結果
問題 | No.1977 Extracting at Constant Intervals |
ユーザー | hitonanode |
提出日時 | 2022-06-26 10:33:44 |
言語 | C++23 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 22 ms / 2,000 ms |
コード長 | 6,429 bytes |
コンパイル時間 | 1,615 ms |
コンパイル使用メモリ | 176,212 KB |
実行使用メモリ | 6,240 KB |
最終ジャッジ日時 | 2024-11-16 11:17:38 |
合計ジャッジ時間 | 3,931 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
(要ログイン)
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 | 4 ms
5,248 KB |
testcase_03 | AC | 13 ms
5,248 KB |
testcase_04 | AC | 4 ms
5,248 KB |
testcase_05 | AC | 15 ms
5,248 KB |
testcase_06 | AC | 10 ms
5,248 KB |
testcase_07 | AC | 12 ms
5,504 KB |
testcase_08 | AC | 10 ms
5,248 KB |
testcase_09 | AC | 6 ms
5,248 KB |
testcase_10 | AC | 12 ms
5,248 KB |
testcase_11 | AC | 3 ms
5,248 KB |
testcase_12 | AC | 5 ms
5,248 KB |
testcase_13 | AC | 16 ms
5,504 KB |
testcase_14 | AC | 22 ms
6,240 KB |
testcase_15 | AC | 11 ms
5,248 KB |
testcase_16 | AC | 20 ms
6,208 KB |
testcase_17 | AC | 21 ms
5,248 KB |
testcase_18 | AC | 10 ms
5,248 KB |
testcase_19 | AC | 6 ms
5,248 KB |
testcase_20 | AC | 19 ms
5,248 KB |
testcase_21 | AC | 17 ms
5,248 KB |
testcase_22 | AC | 20 ms
6,080 KB |
testcase_23 | AC | 4 ms
5,248 KB |
testcase_24 | AC | 16 ms
5,248 KB |
testcase_25 | AC | 3 ms
5,248 KB |
testcase_26 | AC | 4 ms
5,248 KB |
testcase_27 | AC | 10 ms
5,248 KB |
testcase_28 | AC | 7 ms
5,248 KB |
testcase_29 | AC | 12 ms
5,248 KB |
testcase_30 | AC | 18 ms
5,248 KB |
testcase_31 | AC | 9 ms
5,248 KB |
testcase_32 | AC | 11 ms
5,248 KB |
ソースコード
#include <algorithm> #include <array> #include <bitset> #include <cassert> #include <chrono> #include <cmath> #include <complex> #include <deque> #include <forward_list> #include <fstream> #include <functional> #include <iomanip> #include <ios> #include <iostream> #include <limits> #include <list> #include <map> #include <numeric> #include <queue> #include <random> #include <set> #include <sstream> #include <stack> #include <string> #include <tuple> #include <type_traits> #include <unordered_map> #include <unordered_set> #include <utility> #include <vector> using namespace std; using lint = long long; using pint = pair<int, int>; using plint = pair<lint, lint>; struct fast_ios { fast_ios(){ cin.tie(nullptr), ios::sync_with_stdio(false), cout << fixed << setprecision(20); }; } fast_ios_; #define ALL(x) (x).begin(), (x).end() #define FOR(i, begin, end) for(int i=(begin),i##_end_=(end);i<i##_end_;i++) #define IFOR(i, begin, end) for(int i=(end)-1,i##_begin_=(begin);i>=i##_begin_;i--) #define REP(i, n) FOR(i,0,n) #define IREP(i, n) IFOR(i,0,n) template <typename T, typename V> void ndarray(vector<T>& vec, const V& val, int len) { vec.assign(len, val); } template <typename T, typename V, typename... Args> void ndarray(vector<T>& vec, const V& val, int len, Args... args) { vec.resize(len), for_each(begin(vec), end(vec), [&](T& v) { ndarray(v, val, args...); }); } template <typename T> bool chmax(T &m, const T q) { return m < q ? (m = q, true) : false; } template <typename T> bool chmin(T &m, const T q) { return m > q ? (m = q, true) : false; } int floor_lg(long long x) { return x <= 0 ? -1 : 63 - __builtin_clzll(x); } template <typename T1, typename T2> pair<T1, T2> operator+(const pair<T1, T2> &l, const pair<T1, T2> &r) { return make_pair(l.first + r.first, l.second + r.second); } template <typename T1, typename T2> pair<T1, T2> operator-(const pair<T1, T2> &l, const pair<T1, T2> &r) { return make_pair(l.first - r.first, l.second - r.second); } template <typename T> vector<T> sort_unique(vector<T> vec) { sort(vec.begin(), vec.end()), vec.erase(unique(vec.begin(), vec.end()), vec.end()); return vec; } template <typename T> int arglb(const std::vector<T> &v, const T &x) { return std::distance(v.begin(), std::lower_bound(v.begin(), v.end(), x)); } template <typename T> int argub(const std::vector<T> &v, const T &x) { return std::distance(v.begin(), std::upper_bound(v.begin(), v.end(), x)); } template <typename T> istream &operator>>(istream &is, vector<T> &vec) { for (auto &v : vec) is >> v; return is; } template <typename T> ostream &operator<<(ostream &os, const vector<T> &vec) { os << '['; for (auto v : vec) os << v << ','; os << ']'; return os; } template <typename T, size_t sz> ostream &operator<<(ostream &os, const array<T, sz> &arr) { os << '['; for (auto v : arr) os << v << ','; os << ']'; return os; } #if __cplusplus >= 201703L template <typename... T> istream &operator>>(istream &is, tuple<T...> &tpl) { std::apply([&is](auto &&... args) { ((is >> args), ...);}, tpl); return is; } template <typename... T> ostream &operator<<(ostream &os, const tuple<T...> &tpl) { os << '('; std::apply([&os](auto &&... args) { ((os << args << ','), ...);}, tpl); return os << ')'; } #endif template <typename T> ostream &operator<<(ostream &os, const deque<T> &vec) { os << "deq["; for (auto v : vec) os << v << ','; os << ']'; return os; } template <typename T> ostream &operator<<(ostream &os, const set<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; } template <typename T, typename TH> ostream &operator<<(ostream &os, const unordered_set<T, TH> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; } template <typename T> ostream &operator<<(ostream &os, const multiset<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; } template <typename T> ostream &operator<<(ostream &os, const unordered_multiset<T> &vec) { os << '{'; for (auto v : vec) os << v << ','; os << '}'; return os; } template <typename T1, typename T2> ostream &operator<<(ostream &os, const pair<T1, T2> &pa) { os << '(' << pa.first << ',' << pa.second << ')'; return os; } template <typename TK, typename TV> ostream &operator<<(ostream &os, const map<TK, TV> &mp) { os << '{'; for (auto v : mp) os << v.first << "=>" << v.second << ','; os << '}'; return os; } template <typename TK, typename TV, typename TH> ostream &operator<<(ostream &os, const unordered_map<TK, TV, TH> &mp) { os << '{'; for (auto v : mp) os << v.first << "=>" << v.second << ','; os << '}'; return os; } #ifdef HITONANODE_LOCAL const string COLOR_RESET = "\033[0m", BRIGHT_GREEN = "\033[1;32m", BRIGHT_RED = "\033[1;31m", BRIGHT_CYAN = "\033[1;36m", NORMAL_CROSSED = "\033[0;9;37m", RED_BACKGROUND = "\033[1;41m", NORMAL_FAINT = "\033[0;2m"; #define dbg(x) cerr << BRIGHT_CYAN << #x << COLOR_RESET << " = " << (x) << NORMAL_FAINT << " (L" << __LINE__ << ") " << __FILE__ << COLOR_RESET << endl #define dbgif(cond, x) ((cond) ? cerr << BRIGHT_CYAN << #x << COLOR_RESET << " = " << (x) << NORMAL_FAINT << " (L" << __LINE__ << ") " << __FILE__ << COLOR_RESET << endl : cerr) #else #define dbg(x) 0 #define dbgif(cond, x) 0 #endif constexpr lint INF = 1LL << 61; lint subsolve(vector<int> A, const lint M, const lint L) { const int N = A.size(); // N と L が互いに素 const lint len = N * M; vector<lint> asum(N * 2 + 1); vector<int> iinv(N); { lint cur = 0; REP(i, asum.size() - 1) { if (i < N) iinv[cur] = i; asum[i + 1] = asum[i] + A[cur]; cur = (cur + L) % N; } } auto eval = [&](lint h) -> lint { assert(0 <= h and h < L); int i = iinv[h % N]; lint subseq_len = 1 + (len - 1 - h) / L; lint circ = subseq_len / N; lint md = subseq_len % N; return asum[N] * circ + asum[i + md] - asum[i]; }; lint ret = -INF; for (lint h = 0; h < min<lint>(N, L); ++h) chmax(ret, eval(h)); for (lint h = max(0LL, L - N); h < L; ++h) chmax(ret, eval(h)); return ret; } int main() { int N, M; lint L; cin >> N >> M >> L; vector<int> A(N); cin >> A; int g = __gcd<lint>(N, L); lint ret = -INF; REP(d, g) { vector<int> atmp; for (int i = d; i < N; i += g) atmp.push_back(A[i]); chmax(ret, subsolve(atmp, M, L / g)); } cout << ret << endl; }