.hpp"
namespace ebi {
#ifdef LOCAL
#define debug(...) \
std::cerr << "LINE: " << __LINE__ << " [" << #__VA_ARGS__ << "]:", \
debug_out(__VA_ARGS__)
#else
#define debug(...)
#endif
void debug_out() {
std::cerr << std::endl;
}
template <typename Head, typename... Tail> void debug_out(Head h, Tail... t) {
std::cerr << " " << h;
if (sizeof...(t) > 0) std::cerr << " :";
debug_out(t...);
}
} // namespace ebi
#line 2 "template/int_alias.hpp"
#line 4 "template/int_alias.hpp"
namespace ebi {
using std::size_t;
using i8 = std::int8_t;
using u8 = std::uint8_t;
using i16 = std::int16_t;
using u16 = std::uint16_t;
using i32 = std::int32_t;
using u32 = std::uint32_t;
using i64 = std::int64_t;
using u64 = std::uint64_t;
using i128 = __int128_t;
using u128 = __uint128_t;
} // namespace ebi
#line 2 "template/io.hpp"
#line 7 "template/io.hpp"
namespace ebi {
template <typename T1, typename T2>
std::ostream &operator<<(std::ostream &os, const std::pair<T1, T2> &pa) {
return os << pa.first << " " << pa.second;
}
template <typename T1, typename T2>
std::istream &operator>>(std::istream &os, std::pair<T1, T2> &pa) {
return os >> pa.first >> pa.second;
}
template <typename T>
std::ostream &operator<<(std::ostream &os, const std::vector<T> &vec) {
for (std::size_t i = 0; i < vec.size(); i++)
os << vec[i] << (i + 1 == vec.size() ? "" : " ");
return os;
}
template <typename T>
std::istream &operator>>(std::istream &os, std::vector<T> &vec) {
for (T &e : vec) std::cin >> e;
return os;
}
template <typename T>
std::ostream &operator<<(std::ostream &os, const std::optional<T> &opt) {
if (opt) {
os << opt.value();
} else {
os << "invalid value";
}
return os;
}
void fast_io() {
std::cout << std::fixed << std::setprecision(15);
std::cin.tie(nullptr);
std::ios::sync_with_stdio(false);
}
} // namespace ebi
#line 2 "template/utility.hpp"
#line 5 "template/utility.hpp"
#line 7 "template/utility.hpp"
namespace ebi {
template <class T> inline bool chmin(T &a, T b) {
if (a > b) {
a = b;
return true;
}
return false;
}
template <class T> inline bool chmax(T &a, T b) {
if (a < b) {
a = b;
return true;
}
return false;
}
template <class T> T safe_ceil(T a, T b) {
if (a % b == 0)
return a / b;
else if (a >= 0)
return (a / b) + 1;
else
return -((-a) / b);
}
template <class T> T safe_floor(T a, T b) {
if (a % b == 0)
return a / b;
else if (a >= 0)
return a / b;
else
return -((-a) / b) - 1;
}
constexpr i64 LNF = std::numeric_limits<i64>::max() / 4;
constexpr int INF = std::numeric_limits<int>::max() / 2;
const std::vector<int> dy = {1, 0, -1, 0, 1, 1, -1, -1};
const std::vector<int> dx = {0, 1, 0, -1, 1, -1, 1, -1};
} // namespace ebi
#line 2 "data_structure/slope_trick.hpp"
#line 6 "data_structure/slope_trick.hpp"
/*
reference: https://maspypy.com/slope-trick-1-%e8%a7%a3%e8%aa%ac%e7%b7%a8
*/
namespace ebi {
template <class T> struct slope_trick {
private:
using Self = slope_trick<T>;
void pop_L() {
if (L.empty()) return;
L.pop();
return;
}
T top_L() const {
if (L.empty()) return -INF;
return L.top() + add_L;
}
void push_L(const T &a) {
L.push(a - add_L);
return;
}
void pop_R() {
if (R.empty()) return;
R.pop();
return;
}
T top_R() const {
if (R.empty()) return INF;
return R.top() + add_R;
}
void push_R(const T &a) {
R.push(a - add_R);
return;
}
int size() {
return L.size() + R.size();
}
void swap(Self &a, Self &b) {
std::swap(a.min_f, b.min_f);
std::swap(a.L, b.L);
std::swap(a.R, b.R);
std::swap(a.add_L, b.add_L);
std::swap(a.add_R, b.add_R);
return;
}
public:
slope_trick() : min_f(0), add_L(0), add_R(0) {}
T min() const {
return min_f;
}
std::pair<T, T> argmin() const {
return {top_L(), top_R()};
}
void add_all(const T &a) {
min_f += a;
return;
}
// add (x-a)_+
void add_x_minus_a(const T &a) {
min_f += std::max(T(0), top_L() - a);
if (top_L() <= a) {
push_R(a);
} else {
push_L(a);
push_R(top_L());
pop_L();
}
return;
}
// add (a-x)_+
void add_a_minus_x(const T &a) {
min_f += std::max(T(0), a - top_R());
if (top_R() >= a) {
push_L(a);
} else {
push_R(a);
push_L(top_R());
pop_R();
}
return;
}
// add |x-a|
void add_abs(const T &a) {
add_x_minus_a(a);
add_a_minus_x(a);
return;
}
void sliding_window_minimum(const T &a, const T &b) {
assert(a <= b);
add_L += a;
add_R += b;
return;
}
void shift(const T &a) {
sliding_window_minimum(a, a);
}
void merge(Self &st) {
if (st.size() > size()) {
swap((*this), st);
}
min_f += st.min_f;
while (!st.L.empty()) {
add_a_minus_x(st.top_L());
st.pop_L();
}
while (!st.R.empty()) {
add_x_minus_a(st.top_R());
st.pop_R();
}
return;
}
// __/
void right_cumulative_min() {
L = std::priority_queue<T>();
}
// \__
void left_cumulative_min() {
R = std::priority_queue<T, std::vector<T>, std::greater<T>>();
}
private:
T min_f;
std::priority_queue<T> L;
std::priority_queue<T, std::vector<T>, std::greater<T>> R;
T add_L, add_R;
const T INF = std::numeric_limits<T>::max() / 4;
};
} // namespace ebi
#line 5 "test/yuki/yuki_1077.test.cpp"
namespace ebi {
void main_() {
int n;
std::cin >> n;
slope_trick<i64> st;
rep(i,0,n) {
i64 y;
std::cin >> y;
st.left_cumulative_min();
st.add_abs(y);
}
std::cout << st.min() << '\n';
}
} // namespace ebi
int main() {
ebi::fast_io();
int t = 1;
// std::cin >> t;
while (t--) {
ebi::main_();
}
return 0;
}
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