結果
問題 | No.1117 数列分割 |
ユーザー | theory_and_me |
提出日時 | 2020-07-18 02:01:55 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 2,121 ms / 3,000 ms |
コード長 | 3,736 bytes |
コンパイル時間 | 2,453 ms |
コンパイル使用メモリ | 213,348 KB |
実行使用メモリ | 215,040 KB |
最終ジャッジ日時 | 2024-11-30 08:43:11 |
合計ジャッジ時間 | 22,498 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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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 | 94 ms
19,456 KB |
testcase_04 | AC | 83 ms
17,792 KB |
testcase_05 | AC | 2 ms
5,248 KB |
testcase_06 | AC | 3 ms
5,248 KB |
testcase_07 | AC | 2 ms
5,248 KB |
testcase_08 | AC | 66 ms
16,000 KB |
testcase_09 | AC | 12 ms
6,912 KB |
testcase_10 | AC | 67 ms
16,256 KB |
testcase_11 | AC | 385 ms
58,496 KB |
testcase_12 | AC | 412 ms
62,464 KB |
testcase_13 | AC | 548 ms
85,504 KB |
testcase_14 | AC | 632 ms
90,112 KB |
testcase_15 | AC | 815 ms
110,336 KB |
testcase_16 | AC | 1,005 ms
124,672 KB |
testcase_17 | AC | 51 ms
16,000 KB |
testcase_18 | AC | 2,121 ms
214,912 KB |
testcase_19 | AC | 2,042 ms
214,912 KB |
testcase_20 | AC | 783 ms
105,344 KB |
testcase_21 | AC | 1,950 ms
215,040 KB |
testcase_22 | AC | 1,873 ms
212,096 KB |
testcase_23 | AC | 1,935 ms
211,840 KB |
testcase_24 | AC | 1,901 ms
208,768 KB |
testcase_25 | AC | 1,840 ms
208,512 KB |
testcase_26 | AC | 2 ms
5,248 KB |
testcase_27 | AC | 26 ms
10,880 KB |
testcase_28 | AC | 28 ms
10,752 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; typedef unsigned long long ull; typedef long long ll; typedef pair<int, int> pii; typedef pair<ll, ll> pll; typedef pair<double, double> pdd; typedef vector<ll> vl; typedef vector<vector<ll>> vvl; //typedef vector<vector<ll>> Graph; const ll mod = 1e9 + 7; //const ll mod = 998244353; #define REP(i,n) for(ll i=0;i<(ll)n;i++) #define dump(x) cerr << #x << " = " << (x) << endl; #define spa << " " << #define fi first #define se second template<class T> bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; } template<class T> bool chmin(T &a, const T &b) { if (a>b) { a=b; return 1; } return 0; } template<class S, class T> ostream& operator << (ostream& os, const pair<S, T> v){ os << "(" << v.first << ", " << v.second << ")"; return os; } template<class T> ostream& operator << (ostream& os, const vector<T> v){ for(int i = 0; i < (int)v.size(); i++){if(i > 0){os << " ";} os << v[i];} return os; } template<class T> ostream& operator << (ostream& os, const vector<vector<T>> v){ for(int i = 0; i < (int)v.size(); i++){if(i > 0){os << endl;} os << v[i];} return os; } template<typename T> void debug(vector<vector<T>>&v,ll h,ll w){for(ll i=0;i<h;i++) {cerr<<v[i][0];for(ll j=1;j<w;j++)cerr spa v[i][j];cerr<<endl;}}; template<typename T> void debug(vector<T>&v,ll n){if(n!=0)cerr<<v[0]; for(ll i=1;i<n;i++)cerr spa v[i]; cerr<<endl;}; template <class T, class Op> class queue_aggregation { private: class node { public: T val, sum; node(const T &val, const T &sum) : val(val), sum(sum) {} }; Op op; std::stack<node> front_stack, back_stack; public: queue_aggregation(const Op &op = Op()) : op(op), front_stack(), back_stack() {} bool empty() const { return front_stack.empty() && back_stack.empty(); } std::size_t size() const { return front_stack.size() + back_stack.size(); } T fold_all() const { assert(!empty()); if (front_stack.empty()) { return back_stack.top().sum; } else if (back_stack.empty()) { return front_stack.top().sum; } else { return op(front_stack.top().sum, back_stack.top().sum); } } void push(const T &x) { if (back_stack.empty()) { back_stack.emplace(x, x); } else { T s{op(back_stack.top().sum, x)}; back_stack.emplace(x, s); } } void pop() { 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 s{op(back_stack.top().val, front_stack.top().sum)}; front_stack.emplace(back_stack.top().val, s); back_stack.pop(); } } front_stack.pop(); } }; int main(){ cin.tie(0); ios::sync_with_stdio(false); ll N, K, M; cin >> N >> K >> M; vl A(N); REP(i, N) cin >> A[i]; const ll INF = (1ll<<60); vvl dp(N+1, vl(K+1, -INF)); vvl tmp1(N+1, vl(K+1, -INF)); vvl tmp2(N+1, vl(K+1, -INF)); vl S(N+1, 0); REP(i, N) S[i+1] = S[i] + A[i]; dp[0][0] = 0; auto f = [](ll x, ll y){ return max(x, y); }; for(int j=1;j<=K;j++){ REP(i, N+1) tmp1[i][j-1] = dp[i][j-1] + S[i]; REP(i, N+1) tmp2[i][j-1] = dp[i][j-1] - S[i]; queue_aggregation<ll, decltype(f)> qa1(f), qa2(f); for(int i=1;i<=N;i++){ qa1.push(tmp1[i-1][j-1]); qa2.push(tmp2[i-1][j-1]); ll ma1 = qa1.fold_all(); ll ma2 = qa2.fold_all(); chmax(dp[i][j], ma1 - S[i]); chmax(dp[i][j], ma2 + S[i]); if(i>=M) qa1.pop(); if(i>=M) qa2.pop(); } } cout << dp[N][K] << endl; return 0; }