結果
| 問題 |
No.130 XOR Minimax
|
| コンテスト | |
| ユーザー |
tempura_pp
|
| 提出日時 | 2018-10-16 01:42:38 |
| 言語 | C++11(廃止可能性あり) (gcc 13.3.0) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 3,786 bytes |
| コンパイル時間 | 972 ms |
| コンパイル使用メモリ | 89,856 KB |
| 実行使用メモリ | 51,200 KB |
| 最終ジャッジ日時 | 2024-10-12 18:39:04 |
| 合計ジャッジ時間 | 3,829 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 2 WA * 19 |
ソースコード
#include<iostream>
#include<string>
#include<algorithm>
#include<vector>
#include<iomanip>
#include<math.h>
#include<complex>
#include<queue>
#include<deque>
#include<stack>
#include<map>
#include<set>
#include<bitset>
#include<functional>
using namespace std;
#define REP(i,m,n) for(int i=(int)m ; i < (int) n ; ++i )
#define rep(i,n) REP(i,0,n)
typedef long long ll;
typedef pair<int,int> pint;
typedef pair<ll,int> pli;
const int inf=1e9+7;
const ll longinf=1LL<<60 ;
const ll mod=1e9+7 ;
template<typename T = unsigned int, int B=32>
struct BinaryTrie{
private:
struct Node{
int cnt;
T lazy;
Node *ch[2]={};
Node():cnt(0),lazy(0){}
};
Node* root;
int size(Node *t){return t?t->cnt:0 ;}
void eval(Node* t,int bit_index){
if(!t->lazy)return;
if(t->lazy>>bit_index)swap(t->ch[0],t->ch[1]);
if(t->ch[0])t->ch[0]->lazy^=t->lazy;
if(t->ch[1])t->ch[1]->lazy^=t->lazy;
t->lazy = 0;
}
Node* insert(Node* t,T n,int bit_index){
if(!t)t=new Node;
t->cnt+=1;
if(bit_index==-1)return t;
eval(t,bit_index);
bool c=(n>>bit_index)&1;
t->ch[c]=insert(t->ch[c],n,bit_index-1);
return t;
}
Node* erase(Node* t,T n,int bit_index){
//assert(t);
t->cnt-=1;
if(!t->cnt)return nullptr;
if(bit_index==-1)return t;
eval(t,bit_index);
bool c=(n>>bit_index)&1;
t->ch[c]=erase(t->ch[c],n,bit_index-1);
return t;
}
T get_min(Node* t,T n,int bit_index){
//assert(t);
if(bit_index<0)return 0;
eval(t,bit_index);
bool c=(n>>bit_index)&1;
T ret=0;
if(!t->ch[c])c^=1;
return get_min(t->ch[c],n,bit_index-1)|((T)c<<bit_index);
}
T get(Node* t,T n,int k,int bit_index){
//assert(t&&t->cnt<=k);
if(bit_index<0)return 0;
eval(t,bit_index);
bool c=(n>>bit_index)&1;
if(size(t->ch[c])<k)k-=size(t->ch[c]),c^=1;
return get(t->ch[c],n,k,bit_index-1)|((T)c<<bit_index);
}
int count_lower(Node* t,T n,T val,int bit_index){
if(!t||bit_index<0)return 0;
eval(t,bit_index);
bool c=(n>>bit_index)&1;
int ret=0;
if((val>>bit_index)&1)ret+=size(t->ch[c]),c^=1;
return ret+count_lower(t->ch[c],n,val,bit_index-1);
}
int calc(Node* t,int bit_index){
if(!t||bit_index<0)return 0;
if(size(t->ch[0])==0)return calc(t->ch[1],bit_index-1);
if(size(t->ch[1])==0)return calc(t->ch[0],bit_index-1);
return 1LL<<bit_index+min(calc(t->ch[0],bit_index-1),calc(t->ch[0],bit_index-1));
}
public:
BinaryTrie():root(nullptr){}
int size(){
return size(root);
}
bool empty(){
return !root;
}
void insert(T n){
root=insert(root,n,B-1);
}
void erase(T n){
root=erase(root,n,B-1);
}
void xor_all(T n){
if(root) root->lazy^=n;
}
T max_element(T bias = 0){
return get_min(root,~bias,B-1);
}
T min_element(T bias = 0){
return get_min(root,bias,B-1);
}
int lower_bound(T x,T bias = 0){
return count_lower(root,bias,x,B-1);
}
int upper_bound(T x,T bias = 0){
return count_lower(root,bias,x+1,B-1);
}
int count(T x){
return upper_bound(x)-lower_bound(x);
}
T get(int k,T bias = 0){
//assert(0<=k&&k<size());
return get(root,bias,k+1,B-1);
}
T operator[](int k){
return get(k);
}
T calc(){
return calc(root,B-1);
}
};
int main(){
int n;cin>>n;
BinaryTrie<> bt;
rep(i,n){
int x;cin>>x;
bt.insert(x);
}
cout<<bt.calc()<<endl;
}
tempura_pp