結果
問題 | No.2977 Kth Xor Pair |
ユーザー | akiaa11 |
提出日時 | 2024-12-14 18:44:23 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 2,251 ms / 3,000 ms |
コード長 | 4,470 bytes |
コンパイル時間 | 6,860 ms |
コンパイル使用メモリ | 308,632 KB |
実行使用メモリ | 37,900 KB |
最終ジャッジ日時 | 2024-12-14 18:45:04 |
合計ジャッジ時間 | 39,629 ms |
ジャッジサーバーID (参考情報) |
judge1 / 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 | 5 ms
6,824 KB |
testcase_03 | AC | 5 ms
6,820 KB |
testcase_04 | AC | 6 ms
6,820 KB |
testcase_05 | AC | 5 ms
6,816 KB |
testcase_06 | AC | 6 ms
6,816 KB |
testcase_07 | AC | 549 ms
6,816 KB |
testcase_08 | AC | 1,184 ms
8,272 KB |
testcase_09 | AC | 925 ms
8,044 KB |
testcase_10 | AC | 913 ms
8,196 KB |
testcase_11 | AC | 954 ms
8,232 KB |
testcase_12 | AC | 938 ms
8,072 KB |
testcase_13 | AC | 1,069 ms
8,548 KB |
testcase_14 | AC | 585 ms
6,820 KB |
testcase_15 | AC | 861 ms
7,832 KB |
testcase_16 | AC | 1,076 ms
8,460 KB |
testcase_17 | AC | 1,099 ms
8,328 KB |
testcase_18 | AC | 1,070 ms
8,456 KB |
testcase_19 | AC | 1,108 ms
8,456 KB |
testcase_20 | AC | 1,099 ms
8,464 KB |
testcase_21 | AC | 1,033 ms
8,464 KB |
testcase_22 | AC | 2,237 ms
8,588 KB |
testcase_23 | AC | 2,234 ms
8,584 KB |
testcase_24 | AC | 2,224 ms
8,460 KB |
testcase_25 | AC | 1,004 ms
8,460 KB |
testcase_26 | AC | 2,251 ms
8,584 KB |
testcase_27 | AC | 631 ms
24,364 KB |
testcase_28 | AC | 337 ms
24,944 KB |
testcase_29 | AC | 394 ms
24,516 KB |
testcase_30 | AC | 561 ms
25,276 KB |
testcase_31 | AC | 537 ms
23,964 KB |
testcase_32 | AC | 420 ms
35,904 KB |
testcase_33 | AC | 431 ms
37,900 KB |
testcase_34 | AC | 397 ms
34,636 KB |
testcase_35 | AC | 382 ms
34,060 KB |
ソースコード
#include <bits/stdc++.h> #include <atcoder/all> #pragma GCC target("avx2") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #define SELECTER(_1,_2,_3,SELECT,...) SELECT #define rep1(i,n) for(int i=0;i<int(n);++i) #define rep2(i,a,n) for(int i=int(a);i<int(n);++i) #define rep(...) SELECTER(__VA_ARGS__,rep2,rep1)(__VA_ARGS__) #define RSELECTER(_1, _2, _3, RSELECT, ...) RSELECT #define rrep1(i,n) for(int i=(int)(n)-1;i>=0;--i) #define rrep2(i,a,n) for(int i=(int)(n)-1;i>=(int)a;--i) #define rrep(...) RSELECTER(__VA_ARGS__, rrep2, rrep1)(__VA_ARGS__) #define all(a) a.begin(),a.end() #define rall(a) a.rbegin(),a.rend() #define fi first #define se second #define PrintR LogOutput #ifdef _DEBUG #define Log(...) LogOutput(__VA_ARGS__) #else #define Log(...) #endif #define M_PI 3.14159265358979323846 using namespace std; using namespace atcoder; using ll=long long; using ld=long double; using pii=pair<int,int>; using pll=pair<long long,long long>; using pdd=pair<long double,long double>; using tp=tuple<int,int,int>; using tpll=tuple<ll,ll,ll>; using veci=vector<int>; using vecpii=vector<pair<int,int>>; using vecll=vector<long long>; using vecpll=vector<pair<long long,long long>>; using vecpdd=vector<pair<long double,long double>>; using vecs=vector<string>; using vecb=vector<bool>; using vecd=vector<long double>; using vectp=vector<tp>; using vectpll=vector<tpll>; using mint=modint998244353; using mint10=modint1000000007; template<typename T, typename S> istream& operator>>(istream& in, pair<T, S>& a){return in >> a.first >> a.second;} template<typename T, typename S> ostream& operator<<(ostream& out, const pair<T, S>& a){return out << a.first << ' ' << a.second;} ostream& operator<<(ostream& out, const mint& a){return out << a.val();} ostream& operator<<(ostream& out, const mint10& a){return out << a.val();} ostream& operator<<(ostream& out, const modint& a){return out << a.val();} template<typename T> ostream& operator<<(ostream& out, const vector<T>& d){for(int i = 0 ; i < d.size() ; ++i) out << d[i] << (i == d.size() - 1 ? "" : " "); return out;} template<typename T, typename S> pair<T, S> operator+(const pair<T, S>& a, const pair<T, S>& b){return {a.fi + b.fi, a.se + b.se};} template<typename T, typename S> pair<T, S> operator-(const pair<T, S>& a, const pair<T, S>& b){return {a.fi - b.fi, a.se - b.se};} template<class T> inline bool chmax(T& a,T b){if(a<b) {a=b;return true;} return false;} template<class T> inline bool chmin(T& a,T b){if(a>b) {a=b;return true;} return false;} bool Judge(int i, int j, int h, int w){return i < 0 || j < 0 || i >= h || j >= w;} bool PrintA(int i){cout<<(i ? "Yes" : "No")<<endl;return i;} constexpr ll INF=numeric_limits<ll>::max() >> 2; constexpr int inf=numeric_limits<int>::max() >> 1; constexpr ll MOD=998244353; const int vi[] = {0, 1, 0, -1}, vj[] = {1, 0, -1, 0}; template<typename... Args> void LogOutput(Args&&... args){ stringstream ss; ((ss << args << ' '), ...); cout << ss.str().substr(0, ss.str().length() - 1) << endl; } template<typename T> void LogOutput(vector<vector<T>>& data){for(auto d : data) LogOutput(d);} int main(){ ios::sync_with_stdio(false); std::cin.tie(nullptr); int n;cin>>n; ll k;cin>>k; veci a(n); rep(i, n) cin>>a[i]; ll bs, sa, sb, sc, sd, cnt; vector ls(32, vector<veci>(4)); auto rec = [&](auto f, int l, int r, int j, int u) -> void{ if(ls[j + 1][l].empty()) return; if(!u && ls[j + 1][r].empty()) return; if(j == -1){ if(u) cnt += ls[0][l].size() * (ll(ls[0][l].size()) - 1) / 2; else cnt += 1LL * ls[0][l].size() * ls[0][r].size(); return; } for(auto c : ls[j + 1][l]){ if(c >> j & 1) ls[j][0].push_back(c); else ls[j][1].push_back(c); } for(auto c : ls[j + 1][r]){ if(c >> j & 1) ls[j][2].push_back(c); else ls[j][3].push_back(c); } sa = ls[j][0].size(), sb = ls[j][1].size(), sc = ls[j][2].size(), sd = ls[j][3].size(); if(u){ if(bs >> j & 1){ cnt += sa * (sa - 1) / 2 + sb * (sb - 1) / 2; f(f, 0, 1, j - 1, 0); }else{ f(f, 0, 0, j - 1, 1); f(f, 1, 0, j - 1, 1); } }else{ if(bs >> j & 1){ cnt += sa * sc + sb * sd; f(f, 0, 3, j - 1, 0); f(f, 1, 2, j - 1, 0); }else{ f(f, 0, 2, j - 1, 0); f(f, 1, 3, j - 1, 0); } } rep(p, 4) ls[j][p].clear(); }; ls[31][0] = a; ll l = -1, r = 1LL << 31; while(r - l > 1){ bs = (l + r) / 2; cnt = 0; rec(rec, 0, 1, 30, 1); if(cnt >= k) r = bs; else l = bs; } cout<<r<<endl; }