結果

問題 No.2665 Minimize Inversions of Deque
ユーザー oteraotera
提出日時 2024-03-08 22:20:47
言語 C++17(gcc12)
(gcc 12.3.0 + boost 1.87.0)
結果
AC  
実行時間 88 ms / 2,000 ms
コード長 14,186 bytes
コンパイル時間 2,109 ms
コンパイル使用メモリ 217,540 KB
実行使用メモリ 14,532 KB
最終ジャッジ日時 2024-09-29 19:51:43
合計ジャッジ時間 5,964 ms
ジャッジサーバーID
(参考情報)
judge4 / judge1
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ファイルパターン 結果
other AC * 40
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ソースコード

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プレゼンテーションモードにする

/**
* author: otera
* created: 03.08.2024 21:23:28
**/
#include<bits/stdc++.h>
#include <cassert>
#include <vector>
#include <cassert>
#include <numeric>
#include <type_traits>
namespace atcoder {
namespace internal {
#ifndef _MSC_VER
template <class T>
using is_signed_int128 =
typename std::conditional<std::is_same<T, __int128_t>::value ||
std::is_same<T, __int128>::value,
std::true_type,
std::false_type>::type;
template <class T>
using is_unsigned_int128 =
typename std::conditional<std::is_same<T, __uint128_t>::value ||
std::is_same<T, unsigned __int128>::value,
std::true_type,
std::false_type>::type;
template <class T>
using make_unsigned_int128 =
typename std::conditional<std::is_same<T, __int128_t>::value,
__uint128_t,
unsigned __int128>;
template <class T>
using is_integral = typename std::conditional<std::is_integral<T>::value ||
is_signed_int128<T>::value ||
is_unsigned_int128<T>::value,
std::true_type,
std::false_type>::type;
template <class T>
using is_signed_int = typename std::conditional<(is_integral<T>::value &&
std::is_signed<T>::value) ||
is_signed_int128<T>::value,
std::true_type,
std::false_type>::type;
template <class T>
using is_unsigned_int =
typename std::conditional<(is_integral<T>::value &&
std::is_unsigned<T>::value) ||
is_unsigned_int128<T>::value,
std::true_type,
std::false_type>::type;
template <class T>
using to_unsigned = typename std::conditional<
is_signed_int128<T>::value,
make_unsigned_int128<T>,
typename std::conditional<std::is_signed<T>::value,
std::make_unsigned<T>,
std::common_type<T>>::type>::type;
#else
template <class T> using is_integral = typename std::is_integral<T>;
template <class T>
using is_signed_int =
typename std::conditional<is_integral<T>::value && std::is_signed<T>::value,
std::true_type,
std::false_type>::type;
template <class T>
using is_unsigned_int =
typename std::conditional<is_integral<T>::value &&
std::is_unsigned<T>::value,
std::true_type,
std::false_type>::type;
template <class T>
using to_unsigned = typename std::conditional<is_signed_int<T>::value,
std::make_unsigned<T>,
std::common_type<T>>::type;
#endif
template <class T>
using is_signed_int_t = std::enable_if_t<is_signed_int<T>::value>;
template <class T>
using is_unsigned_int_t = std::enable_if_t<is_unsigned_int<T>::value>;
template <class T> using to_unsigned_t = typename to_unsigned<T>::type;
} // namespace internal
} // namespace atcoder
namespace atcoder {
template <class T> struct fenwick_tree {
using U = internal::to_unsigned_t<T>;
public:
fenwick_tree() : _n(0) {}
explicit fenwick_tree(int n) : _n(n), data(n) {}
void add(int p, T x) {
assert(0 <= p && p < _n);
p++;
while (p <= _n) {
data[p - 1] += U(x);
p += p & -p;
}
}
T sum(int l, int r) {
assert(0 <= l && l <= r && r <= _n);
return sum(r) - sum(l);
}
private:
int _n;
std::vector<U> data;
U sum(int r) {
U s = 0;
while (r > 0) {
s += data[r - 1];
r -= r & -r;
}
return s;
}
};
} // namespace atcoder
namespace otera {
template <typename T>
struct compressor {
public:
static constexpr int absent = -1;
compressor() : _xs(std::vector<T>{}) {}
compressor(const std::vector<T> &vs) {
add(vs);
build();
}
void add(const std::vector<T> &vs) {
std::copy(vs.begin(), vs.end(), std::back_inserter(_xs));
}
void add(const T &e) {
_xs.emplace_back(e);
}
void build() {
std::sort(_xs.begin(), _xs.end());
_xs.erase(std::unique(_xs.begin(), _xs.end()), _xs.end());
}
int size() const {
return _xs.size();
}
bool has_key(const T &e) const {
return std::binary_search(_xs.begin(), _xs.end(), e);
}
std::vector<int> get(const std::vector<T> &vs) const {
std::vector<int> res;
std::transform(vs.begin(), vs.end(), std::back_inserter(res), [&](const T &e) {
return get(e);
});
return res;
}
int get(const T &e, int default_value = absent) const {
const int id = min_geq_index(e);
return id != size() and _xs[id] == e ? id : default_value;
}
const T &operator[](int compressed_index) const {
return _xs[compressed_index];
}
T min_gt(const T &e, const T &default_value) const {
auto it = std::upper_bound(_xs.begin(), _xs.end(), e);
return it == _xs.end() ? default_value : *it;
}
T min_geq(const T &e, const T &default_value) const {
auto it = std::lower_bound(_xs.begin(), _xs.end(), e);
return it == _xs.end() ? default_value : *it;
}
T max_lt(const T &e, const T &default_value) const {
auto it = std::lower_bound(_xs.begin(), _xs.end(), e);
return it == _xs.begin() ? default_value : *std::prev(it);
}
T max_leq(const T &e, const T &default_value) const {
auto it = std::upper_bound(_xs.begin(), _xs.end(), e);
return it == _xs.begin() ? default_value : *std::prev(it);
}
int min_gt_index(const T &e) const {
return std::upper_bound(_xs.begin(), _xs.end(), e) - _xs.begin();
}
int min_geq_index(const T &e) const {
return std::lower_bound(_xs.begin(), _xs.end(), e) - _xs.begin();
}
int max_lt_index(const T &e) const {
return int(std::lower_bound(_xs.begin(), _xs.end(), e)- _xs.begin()) - 1;
}
int max_leq_index(const T &e) const {
return int(std::upper_bound(_xs.begin(), _xs.end(), e)- _xs.begin()) - 1;
}
private:
std::vector<T> _xs;
};
} // namespace otera
namespace otera {
template<typename T>
long long inversion_number(std::vector<T> a) {
int _n = (int)a.size();
compressor<T> ca(a);
int _sz = (int)ca.size();
atcoder::fenwick_tree<T> bit(_sz);
long long res = 0;
for(int i = 0; i < _n; ++ i) {
int _pos = ca.get(a[i]);
res += (long long)bit.sum(_pos + 1, _sz);
bit.add(_pos, 1);
}
return res;
}
} // namespace otera
namespace otera {}
using namespace std;
using namespace otera;
struct io_setup {
io_setup(int precision = 20) {
ios::sync_with_stdio(false);
cin.tie(0);
cout << fixed << setprecision(precision);
}
} io_setup_ {};
#define int long long
using ll = long long;
using ld = long double;
using ull = unsigned long long;
using i128 = __int128_t;
using u128 = __uint128_t;
#define repa(i, n) for(int i = 0; i < (n); ++ i)
#define repb(i, a, b) for(int i = (a); i < (b); ++ i)
#define repc(i, a, b, c) for(int i = (a); i < (b); i += (c))
#define overload4(a, b, c, d, e, ...) e
#define overload3(a, b, c, d, ...) d
#define rep(...) overload4(__VA_ARGS__, repc, repb, repa)(__VA_ARGS__)
#define rep1a(i, n) for(int i = 1; i <= (n); ++ i)
#define rep1b(i, a, b) for(int i = (a); i <= (b); ++ i)
#define rep1c(i, a, b, c) for(int i = (a); i <= (b); i += (c))
#define rep1(...) overload4(__VA_ARGS__, rep1c, rep1b, rep1a)(__VA_ARGS__)
#define rev_repa(i, n) for(int i=(n)-1;i>=0;i--)
#define rev_repb(i, a, b) for(int i=(b)-1;i>=(a);i--)
#define rev_rep(...) overload3(__VA_ARGS__, rev_repb, rev_repa)(__VA_ARGS__)
#define rev_rep1a(i, n) for(int i=(n);i>=1;i--)
#define rev_rep1b(i, a, b) for(int i=(b);i>=(a);i--)
#define rev_rep1(...) overload3(__VA_ARGS__, rev_rep1b, rev_rep1a)(__VA_ARGS__)
#define for_subset(t, s) for(ll t = (s); t >= 0; t = (t == 0 ? -1 : (t - 1) & (s)))
typedef pair<int, int> P;
typedef pair<ll, ll> LP;
#define pb push_back
#define pf push_front
#define ppb pop_back
#define ppf pop_front
#define eb emplace_back
#define mkp make_pair
#define mkt make_tuple
#define fr first
#define sc second
#define all(c) std::begin(c), std::end(c)
#define rall(c) std::rbegin(c), std::rend(c)
#define lb(c, x) distance(std::begin(c), lower_bound(all(c), (x)))
#define ub(c, x) distance(std::begin(c), upper_bound(all(c), (x)))
#define Sort(a) sort(all(a))
#define Rev(a) reverse(all(a))
#define Uniq(a) sort(all(a));(a).erase(unique(all(a)),std::end(a))
#define si(c) (int)(c).size()
inline ll popcnt(ull a){ return __builtin_popcountll(a); }
#define kth_bit(x, k) ((x>>k)&1)
#define unless(A) if(!(A))
#define elif else if
ll modulo(ll n, ll d){ return (n % d + d) % d; };
ll intpow(ll a, ll b){ ll ans = 1; while(b){ if(b & 1) ans *= a; a *= a; b /= 2; } return ans; }
ll intpow(ll a, ll b, ll m) {ll ans = 1; while(b){ if(b & 1) (ans *= a) %= m; (a *= a) %= m; b /= 2; } return ans; }
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
template <typename T> constexpr inline int pow_m1(T n) { return -(n & 1) | 1; }
template <typename T> constexpr inline T fld(const T x, const T y) { return (x ^ y) >= 0 ? x / y : (x - (y + pow_m1(y >= 0))) / y; }
template <typename T> constexpr inline T cld(const T x, const T y) { return (x ^ y) <= 0 ? x / y : (x + (y + pow_m1(y >= 0))) / y; }
#define INT(...) int __VA_ARGS__;in(__VA_ARGS__)
#define LL(...) ll __VA_ARGS__;in(__VA_ARGS__)
#define ULL(...) ull __VA_ARGS__;in(__VA_ARGS__)
#define STR(...) string __VA_ARGS__;in(__VA_ARGS__)
#define CHR(...) char __VA_ARGS__;in(__VA_ARGS__)
#define DBL(...) double __VA_ARGS__;in(__VA_ARGS__)
#define LD(...) ld __VA_ARGS__;in(__VA_ARGS__)
#define vec(type,name,...) vector<type>name(__VA_ARGS__)
#define VEC(type,name,size) vector<type>name(size);in(name)
#define vv(type,name,h,...) vector<vector<type>>name(h,vector<type>(__VA_ARGS__))
#define VV(type,name,h,w) vector<vector<type>>name(h,vector<type>(w));in(name)
#define vvv(type,name,h,w,...) vector<vector<vector<type>>>name(h,vector<vector<type>>(w,vector<type>(__VA_ARGS__)))
template <class T> using vc = vector<T>;
template <class T> using vvc = vector<vc<T>>;
template <class T> using vvvc = vector<vvc<T>>;
template <class T> using vvvvc = vector<vvvc<T>>;
template <class T> using pq = priority_queue<T>;
template <class T> using pqg = priority_queue<T, vector<T>, greater<T>>;
template <class T, class U> using umap = unordered_map<T, U>;
template<class T> void scan(T& a){ cin >> a; }
template<class T> void scan(vector<T>& a){ for(auto&& i : a) scan(i); }
void in(){}
template <class Head, class... Tail> void in(Head& head, Tail&... tail){ scan(head); in(tail...); }
void print(){ cout << ' '; }
template<class T> void print(const T& a){ cout << a; }
template<class T> void print(const vector<T>& a){ if(a.empty()) return; print(a[0]); for(auto i = a.begin(); ++i != a.end(); ){ cout << ' '; print(*i
    ); } }
int out(){ cout << '\n'; return 0; }
template<class T> int out(const T& t){ print(t); cout << '\n'; return 0; }
template<class Head, class... Tail> int out(const Head& head, const Tail&... tail){ print(head); cout << ' '; out(tail...); return 0; }
#define CHOOSE(a) CHOOSE2 a
#define CHOOSE2(a0,a1,a2,a3,a4,x,...) x
#define debug_1(x1) cout<<#x1<<": "<<x1<<endl
#define debug_2(x1,x2) cout<<#x1<<": "<<x1<<", "#x2<<": "<<x2<<endl
#define debug_3(x1,x2,x3) cout<<#x1<<": "<<x1<<", "#x2<<": "<<x2<<", "#x3<<": "<<x3<<endl
#define debug_4(x1,x2,x3,x4) cout<<#x1<<": "<<x1<<", "#x2<<": "<<x2<<", "#x3<<": "<<x3<<", "#x4<<": "<<x4<<endl
#define debug_5(x1,x2,x3,x4,x5) cout<<#x1<<": "<<x1<<", "#x2<<": "<<x2<<", "#x3<<": "<<x3<<", "#x4<<": "<<x4<<", "#x5<<": "<<x5<<endl
#ifdef DEBUG
#define debug(...) CHOOSE((__VA_ARGS__,debug_5,debug_4,debug_3,debug_2,debug_1,~))(__VA_ARGS__)
#define dump(...) { print(#__VA_ARGS__); print(":"); out(__VA_ARGS__); }
#else
#define debug(...)
#define dump(...)
#endif
void solve() {
INT(n);
VEC(int, p, n);
rep(i, n) {
-- p[i];
}
atcoder::fenwick_tree<int> bit(n);
deque<int> ans;
rep(i, n) {
int pre = bit.sum(0, p[i]);
int post = bit.sum(p[i] + 1, n);
if(pre == post) {
if(ans.front() < p[i] + 1) {
ans.push_back(p[i] + 1);
} else {
ans.push_front(p[i] + 1);
}
} else if(pre < post) {
ans.push_front(p[i] + 1);
} else {
ans.push_back(p[i] + 1);
}
bit.add(p[i], 1);
}
vc<int> res;
for(int x: ans) {
res.eb(x);
}
int sum = inversion_number(res);
out(sum);
out(res);
}
signed main() {
int testcase = 1;
in(testcase);
while(testcase--) solve();
return 0;
}
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