結果
問題 | No.1874 Minimum of Sum of Rectangles |
ユーザー |
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提出日時 | 2022-03-11 22:32:58 |
言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 133 ms / 3,000 ms |
コード長 | 4,210 bytes |
コンパイル時間 | 1,088 ms |
コンパイル使用メモリ | 105,444 KB |
最終ジャッジ日時 | 2025-01-28 08:50:37 |
ジャッジサーバーID (参考情報) |
judge1 / judge1 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 39 |
ソースコード
//#define NDEBUG#pragma warning(disable : 4146)#include <algorithm>#include <cassert>#include <cstddef>#include <cstdint>#include <iomanip>#include <ios>#include <iostream>#include <utility>#include <vector>namespace n91 {using i32 = std::int32_t;using i64 = std::int64_t;using u32 = std::uint32_t;using u64 = std::uint64_t;using isize = std::ptrdiff_t;using usize = std::size_t;using f64 = double;struct rep {struct itr {usize i;constexpr itr(const usize i) noexcept : i(i) {}void operator++() noexcept { ++i; }constexpr usize operator*() const noexcept { return i; }constexpr bool operator!=(const itr x) const noexcept { return i != x.i; }};const itr f, l;constexpr rep(const usize f, const usize l) noexcept: f(std::min(f, l)), l(l) {}constexpr auto begin() const noexcept { return f; }constexpr auto end() const noexcept { return l; }};struct revrep {struct itr {usize i;constexpr itr(const usize i) noexcept : i(i) {}void operator++() noexcept { --i; }constexpr usize operator*() const noexcept { return i; }constexpr bool operator!=(const itr x) const noexcept { return i != x.i; }};const itr f, l;constexpr revrep(const usize f, const usize l) noexcept: f(l - 1), l(std::min(f, l) - 1) {}constexpr auto begin() const noexcept { return f; }constexpr auto end() const noexcept { return l; }};template <class T> auto md_vec(const usize n, const T &value) {return std::vector<T>(n, value);}template <class... Args> auto md_vec(const usize n, Args... args) {return std::vector<decltype(md_vec(args...))>(n, md_vec(args...));}template <class T> constexpr T difference(const T &a, const T &b) noexcept {return a < b ? b - a : a - b;}template <class T> void chmin(T &a, const T &b) noexcept {if (b < a)a = b;}template <class T> void chmax(T &a, const T &b) noexcept {if (a < b)a = b;}template <class F> class rec_lambda {F f;public:rec_lambda(F &&f_) : f(std::forward<F>(f_)) {}template <class... Args> auto operator()(Args &&... args) const {return f(*this, std::forward<Args>(args)...);}};template <class T> T scan() {T ret;std::cin >> ret;return ret;}constexpr char eoln = '\n';i64 floor_div(const i64 n, const i64 d) {assert(d != 0);return n / d - static_cast<i64>((n ^ d) < 0 && n % d != 0);}i64 ceil_div(const i64 n, const i64 d) {assert(d != 0);return n / d + static_cast<i64>((n ^ d) >= 0 && n % d != 0);}#ifdef N91_LOCAL#define OJ_LOCAL(a, b) b#else#define OJ_LOCAL(a, b) a#endif} // namespace n91#include <atcoder/segtree>namespace n91 {struct S {i64 xy, x, y, c;i64 get(const i64 a, const i64 b) const {return xy * a * b + x * a + y * b + c;}};S op(S a, S b) { return {a.xy + b.xy, a.x + b.x, a.y + b.y, a.c + b.c}; }S e() { return {0, 0, 0, 0}; }void main_() {const usize n = scan<usize>();std::vector<std::pair<i64, i64>> ps(n);for (auto &[x, y] : ps) {std::cin >> x >> y;}static constexpr usize MAX = OJ_LOCAL(1000000, 100);atcoder::segtree<S, op, e> seg(MAX + 1);for (const auto &[x, y] : ps) {S s = seg.get(x);s.xy += 1;s.x -= y;s.y -= x;s.c += x * y;seg.set(x, s);}i64 ans = 1e18;std::sort(ps.begin(), ps.end(),[](const auto &a, const auto &b) { return a.second < b.second; });for (const auto &p : ps) {const i64 x = p.first;const i64 y = p.second;{const S all = seg.all_prod();const i64 all_d = all.xy * y + all.x;const usize i = seg.max_right(0, [&](const S s) {const i64 d = s.xy * y + s.x;return all_d - 2 * d <= 0;});const S s = seg.prod(0, i);const i64 f = all.get(i, y) - 2 * s.get(i, y);chmin(ans, f);}{S s = seg.get(x);s.xy -= 2;s.x += 2 * y;s.y += 2 * x;s.c -= 2 * x * y;seg.set(x, s);}}std::cout << ans << eoln;}} // namespace n91int main() {//*std::ios::sync_with_stdio(false);std::cin.tie(nullptr);//*/std::cout << std::fixed << std::setprecision(20);n91::main_();return 0;}