結果
問題 | No.1117 数列分割 |
ユーザー | keijak |
提出日時 | 2022-01-01 03:00:28 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 428 ms / 3,000 ms |
コード長 | 4,779 bytes |
コンパイル時間 | 3,230 ms |
コンパイル使用メモリ | 216,452 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-10-09 13:34:51 |
合計ジャッジ時間 | 7,809 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,248 KB |
testcase_02 | AC | 2 ms
5,248 KB |
testcase_03 | AC | 33 ms
5,248 KB |
testcase_04 | AC | 29 ms
5,248 KB |
testcase_05 | AC | 2 ms
5,248 KB |
testcase_06 | AC | 2 ms
5,248 KB |
testcase_07 | AC | 2 ms
5,248 KB |
testcase_08 | AC | 24 ms
5,248 KB |
testcase_09 | AC | 9 ms
5,248 KB |
testcase_10 | AC | 24 ms
5,248 KB |
testcase_11 | AC | 98 ms
5,248 KB |
testcase_12 | AC | 126 ms
5,248 KB |
testcase_13 | AC | 139 ms
5,248 KB |
testcase_14 | AC | 153 ms
5,248 KB |
testcase_15 | AC | 220 ms
5,248 KB |
testcase_16 | AC | 250 ms
5,248 KB |
testcase_17 | AC | 24 ms
5,248 KB |
testcase_18 | AC | 335 ms
5,248 KB |
testcase_19 | AC | 428 ms
5,248 KB |
testcase_20 | AC | 200 ms
5,248 KB |
testcase_21 | AC | 273 ms
5,248 KB |
testcase_22 | AC | 346 ms
5,248 KB |
testcase_23 | AC | 350 ms
5,248 KB |
testcase_24 | AC | 343 ms
5,248 KB |
testcase_25 | AC | 345 ms
5,248 KB |
testcase_26 | AC | 2 ms
5,248 KB |
testcase_27 | AC | 16 ms
5,248 KB |
testcase_28 | AC | 16 ms
5,248 KB |
ソースコード
#include <bits/stdc++.h> #define REP_(i, a_, b_, a, b, ...) for (int i = (a), END_##i = (b); i < END_##i; ++i) #define REP(i, ...) REP_(i, __VA_ARGS__, __VA_ARGS__, 0, __VA_ARGS__) #define ALL(x) std::begin(x), std::end(x) using Int = long long; using Uint = unsigned long long; using Real = long double; template<typename T, typename U> inline bool chmax(T &a, U b) { return a < b and ((a = std::move(b)), true); } template<typename T, typename U> inline bool chmin(T &a, U b) { return a > b and ((a = std::move(b)), true); } template<typename T> inline int ssize(const T &a) { return (int) a.size(); } struct Void {}; template<class T> inline std::ostream &print_one(const T &x, char endc) { if constexpr (std::is_same<T, Void>::value) { return std::cout; // print nothing } else if constexpr (std::is_same<T, bool>::value) { return std::cout << (x ? "Yes" : "No") << endc; } else { return std::cout << x << endc; } } template<class T> inline std::ostream &print(const T &x) { return print_one(x, '\n'); } template<typename T, typename... Ts> std::ostream &print(const T &head, Ts... tail) { return print_one(head, ' '), print(tail...); } inline std::ostream &print() { return std::cout << '\n'; } template<typename Container> std::ostream &print_seq(const Container &seq, const char *sep = " ", const char *ends = "\n", std::ostream &os = std::cout) { const auto itl = std::begin(seq), itr = std::end(seq); for (auto it = itl; it != itr; ++it) { if (it != itl) os << sep; os << *it; } return os << ends; } struct CastInput { template<typename T> operator T() const { T x; std::cin >> x; return x; } struct Sized { std::size_t n; template<typename T> operator T() const { T x(n); for (auto &e: x) std::cin >> e; return x; } }; Sized operator()(std::size_t n) const { return {n}; } } in; #ifdef MY_DEBUG #include "debug_dump.hpp" #include "backward.hpp" backward::SignalHandling kSignalHandling; #else #define DUMP(...) #define cerr if(false)cerr #endif using namespace std; template<typename Monoid> struct SWAGQueue { using T = typename Monoid::T; struct Node { T val, agg; Node(T val, T agg) : val(std::move(val)), agg(std::move(agg)) {} }; std::stack<Node> front_stack, back_stack; SWAGQueue() = default; bool empty() const { return front_stack.empty() and back_stack.empty(); } int size() const { return front_stack.size() + back_stack.size(); } void push_back(const T &x) { if (back_stack.empty()) { back_stack.emplace(x, x); } else { back_stack.emplace(x, Monoid::op(back_stack.top().agg, x)); } } void pop_front() { assert(!empty()); if (front_stack.empty()) { front_stack.emplace(back_stack.top().val, back_stack.top().val); back_stack.pop(); while (!back_stack.empty()) { T agg = Monoid::op(back_stack.top().val, front_stack.top().agg); front_stack.emplace(back_stack.top().val, std::move(agg)); back_stack.pop(); } } front_stack.pop(); } T fold() const { if (empty()) return Monoid::id(); if (front_stack.empty()) return back_stack.top().agg; if (back_stack.empty()) return front_stack.top().agg; return Monoid::op(front_stack.top().agg, back_stack.top().agg); } }; const Int kBig = 1e16; struct MaxOp { using T = long long; static T op(const T &x, const T &y) { return std::max(x, y); } static constexpr T id() { return -kBig; } }; auto solve() { int n = in, K = in, M = in; vector<Int> a = in(n); vector<Int> acc(n + 1); REP(i, n) acc[i + 1] = acc[i] + a[i]; vector<Int> acc_minus(n + 1); REP(i, n + 1) acc_minus[i] = -acc[i]; auto dp = vector(2, vector(n + 1, -kBig)); dp[0][0] = 0; REP(k, 1, K + 1) { vector<Int> nv1(n + 1, -kBig), nv2(n + 1, -kBig); for (int l = 0; l <= n; ++l) { Int v = dp[0][l]; if (v == -kBig) continue; nv1[l] = v - acc[l]; nv2[l] = v - acc_minus[l]; } SWAGQueue<MaxOp> rmq1, rmq2; REP(r, 1, n + 1) { rmq1.push_back(nv1[r - 1]); while (rmq1.size() > M) rmq1.pop_front(); if (auto v = rmq1.fold(); v != -kBig) { chmax(dp[1][r], v + acc[r]); } rmq2.push_back(nv2[r - 1]); while (rmq2.size() > M) rmq2.pop_front(); if (auto v = rmq2.fold(); v != -kBig) { chmax(dp[1][r], v + acc_minus[r]); } } swap(dp[0], dp[1]); dp[1].assign(n + 1, -kBig); } return dp[0][n]; } int main() { std::ios::sync_with_stdio(false), cin.tie(nullptr); cout << std::fixed << std::setprecision(18); const int T = 1;//in; REP(t, T) { auto ans = solve(); print(ans); } }