結果

問題 No.2656 XOR Slimes
ユーザー ecottea
提出日時 2024-03-01 23:00:19
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 85 ms / 2,000 ms
コード長 18,587 bytes
コンパイル時間 5,737 ms
コンパイル使用メモリ 294,776 KB
最終ジャッジ日時 2025-02-19 22:59:23
ジャッジサーバーID
(参考情報)
judge4 / judge2
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 4
other AC * 55
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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

#ifndef HIDDEN_IN_VS //
//
#define _CRT_SECURE_NO_WARNINGS
//
#include <bits/stdc++.h>
using namespace std;
//
using ll = long long; using ull = unsigned long long; // -2^63 2^63 = 9 * 10^18int -2^31 2^31 = 2 * 10^9
using pii = pair<int, int>; using pll = pair<ll, ll>; using pil = pair<int, ll>; using pli = pair<ll, int>;
using vi = vector<int>; using vvi = vector<vi>; using vvvi = vector<vvi>; using vvvvi = vector<vvvi>;
using vl = vector<ll>; using vvl = vector<vl>; using vvvl = vector<vvl>; using vvvvl = vector<vvvl>;
using vb = vector<bool>; using vvb = vector<vb>; using vvvb = vector<vvb>;
using vc = vector<char>; using vvc = vector<vc>; using vvvc = vector<vvc>;
using vd = vector<double>; using vvd = vector<vd>; using vvvd = vector<vvd>;
template <class T> using priority_queue_rev = priority_queue<T, vector<T>, greater<T>>;
using Graph = vvi;
//
const double PI = acos(-1);
const vi DX = { 1, 0, -1, 0 }; // 4
const vi DY = { 0, 1, 0, -1 };
int INF = 1001001001; ll INFL = 4004004003104004004LL; // (int)INFL = 1010931620;
//
struct fast_io { fast_io() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(18); } } fastIOtmp;
//
#define all(a) (a).begin(), (a).end()
#define sz(x) ((int)(x).size())
#define lbpos(a, x) (int)distance((a).begin(), std::lower_bound(all(a), x))
#define ubpos(a, x) (int)distance((a).begin(), std::upper_bound(all(a), x))
#define Yes(b) {cout << ((b) ? "Yes\n" : "No\n");}
#define rep(i, n) for(int i = 0, i##_len = int(n); i < i##_len; ++i) // 0 n-1
#define repi(i, s, t) for(int i = int(s), i##_end = int(t); i <= i##_end; ++i) // s t
#define repir(i, s, t) for(int i = int(s), i##_end = int(t); i >= i##_end; --i) // s t
#define repe(v, a) for(const auto& v : (a)) // a
#define repea(v, a) for(auto& v : (a)) // a
#define repb(set, d) for(int set = 0, set##_ub = 1 << int(d); set < set##_ub; ++set) // d
#define repis(i, set) for(int i = lsb(set), bset##i = set; i >= 0; bset##i -= 1 << i, i = lsb(bset##i)) // set
#define repp(a) sort(all(a)); for(bool a##_perm = true; a##_perm; a##_perm = next_permutation(all(a))) // a
#define smod(n, m) ((((n) % (m)) + (m)) % (m)) // mod
#define uniq(a) {sort(all(a)); (a).erase(unique(all(a)), (a).end());} //
#define EXIT(a) {cout << (a) << endl; exit(0);} //
#define inQ(x, y, u, l, d, r) ((u) <= (x) && (l) <= (y) && (x) < (d) && (y) < (r)) //
//
template <class T> inline ll powi(T n, int k) { ll v = 1; rep(i, k) v *= n; return v; }
template <class T> inline bool chmax(T& M, const T& x) { if (M < x) { M = x; return true; } return false; } // true
    
template <class T> inline bool chmin(T& m, const T& x) { if (m > x) { m = x; return true; } return false; } // true
    
template <class T> inline T get(T set, int i) { return (set >> i) & T(1); }
//
template <class T, class U> inline istream& operator>>(istream& is, pair<T, U>& p) { is >> p.first >> p.second; return is; }
template <class T> inline istream& operator>>(istream& is, vector<T>& v) { repea(x, v) is >> x; return is; }
template <class T> inline vector<T>& operator--(vector<T>& v) { repea(x, v) --x; return v; }
template <class T> inline vector<T>& operator++(vector<T>& v) { repea(x, v) ++x; return v; }
#endif //
#if __has_include(<atcoder/all>)
#include <atcoder/all>
using namespace atcoder;
#ifdef _MSC_VER
#include "localACL.hpp"
#endif
//using mint = modint1000000007;
using mint = modint998244353;
//using mint = modint; // mint::set_mod(m);
namespace atcoder {
inline istream& operator>>(istream& is, mint& x) { ll x_; is >> x_; x = x_; return is; }
inline ostream& operator<<(ostream& os, const mint& x) { os << x.val(); return os; }
}
using vm = vector<mint>; using vvm = vector<vm>; using vvvm = vector<vvm>; using vvvvm = vector<vvvm>;
#endif
#ifdef _MSC_VER // Visual Studio
#include "local.hpp"
#else // gcc
inline int popcount(int n) { return __builtin_popcount(n); }
inline int popcount(ll n) { return __builtin_popcountll(n); }
inline int lsb(int n) { return n != 0 ? __builtin_ctz(n) : -1; }
inline int lsb(ll n) { return n != 0 ? __builtin_ctzll(n) : -1; }
inline int msb(int n) { return n != 0 ? (31 - __builtin_clz(n)) : -1; }
inline int msb(ll n) { return n != 0 ? (63 - __builtin_clzll(n)) : -1; }
#define dump(...)
#define dumpel(v)
#define dump_list(v)
#define dump_mat(v)
#define input_from_file(f)
#define output_to_file(f)
#define Assert(b) { if (!(b)) while (1) cout << "OLE"; }
#endif
//
/*
* Wavelet_matrix<T>(vT a) : O(n log n)
* a[0..n)
*
* T get(int i) : O(log n)
* i
*
* T get(int l, int r, int i) : O(log n)
* a[l..r) i
*
* int count(int l, int r, T v) : O(log n)
* a[l..r) v
*
* int count(int l, int r, T v0, T v1) : O(log n)
* a[l..r) [v0..v1)
* {(i, a[i])}
*
* int position(T v, int c) : O((log n)^2)
* c v
*
* ll sum(int l, int r) : O(1)
* a[l..r)
*
* ll sum(int l, int r, T v0, T v1) : O(log n)
* a[l..r) [v0..v1)
*
* ll abs_sum(int l, int r, T v) : O(log n)
* Σi∈[l..r) |a[i] - v|
*/
template <class T>
class Wavelet_matrix {
// : https://miti-7.hatenablog.com/entry/2018/04/28/152259
int n; //
int k; // msb
vi bs; // bs[i][j] : j+1 a[i] j
array<vvi, 2> bs_acc; // bs_acc[b] : bs[*][b] b=0,1
vi num_zeros; // num_zeros[j] : bs[j] 0
vi id; //
vector<vector<T>> acc; // acc[j] : j a
vector<T> val; //
// a[0..r) v
int count_sub(int r, int v) {
// 0
if (!id[v]) return 0;
//
repir(j, k - 1, 0) {
//
if (v >> j & 1) {
r = num_zeros[j] + bs_acc[1][j][r];
}
else {
r = bs_acc[0][j][r];
}
}
return r - id[v];
}
// a[l..r) [0..v)
int count_rsub(int l, int r, int v) {
int cnt = 0;
repir(j, k - 1, 0) {
if (v >> j & 1) {
cnt += bs_acc[0][j][r] - bs_acc[0][j][l];
r = num_zeros[j] + bs_acc[1][j][r];
l = num_zeros[j] + bs_acc[1][j][l];
}
else {
r = bs_acc[0][j][r];
l = bs_acc[0][j][l];
}
}
return cnt;
}
// a[l..r) [0..v)
T sum_rsub(int l, int r, int v) {
T res = 0;
repir(j, k - 1, 0) {
if (v >> j & 1) {
res += acc[j][bs_acc[0][j][r]] - acc[j][bs_acc[0][j][l]];
r = num_zeros[j] + bs_acc[1][j][r];
l = num_zeros[j] + bs_acc[1][j][l];
}
else {
r = bs_acc[0][j][r];
l = bs_acc[0][j][l];
}
}
return res;
}
public:
// t
Wavelet_matrix(const vector<T>& a) : n(sz(a)) {
// verify : https://judge.yosupo.jp/problem/static_range_frequency
// a[0..n) t[0..n)
val = a;
uniq(val);
val.emplace_back((T)INFL + 1);
vi t(n);
rep(i, n) t[i] = lbpos(val, a[i]);
k = msb(sz(val)) + 1;
bs = vi(n);
bs_acc[0] = bs_acc[1] = vvi(k, vi(n + 1));
num_zeros = vi(k);
id = vi(sz(val), -1);
acc = vector<vector<T>>(k + 1, vector<T>(n + 1));
// j :
repir(j, k - 1, 0) {
rep(i, n) {
// 1
bs[i] += t[i] & T(1) << j;
// 0, 1
rep(b, 2) bs_acc[b][j][i + 1] = bs_acc[b][j][i];
if (t[i] >> j & 1) {
bs_acc[1][j][i + 1]++;
}
else {
bs_acc[0][j][i + 1]++;
num_zeros[j]++;
}
//
acc[j + 1][i + 1] = acc[j + 1][i] + val[t[i]];
}
// 0 1
vi nt0, nt1;
rep(i, n) {
if (t[i] >> j & 1) nt1.push_back(t[i]);
else nt0.push_back(t[i]);
}
t.clear();
repe(x, nt0) t.push_back(x);
repe(x, nt1) t.push_back(x);
}
rep(i, n) {
//
if (id[t[i]] != -1) id[t[i]] = i;
//
acc[0][i + 1] = acc[0][i] + val[t[i]];
}
}
Wavelet_matrix() : n(0), k(0) {}
// c v
int position(T v, int c) {
int ord = lbpos(val, v);
if (val[ord] != v) return -1;
int i = id[ord] + c;
rep(j, k) {
if (ord >> j & 1) {
i = ubpos(bs_acc[1][j], i - num_zeros[j]) - 1;
}
else {
i = ubpos(bs_acc[0][j], i - num_zeros[j]) - 1;
}
}
return i;
}
// i
T get(int i) {
Assert(0 <= i && i < n);
int ord = 0;
//
repir(j, k - 1, 0) {
ord <<= 1;
//
if (bs[i] >> j & 1) {
ord++;
i = num_zeros[j] + bs_acc[1][j][i];
}
else {
i = bs_acc[0][j][i];
}
}
return val[ord];
}
// a[l..r) i
T get(int l, int r, int i) {
// verify : https://judge.yosupo.jp/problem/range_kth_smallest
chmax(l, 0); chmin(r, n);
Assert(0 <= i && i < r - l);
int ord = 0;
repir(j, k - 1, 0) {
ord <<= 1;
int cnt0 = bs_acc[0][j][r] - bs_acc[0][j][l];
if (i >= cnt0) {
ord++;
l = num_zeros[j] + bs_acc[1][j][l];
r = num_zeros[j] + bs_acc[1][j][r];
i -= cnt0;
}
else {
l = bs_acc[0][j][l];
r = bs_acc[0][j][r];
}
}
return val[ord];
}
// a[l..r) v
int count(int l, int r, T v) {
// verify : https://judge.yosupo.jp/problem/static_range_frequency
chmax(l, 0); chmin(r, n);
if (l >= r) return 0;
int ord = lbpos(val, v);
if (val[ord] != v) return 0;
return count_sub(r, ord) - count_sub(l, ord);
}
// a[l..r) [v0..v1)
int count(int l, int r, T v0, T v1) {
// verify : https://atcoder.jp/contests/arc097/tasks/arc097_c
chmax(l, 0); chmin(r, n);
if (l >= r || v0 >= v1) return 0;
int ord0 = lbpos(val, v0);
int ord1 = lbpos(val, v1);
return count_rsub(l, r, ord1) - count_rsub(l, r, ord0);
}
// a[l..r)
T sum(int l, int r) {
// verify : https://judge.yosupo.jp/problem/static_range_sum
chmax(l, 0); chmin(r, n);
if (l >= r) return 0;
return acc[k][r] - acc[k][l];
}
// a[l..r) [v0..v1)
T sum(int l, int r, T v0, T v1) {
// verify : https://atcoder.jp/contests/abc339/tasks/abc339_g
chmax(l, 0); chmin(r, n);;
if (l >= r || v0 >= v1) return 0;
int ord0 = lbpos(val, v0);
int ord1 = lbpos(val, v1);
return sum_rsub(l, r, ord1) - sum_rsub(l, r, ord0);
}
// Σi∈[l..r) |a[i] - v|
T abs_sum(int l, int r, T v) {
// verify : https://yukicoder.me/problems/no/2169
chmax(l, 0); chmin(r, n);
if (l >= r) return 0;
int ord = lbpos(val, v);
T res = sum_rsub(l, r, (1 << k) - 1);
res -= (r - l) * v;
res -= 2 * sum_rsub(l, r, ord);
res += 2 * count_rsub(l, r, ord) * v;
return res;
}
};
//Sparse Table
/*
* Sparse_table<T>(vS a, bool min_flag = true) : O(n log n)
* a[0..n) min_flag = true[false] []
*
* T get(int l, int r) : O(1)
* min a[l..r) numeric_limits<T>::max()
*/
template <class T>
class Sparse_table {
// : https://tookunn.hatenablog.com/entry/2016/07/13/211148
int n, m;
bool min_flag;
// acc[j][i] : min a[i..i+2^j)
vector<vector<T>> acc;
public:
// a[0..n) min_flag = true[false] []
Sparse_table(const vector<T>& a, bool min_flag = true)
: n(sz(a)), m(msb(n) + 1), min_flag(min_flag), acc(m, vector<T>(n))
{
// verify : https://atcoder.jp/contests/arc045/tasks/arc045_b
rep(i, n) acc[0][i] = a[i];
if (!min_flag) rep(i, n) acc[0][i] *= -1;
repi(j, 1, m - 1) {
int d = 1 << (j - 1);
rep(i, n - d) {
// acc[j - 1]
// acc[j][i] get
acc[j][i] = min(acc[j - 1][i], acc[j - 1][i + d]);
}
}
}
Sparse_table() : n(0), m(0), min_flag(true) {}
// min a[l..r)
T get(int l, int r) {
// verify : https://atcoder.jp/contests/arc045/tasks/arc045_b
chmax(l, 0); chmin(r, n);
if (l >= r) {
if (min_flag) return numeric_limits<T>::max();
else return numeric_limits<T>::lowest();
}
int j = msb(r - l);
return min(acc[j][l], acc[j][r - (1 << j)]) * (min_flag ? 1 : -1);
}
#ifdef _MSC_VER
friend ostream& operator<<(ostream& os, const Sparse_table& st) {
rep(j, st.m) {
rep(i, st.n) os << st.acc[j][i] << " ";
os << "\n";
}
return os;
}
#endif
};
ll WA(int n, vl x, vi a) {
vector<pil> ax(n);
rep(i, n) ax[i] = { a[i], x[i] };
sort(all(ax));
rep(i, n) tie(a[i], x[i]) = ax[i];
dump(a); dump(x);
Wavelet_matrix X(x);
vi acc(n + 1);
rep(i, n) acc[i + 1] = acc[i] ^ a[i];
vl dp(n + 1, INFL);
dp[0] = 0;
repi(r, 1, n) {
rep(l, r) {
ll med = X.get(l, r, (r - l) / 2);
ll sc = dp[l] + X.abs_sum(l, r, med) + (acc[r] ^ acc[l]);
dump(l, r, sc);
chmin(dp[r], sc);
}
}
return dp[n];
}
ll WA2(int n, vl x, vi a) {
vector<pil> ax(n);
rep(i, n) ax[i] = { a[i], x[i] };
sort(all(ax));
rep(i, n) tie(a[i], x[i]) = ax[i];
dump(a); dump(x);
Sparse_table X_min(x), X_max(x, 0);
vi A(n + 1);
rep(i, n) A[i + 1] = A[i] ^ a[i];
vl dp(n + 1, INFL);
dp[0] = 0;
repi(r, 1, n) {
rep(l, r) {
ll sc = dp[l] + (X_max.get(l, r) - X_min.get(l, r)) + (A[r] ^ A[l]);
dump(l, r, sc);
chmin(dp[r], sc);
}
}
return dp[n];
}
//O(BellB(n))n=12
/*
* [0..n)
* [0..6) 1 {{0, 1, 4}, {2, 5}, {3}}
*/
vvvi set_partitions(int n) {
// verify : https://yukicoder.me/problems/no/1561
vvvi sps; vvi sp;
function<void(int)> rf = [&](int x) {
//
if (x == n) {
sps.push_back(sp);
return;
}
// x
rep(i, sz(sp)) {
sp[i].push_back(x);
rf(x + 1);
sp[i].pop_back();
}
// x
sp.push_back(vi{ x });
rf(x + 1);
sp.pop_back();
return;
};
rf(0);
return sps;
}
ll naive(int n, vl x, vi a) {
auto sps = set_partitions(n);
ll res = INFL;
repe(sp, sps) {
ll cost = 0;
repe(s, sp) {
ll x_min = INFL;
ll x_max = -INFL;
int a_xor = 0;
repe(i, s) {
chmin(x_min, x[i]);
chmax(x_max, x[i]);
a_xor ^= a[i];
}
cost += (x_max - x_min) + a_xor;
}
if (chmin(res, cost)) {
dump(sp);
}
}
return res;
}
ll solve(int n, vl x, vi a) {
vector<pli> xa(n);
rep(i, n) xa[i] = { x[i], a[i] };
sort(all(xa));
rep(i, n) tie(x[i], a[i]) = xa[i];
dump(a); dump(x);
Sparse_table X_min(x), X_max(x, 0);
vi A(n + 1);
rep(i, n) A[i + 1] = A[i] ^ a[i];
vl dp(n + 1, INFL);
dp[0] = 0;
repi(r, 1, n) {
rep(l, r) {
ll sc = dp[l] + (X_max.get(l, r) - X_min.get(l, r)) + (A[r] ^ A[l]);
dump(l, r, sc);
chmin(dp[r], sc);
}
}
return dp[n];
}
void bug_find() {
#ifdef _MSC_VER
//
mute_dump = true;
mt19937_64 mt;
mt.seed((int)time(NULL));
uniform_int_distribution<ll> rnd(0LL, 1LL << 60);
rep(hoge, 100) {
int n = rnd(mt) % 10 + 1;
vi a(n); vl x(n);
rep(i, n) a[i] = rnd(mt) % 7 + 1;
rep(i, n) x[i] = rnd(mt) % 7 + 1;
sort(all(a));
auto res_naive = naive(n, x, a);
auto res_solve = solve(n, x, a);
if (res_naive != res_solve) {
cout << "----------error!----------" << endl;
cout << "input:" << endl;
cout << n << endl;
cout << x << endl;
cout << a << endl;
cout << "results:" << endl;
cout << res_naive << endl;
cout << res_solve << endl;
cout << "--------------------------" << endl;
}
}
mute_dump = false;
exit(0);
#endif
}
/*
----------error!----------
input:
4
6 2 5 7
1 2 4 5
results:
4
6
0 2 3 1
4
--------------------------
*/
void zikken() {
mt19937_64 mt;
mt.seed((int)time(NULL));
uniform_int_distribution<ll> rnd(0LL, 1LL << 60);
int n = 10;
vi a(n); vl x(n);
rep(i, n) a[i] = rnd(mt) % 7 + 1;
rep(i, n) x[i] = rnd(mt) % 7 + 1;
sort(all(a));
dump(x); dump(a); dump("----");
cout << naive(n, x, a) << endl;
exit(0);
}
/*
2 6 4 3 7 7 7 7 5 5
2 2 2 2 2 5 5 6 6 7
----
0 3 1 2 8 9 4 5 6 7
8
*/
void zikken2() {
mt19937_64 mt;
mt.seed((int)time(NULL));
uniform_int_distribution<ll> rnd(0LL, 1LL << 60);
int n = 10;
vi a(n); vl x(n);
rep(i, n) a[i] = rnd(mt) % 7 + 1;
rep(i, n) x[i] = rnd(mt) % 7 + 1;
sort(all(x));
dump(x); dump(a); dump("----");
cout << naive(n, x, a) << endl;
exit(0);
}
int main() {
// input_from_file("input.txt");
// output_to_file("output.txt");
bug_find();
// zikken2();
int n;
cin >> n;
vl x(n); vi a(n);
cin >> x >> a;
dump(naive(n, x, a)); dump("-----");
cout << solve(n, x, a) << endl;
}
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