結果

問題 No.1838 Modulo Straight
ユーザー hitonanodehitonanode
提出日時 2021-12-19 17:05:03
言語 C++23
(gcc 12.3.0 + boost 1.83.0)
結果
AC  
実行時間 253 ms / 2,000 ms
コード長 6,266 bytes
コンパイル時間 3,373 ms
コンパイル使用メモリ 181,212 KB
実行使用メモリ 33,608 KB
最終ジャッジ日時 2024-09-15 14:38:46
合計ジャッジ時間 10,406 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge3
このコードへのチャレンジ
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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
5,376 KB
testcase_02 AC 2 ms
5,376 KB
testcase_03 AC 3 ms
5,376 KB
testcase_04 AC 2 ms
5,376 KB
testcase_05 AC 2 ms
5,376 KB
testcase_06 AC 2 ms
5,376 KB
testcase_07 AC 2 ms
5,376 KB
testcase_08 AC 3 ms
5,376 KB
testcase_09 AC 2 ms
5,376 KB
testcase_10 AC 3 ms
5,376 KB
testcase_11 AC 253 ms
33,484 KB
testcase_12 AC 249 ms
33,608 KB
testcase_13 AC 253 ms
33,604 KB
testcase_14 AC 253 ms
33,424 KB
testcase_15 AC 247 ms
33,484 KB
testcase_16 AC 209 ms
21,904 KB
testcase_17 AC 205 ms
21,900 KB
testcase_18 AC 204 ms
21,772 KB
testcase_19 AC 183 ms
18,156 KB
testcase_20 AC 183 ms
18,284 KB
testcase_21 AC 197 ms
18,160 KB
testcase_22 AC 74 ms
20,260 KB
testcase_23 AC 77 ms
16,812 KB
testcase_24 AC 67 ms
12,544 KB
testcase_25 AC 67 ms
12,928 KB
testcase_26 AC 75 ms
13,184 KB
testcase_27 AC 101 ms
13,312 KB
testcase_28 AC 104 ms
11,776 KB
testcase_29 AC 115 ms
12,928 KB
testcase_30 AC 122 ms
12,928 KB
testcase_31 AC 140 ms
13,568 KB
testcase_32 AC 148 ms
14,592 KB
testcase_33 AC 200 ms
22,020 KB
testcase_34 AC 202 ms
21,888 KB
testcase_35 AC 162 ms
15,644 KB
testcase_36 AC 153 ms
14,552 KB
testcase_37 AC 128 ms
12,288 KB
testcase_38 AC 112 ms
11,904 KB
testcase_39 AC 38 ms
12,416 KB
testcase_40 AC 2 ms
5,376 KB
権限があれば一括ダウンロードができます

ソースコード

diff # 

#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) (x)
#define dbgif(cond, x) 0
#endif

#include <atcoder/fenwicktree>

int main() {
    int M, K;
    cin >> M >> K;
    const int N = M * K;
    vector<int> A(N);
    cin >> A;
    vector<int> ord(N);
    vector<int> freq(M);
    vector<vector<int>> v2i(M);
    for (int i = 0; i < N; ++i) {
        ord[i] = A[i] + freq[A[i]] * M;
        v2i[A[i]].push_back(i);
        freq[A[i]]++;
    }
    long long current = 0;
    atcoder::fenwick_tree<int> bit(N);
    for (int i = 0; i < N; ++i) {
        current += bit.sum(ord[i], N);
        bit.add(ord[i], 1);
    }
    long long ret = current;
    vector<vector<int>> prvs(K);
    REP(i, N) {
        prvs.at(ord[i] / M).push_back(i);
    }
    for (auto &v : prvs) sort(v.begin(), v.end());

    for (auto &is : v2i) {
        dbg(is);
        for (int t = 0; t < K; ++t) {
            int i = is.at(t);
            // prvs.at(t).erase(i);
            int nlo = arglb(prvs.at(t), i);
            int nhi = M - 1 - nlo;
            current += nhi - nlo;
        }
        dbg(current);
        ret = min(ret, current);
    }
    cout << ret << '\n';
}
0