結果
問題 | No.2977 Kth Xor Pair |
ユーザー | siro53 |
提出日時 | 2024-12-01 00:32:56 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 12,692 bytes |
コンパイル時間 | 2,525 ms |
コンパイル使用メモリ | 208,716 KB |
実行使用メモリ | 87,936 KB |
最終ジャッジ日時 | 2024-12-01 00:34:08 |
合計ジャッジ時間 | 64,826 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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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
6,816 KB |
testcase_01 | AC | 2 ms
6,816 KB |
testcase_02 | AC | 4 ms
6,820 KB |
testcase_03 | AC | 4 ms
6,816 KB |
testcase_04 | AC | 4 ms
6,816 KB |
testcase_05 | AC | 5 ms
6,820 KB |
testcase_06 | AC | 5 ms
6,816 KB |
testcase_07 | AC | 1,377 ms
53,376 KB |
testcase_08 | TLE | - |
testcase_09 | AC | 2,728 ms
79,872 KB |
testcase_10 | AC | 2,737 ms
81,280 KB |
testcase_11 | AC | 2,879 ms
83,072 KB |
testcase_12 | AC | 2,730 ms
81,280 KB |
testcase_13 | TLE | - |
testcase_14 | AC | 1,418 ms
52,480 KB |
testcase_15 | AC | 2,490 ms
75,904 KB |
testcase_16 | TLE | - |
testcase_17 | TLE | - |
testcase_18 | TLE | - |
testcase_19 | TLE | - |
testcase_20 | TLE | - |
testcase_21 | TLE | - |
testcase_22 | TLE | - |
testcase_23 | TLE | - |
testcase_24 | TLE | - |
testcase_25 | TLE | - |
testcase_26 | TLE | - |
testcase_27 | AC | 692 ms
7,936 KB |
testcase_28 | AC | 286 ms
8,064 KB |
testcase_29 | AC | 344 ms
7,936 KB |
testcase_30 | AC | 531 ms
7,936 KB |
testcase_31 | AC | 511 ms
8,064 KB |
testcase_32 | AC | 205 ms
6,820 KB |
testcase_33 | AC | 215 ms
6,820 KB |
testcase_34 | AC | 215 ms
6,816 KB |
testcase_35 | AC | 218 ms
6,816 KB |
ソースコード
#pragma region Macros #include <bits/stdc++.h> using namespace std; // input output utils namespace siro53_io { // https://maspypy.github.io/library/other/io_old.hpp struct has_val_impl { template <class T> static auto check(T &&x) -> decltype(x.val(), std::true_type{}); template <class T> static auto check(...) -> std::false_type; }; template <class T> class has_val : public decltype(has_val_impl::check<T>(std::declval<T>())) { }; // debug template <class T, enable_if_t<is_integral<T>::value, int> = 0> void dump(const T t) { cerr << t; } template <class T, enable_if_t<is_floating_point<T>::value, int> = 0> void dump(const T t) { cerr << t; } template <class T, typename enable_if<has_val<T>::value>::type * = nullptr> void dump(const T &t) { cerr << t.val(); } void dump(__int128_t n) { if(n == 0) { cerr << '0'; return; } else if(n < 0) { cerr << '-'; n = -n; } string s; while(n > 0) { s += (char)('0' + n % 10); n /= 10; } reverse(s.begin(), s.end()); cerr << s; } void dump(const string &s) { cerr << s; } void dump(const char *s) { int n = (int)strlen(s); for(int i = 0; i < n; i++) cerr << s[i]; } template <class T1, class T2> void dump(const pair<T1, T2> &p) { cerr << '('; dump(p.first); cerr << ','; dump(p.second); cerr << ')'; } template <class T> void dump(const vector<T> &v) { cerr << '{'; for(int i = 0; i < (int)v.size(); i++) { dump(v[i]); if(i < (int)v.size() - 1) cerr << ','; } cerr << '}'; } template <class T> void dump(const set<T> &s) { cerr << '{'; for(auto it = s.begin(); it != s.end(); it++) { dump(*it); if(next(it) != s.end()) cerr << ','; } cerr << '}'; } template <class Key, class Value> void dump(const map<Key, Value> &mp) { cerr << '{'; for(auto it = mp.begin(); it != mp.end(); it++) { dump(*it); if(next(it) != mp.end()) cerr << ','; } cerr << '}'; } template <class Key, class Value> void dump(const unordered_map<Key, Value> &mp) { cerr << '{'; for(auto it = mp.begin(); it != mp.end(); it++) { dump(*it); if(next(it) != mp.end()) cerr << ','; } cerr << '}'; } template <class T> void dump(const deque<T> &v) { cerr << '{'; for(int i = 0; i < (int)v.size(); i++) { dump(v[i]); if(i < (int)v.size() - 1) cerr << ','; } cerr << '}'; } template <class T> void dump(queue<T> q) { cerr << '{'; while(!q.empty()) { dump(q.front()); if((int)q.size() > 1) cerr << ','; q.pop(); } cerr << '}'; } void debug_print() { cerr << endl; } template <class Head, class... Tail> void debug_print(const Head &h, const Tail &...t) { dump(h); if(sizeof...(Tail)) dump(' '); debug_print(t...); } // print template <class T, enable_if_t<is_integral<T>::value, int> = 0> void print_single(const T t) { cout << t; } template <class T, enable_if_t<is_floating_point<T>::value, int> = 0> void print_single(const T t) { cout << t; } template <class T, typename enable_if<has_val<T>::value>::type * = nullptr> void print_single(const T t) { cout << t.val(); } void print_single(__int128_t n) { if(n == 0) { cout << '0'; return; } else if(n < 0) { cout << '-'; n = -n; } string s; while(n > 0) { s += (char)('0' + n % 10); n /= 10; } reverse(s.begin(), s.end()); cout << s; } void print_single(const string &s) { cout << s; } void print_single(const char *s) { int n = (int)strlen(s); for(int i = 0; i < n; i++) cout << s[i]; } template <class T1, class T2> void print_single(const pair<T1, T2> &p) { print_single(p.first); cout << ' '; print_single(p.second); } template <class T> void print_single(const vector<T> &v) { for(int i = 0; i < (int)v.size(); i++) { print_single(v[i]); if(i < (int)v.size() - 1) cout << ' '; } } template <class T> void print_single(const set<T> &s) { for(auto it = s.begin(); it != s.end(); it++) { print_single(*it); if(next(it) != s.end()) cout << ' '; } } template <class T> void print_single(const deque<T> &v) { for(int i = 0; i < (int)v.size(); i++) { print_single(v[i]); if(i < (int)v.size() - 1) cout << ' '; } } template <class T> void print_single(queue<T> q) { while(!q.empty()) { print_single(q.front()); if((int)q.size() > 1) cout << ' '; q.pop(); } } void print() { cout << '\n'; } template <class Head, class... Tail> void print(const Head &h, const Tail &...t) { print_single(h); if(sizeof...(Tail)) print_single(' '); print(t...); } // input template <class T, enable_if_t<is_integral<T>::value, int> = 0> void input_single(T &t) { cin >> t; } template <class T, enable_if_t<is_floating_point<T>::value, int> = 0> void input_single(T &t) { cin >> t; } template <class T, typename enable_if<has_val<T>::value>::type * = nullptr> void input_single(T &t) { cin >> t; } void input_single(__int128_t &n) { string s; cin >> s; if(s == "0") { n = 0; return; } bool is_minus = false; if(s[0] == '-') { s = s.substr(1); is_minus = true; } n = 0; for(int i = 0; i < (int)s.size(); i++) n = n * 10 + (int)(s[i] - '0'); if(is_minus) n = -n; } void input_single(string &s) { cin >> s; } template <class T1, class T2> void input_single(pair<T1, T2> &p) { input_single(p.first); input_single(p.second); } template <class T> void input_single(vector<T> &v) { for(auto &e : v) input_single(e); } void input() {} template <class Head, class... Tail> void input(Head &h, Tail &...t) { input_single(h); input(t...); } }; // namespace siro53_io #ifdef DEBUG #define debug(...) \ cerr << __LINE__ << " [" << #__VA_ARGS__ << "]: ", debug_print(__VA_ARGS__) #else #define debug(...) (void(0)) #endif // io setup struct Setup { Setup() { cin.tie(0); ios::sync_with_stdio(false); cout << fixed << setprecision(15); } } __Setup; using namespace siro53_io; // types using ll = long long; using i128 = __int128_t; // input macros #define INT(...) \ int __VA_ARGS__; \ input(__VA_ARGS__) #define LL(...) \ ll __VA_ARGS__; \ input(__VA_ARGS__) #define STRING(...) \ string __VA_ARGS__; \ input(__VA_ARGS__) #define CHAR(...) \ char __VA_ARGS__; \ input(__VA_ARGS__) #define DBL(...) \ double __VA_ARGS__; \ input(__VA_ARGS__) #define LD(...) \ long double __VA_ARGS__; \ input(__VA_ARGS__) #define UINT(...) \ unsigned int __VA_ARGS__; \ input(__VA_ARGS__) #define ULL(...) \ unsigned long long __VA_ARGS__; \ input(__VA_ARGS__) #define VEC(name, type, len) \ vector<type> name(len); \ input(name); #define VEC2(name, type, len1, len2) \ vector name(len1, vector<type>(len2)); \ input(name); // other macros // https://trap.jp/post/1224/ #define OVERLOAD3(_1, _2, _3, name, ...) name #define ALL(v) (v).begin(), (v).end() #define RALL(v) (v).rbegin(), (v).rend() #define REP1(i, n) for(int i = 0; i < int(n); i++) #define REP2(i, a, b) for(int i = (a); i < int(b); i++) #define REP(...) OVERLOAD3(__VA_ARGS__, REP2, REP1)(__VA_ARGS__) #define SORT(v) sort(ALL(v)) #define RSORT(v) sort(RALL(v)) #define UNIQUE(v) \ sort(ALL(v)), (v).erase(unique(ALL(v)), (v).end()), v.shrink_to_fit() #define REV(v) reverse(ALL(v)) #define SZ(v) ((int)(v).size()) #define MIN(v) (*min_element(ALL(v))) #define MAX(v) (*max_element(ALL(v))) // util const const int INF = 1 << 30; const ll LLINF = 1LL << 60; constexpr int MOD = 1000000007; constexpr int MOD2 = 998244353; const int dx[4] = {1, 0, -1, 0}; const int dy[4] = {0, 1, 0, -1}; // util functions void Case(int i) { cout << "Case #" << i << ": "; } int popcnt(int x) { return __builtin_popcount(x); } int popcnt(ll x) { return __builtin_popcountll(x); } template <class T> inline bool chmax(T &a, T b) { return (a < b ? a = b, true : false); } template <class T> inline bool chmin(T &a, T b) { return (a > b ? a = b, true : false); } template <class T, int dim> auto make_vector_impl(vector<int>& sizes, const T &e) { if constexpr(dim == 1) { return vector(sizes[0], e); } else { int n = sizes[dim - 1]; sizes.pop_back(); return vector(n, make_vector_impl<T, dim - 1>(sizes, e)); } } template <class T, int dim> auto make_vector(const int (&sizes)[dim], const T &e = T()) { vector<int> s(dim); for(int i = 0; i < dim; i++) s[i] = sizes[dim - i - 1]; return make_vector_impl<T, dim>(s, e); } vector<int> iota_gen(int n, int start = 0) { vector<int> ord(n); iota(ord.begin(), ord.end(), start); return ord; } template<typename T> vector<int> ord_sort(const vector<T>& v, bool greater = false) { auto ord = iota_gen((int)v.size()); sort(ALL(ord), [&](int i, int j) { if(greater) return v[i] > v[j]; return v[i] < v[j]; }); return ord; } #pragma endregion Macros struct Node { ll cnt; array<Node*, 2> ch; Node(): cnt(0), ch({nullptr, nullptr}) {} }; int main() { INT(N); LL(K); VEC(A, int, N); const int LOG = 30; Node* root = new Node(); auto ins = [&](int val) -> void { Node* now = root; now->cnt++; for(int i = LOG - 1; i >= 0; i--) { int b = val >> i & 1; Node *nxt = now->ch[b]; if(!nxt) { nxt = new Node(); now->ch[b] = nxt; } now = nxt; now->cnt++; } }; REP(i, N) ins(A[i]); auto check = [&](int x) -> bool { ll sum = 0; REP(i, N) { Node* now = root; for(int k = LOG - 1; k >= 0; k--) { if(!now) break; int xbit = x >> k & 1; int abit = A[i] >> k & 1; if(xbit) { sum += (now->ch[abit] ? now->ch[abit]->cnt : 0); now = now->ch[abit ^ 1]; } else { // sum += (now->ch[0] ? now->ch[0]->cnt : 0); now = now->ch[abit]; } } if(now) sum += now->cnt; } debug(x, sum); return sum >= K * 2 + N; }; int ok = (1 << LOG) - 1, ng = -1; while(ok - ng > 1) { int mid = (ok + ng) / 2; (check(mid) ? ok : ng) = mid; } print(ok); }