結果
| 問題 | No.1117 数列分割 |
| コンテスト | |
| ユーザー |
HEXAebmr
|
| 提出日時 | 2020-07-20 02:26:20 |
| 言語 | C++14 (gcc 15.2.0 + boost 1.89.0) |
| 結果 |
AC
|
| 実行時間 | 321 ms / 3,000 ms |
| コード長 | 4,891 bytes |
| 記録 | |
| コンパイル時間 | 1,456 ms |
| コンパイル使用メモリ | 121,172 KB |
| 実行使用メモリ | 79,336 KB |
| 最終ジャッジ日時 | 2024-12-18 00:11:16 |
| 合計ジャッジ時間 | 4,807 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 26 |
ソースコード
#include <iostream>
#include <iomanip>
#include <string>
#include <stack>
#include <vector>
#include <complex>
#include <math.h>
#include <stdio.h>
#include <algorithm>
#include <utility>
#include <functional>
#include <iterator>
#include <map>
#include <set>
#include <queue>
#include <list>
#include <regex>
#include <limits>
#include <time.h>
#include <cstdint>
using namespace std;
using pii = pair<int,int>;
using ll=long long;
using ld=long double;
#define pb push_back
#define mp make_pair
#define sc second
#define fr first
#define stpr setprecision
#define cYES cout<<"YES"<<endl
#define cNO cout<<"NO"<<endl
#define cYes cout<<"Yes"<<endl
#define cNo cout<<"No"<<endl
#define rep(i,n) for(ll i=0;i<(n);++i)
#define Rep(i,a,b) for(ll i=(a);i<(b);++i)
#define rrep(i,n) for(ll i=n-1;i>=0;i--)
#define rRep(i,a,b) for(ll i=a;i>=b;i--)
#define crep(i) for(char i='a';i<='z';++i)
#define psortsecond(A,N) sort(A,A+N,[](const pii &a, const pii &b){return a.second<b.second;});
#define ALL(x) (x).begin(),(x).end()
#define debug(v) cout<<#v<<":";for(auto x:v){cout<<x<<' ';}cout<<endl;
#define endl '\n'
int ctoi(const char c){
if('0' <= c && c <= '9') return (c-'0');
return -1;
}
ll gcd(ll a,ll b){return (b == 0 ? a : gcd(b, a%b));}
ll lcm(ll a,ll b){return a*b/gcd(a,b);}
constexpr ll MOD=1000000007;
constexpr ll INF=1000000011;
constexpr ll MOD2=998244353;
constexpr ll LINF = 1001002003004005006ll;
constexpr ld EPS=10e-8;
template <class T, class U> inline bool chmax(T& lhs, const U& rhs) { if (lhs < rhs) { lhs = rhs; return 1; } return 0; }
template <class T, class U> inline bool chmin(T& lhs, const U& rhs) { if (lhs > rhs) { lhs = rhs; return 1; } return 0; }
template<typename T> istream& operator>>(istream& is,vector<T>& v){for(auto&& x:v)is >> x;return is;}
template<typename T,typename U> istream& operator>>(istream& is, pair<T,U>& p){ is >> p.first; is >> p.second; return is;}
template<typename T,typename U> ostream& operator>>(ostream& os, const pair<T,U>& p){ os << p.first << ' ' << p.second; return os;}
template<class T> ostream& operator<<(ostream& os, vector<T>& v){
for(auto i=begin(v); i != end(v); ++i){
if(i !=begin(v)) os << ' ';
os << *i;
}
return os;
}
// modint
template <std::uint_fast64_t Modulus> class modint {
using u64 = std::uint_fast64_t;
public:
u64 a;
constexpr modint(const u64 x = 0) noexcept : a(x % Modulus) {}
constexpr u64 &value() noexcept { return a; }
constexpr const u64 &value() const noexcept { return a; }
constexpr modint operator+(const modint rhs) const noexcept {
return modint(*this) += rhs;
}
constexpr modint operator-(const modint rhs) const noexcept {
return modint(*this) -= rhs;
}
constexpr modint operator*(const modint rhs) const noexcept {
return modint(*this) *= rhs;
}
constexpr modint operator/(const modint rhs) const noexcept {
return modint(*this) /= rhs;
}
constexpr modint &operator+=(const modint rhs) noexcept {
a += rhs.a;
if (a >= Modulus) {
a -= Modulus;
}
return *this;
}
constexpr modint &operator-=(const modint rhs) noexcept {
if (a < rhs.a) {
a += Modulus;
}
a -= rhs.a;
return *this;
}
constexpr modint &operator*=(const modint rhs) noexcept {
a = a * rhs.a % Modulus;
return *this;
}
constexpr modint &operator/=(modint rhs) noexcept {
u64 exp = Modulus - 2;
while (exp) {
if (exp % 2) {
*this *= rhs;
}
rhs *= rhs;
exp /= 2;
}
return *this;
}
};
ll A[3007],sum[3007],dp[3007][3007];
bool SLcomp(ll a,ll b){
return a>b;
}
int main(){
ll N,K,M;
cin >> N >> K >> M;
rep(i,N){
cin >> A[i];
}
rep(i,N){
sum[i+1]=sum[i]+A[i];
}
rep(i,N+2){
rep(j,K+2){
dp[i][j]=-LINF;
}
}
vector<deque<pair<int, ll>>> dq1(K + 1), dq2(K + 1);
dq1[0].emplace_back(0, 0);
dq2[0].emplace_back(0, 0);
dp[0][0] = 0;
for (int i = 0; i < N; i++) {
for (int j = 1; j <= K; j++) {
ll mx1 = -INF;
ll mx2 = -INF;
while (!dq1[j - 1].empty() and dq1[j - 1].front().first < i + 1 - M) dq1[j - 1].pop_front();
while (!dq2[j - 1].empty() and dq2[j - 1].front().first < i + 1 - M) dq2[j - 1].pop_front();
if (!dq1[j - 1].empty()) mx1 = dq1[j - 1].front().second;
if (!dq2[j - 1].empty()) mx2 = dq2[j - 1].front().second;
chmax(dp[i + 1][j], mx1 - sum[i + 1]);
chmax(dp[i + 1][j], mx2 + sum[i + 1]);
}
for (int j = 0; j <= K; j++) {
while (!dq1[j].empty() and dq1[j].back().second < dp[i + 1][j] + sum[i + 1]) dq1[j].pop_back();
while (!dq2[j].empty() and dq2[j].back().second < dp[i + 1][j] - sum[i + 1]) dq2[j].pop_back();
dq1[j].emplace_back(i + 1, dp[i + 1][j] + sum[i + 1]);
dq2[j].emplace_back(i + 1, dp[i + 1][j] - sum[i + 1]);
}
}
cout << dp[N][K] << endl;
}
HEXAebmr