結果
| 問題 | No.366 ロボットソート |
| コンテスト | |
| ユーザー |
a01sa01to
|
| 提出日時 | 2025-12-24 01:12:39 |
| 言語 | C++23 (gcc 13.3.0 + boost 1.89.0) |
| 結果 |
AC
|
| 実行時間 | 2 ms / 2,000 ms |
| コード長 | 1,477 bytes |
| 記録 | |
| コンパイル時間 | 3,318 ms |
| コンパイル使用メモリ | 289,660 KB |
| 実行使用メモリ | 7,848 KB |
| 最終ジャッジ日時 | 2025-12-24 01:12:44 |
| 合計ジャッジ時間 | 4,751 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 23 |
コンパイルメッセージ
In file included from /usr/include/c++/13/algorithm:60,
from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:51,
from main.cpp:1:
In static member function ‘static constexpr _Up* std::__copy_move<_IsMove, true, std::random_access_iterator_tag>::__copy_m(_Tp*, _Tp*, _Up*) [with _Tp = const int; _Up = int; bool _IsMove = false]’,
inlined from ‘constexpr _OI std::__copy_move_a2(_II, _II, _OI) [with bool _IsMove = false; _II = const int*; _OI = int*]’ at /usr/include/c++/13/bits/stl_algobase.h:506:30,
inlined from ‘constexpr _OI std::__copy_move_a1(_II, _II, _OI) [with bool _IsMove = false; _II = const int*; _OI = int*]’ at /usr/include/c++/13/bits/stl_algobase.h:533:42,
inlined from ‘constexpr _OI std::__copy_move_a(_II, _II, _OI) [with bool _IsMove = false; _II = __gnu_cxx::__normal_iterator<const int*, vector<int> >; _OI = int*]’ at /usr/include/c++/13/bits/stl_algobase.h:540:31,
inlined from ‘constexpr _OI std::copy(_II, _II, _OI) [with _II = __gnu_cxx::__normal_iterator<const int*, vector<int> >; _OI = int*]’ at /usr/include/c++/13/bits/stl_algobase.h:633:7,
inlined from ‘static _ForwardIterator std::__uninitialized_copy<true>::__uninit_copy(_InputIterator, _InputIterator, _ForwardIterator) [with _InputIterator = __gnu_cxx::__normal_iterator<const int*, std::vector<int> >; _ForwardIterator = int*]’ at /usr/include/c++/13/bits/stl_uninitialized.h:147:27,
inlined from ‘_ForwardIterator std::uninitialized_copy(_InputIterator, _InputIterator, _ForwardIterator) [with _InputIterator = __gnu_cxx::__normal_iterator<const int*, vector<int> >; _ForwardIterator = int*]’ at /usr/include/c++/13/bits/stl_uninitialized.h:185:15,
inlined from ‘constexpr _ForwardIterator std::__uninitialized_copy_a(_InputIterator, _InputIterator, _ForwardIterator, allocator<_Tp>&) [with _InputIterator = __gnu_cxx::__normal_iterator<const int*, vector<int> >; _ForwardIterator = int*; _Tp = int]’ at /usr/
ソースコード
#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;
template<typename T, typename U>
pair<T, vector<U>> invNum(vector<U> a) {
size_t n = a.size();
if (n <= 1) return { (T) 0, a };
size_t mid = n / 2;
auto left = invNum<T, U>(vector<U>(a.begin(), a.begin() + mid));
auto right = invNum<T, U>(vector<U>(a.begin() + mid, a.end()));
vector<U> res;
T inv = 0;
inv += left.first + right.first;
size_t i = 0, j = 0;
while (i < left.second.size() && j < right.second.size()) {
if (left.second[i] <= right.second[j]) {
res.push_back(left.second[i]);
i++;
}
else {
res.push_back(right.second[j]);
j++;
inv += left.second.size() - i;
}
}
while (i < left.second.size()) {
res.push_back(left.second[i]);
i++;
}
while (j < right.second.size()) {
res.push_back(right.second[j]);
j++;
}
return { inv, res };
}
int main() {
cin.tie(nullptr)->sync_with_stdio(false);
int n, k;
cin >> n >> k;
vector<int> a(n);
rep(i, n) cin >> a[i];
vector bs(k, vector<int>(0));
rep(i, n) bs[i % k].push_back(a[i]);
ll ans = 0;
rep(i, k) {
ans += invNum<int, int>(bs[i]).first;
sort(bs[i].begin(), bs[i].end());
}
vector<int> b(n);
rep(i, n) b[i] = bs[i % k][i / k];
if (!is_sorted(b.begin(), b.end())) {
cout << -1 << '\n';
}
else {
cout << ans << '\n';
}
return 0;
}
a01sa01to