Submission #417858

#	Time	Username	Problem	Language	Result	Execution time	Memory
417858		codebuster_10	Secret (JOI14_secret)	C++17	100 / 100	519 ms	4456 KiB

secret

#include "secret.h"
 
#include <bits/stdc++.h>
 
using namespace std ;
 
//#define int int64_t //be careful about this 
#define endl "\n"
#define f(i,a,b) for(int i=int(a);i<int(b);++i)
 
#define pr pair
#define ar array
#define fr first
#define sc second
#define vt vector
#define pb push_back
#define eb emplace_back
#define LB lower_bound  
#define UB upper_bound
#define PQ priority_queue
 
#define sz(x) ((int)(x).size())
#define all(a) (a).begin(),(a).end()
#define allr(a) (a).rbegin(),(a).rend()
#define mem0(a) memset(a, 0, sizeof(a))
#define mem1(a) memset(a, -1, sizeof(a))
 
template<class A> void rd(vt<A>& v);
template<class T> void rd(T& x){ cin >> x; }
template<class H, class... T> void rd(H& h, T&... t) { rd(h) ; rd(t...) ;}
template<class A> void rd(vt<A>& x) { for(auto& a : x) rd(a) ;}
 
template<class T> bool ckmin(T& a, const T& b) { return b < a ? a = b, 1 : 0; }
template<class T> bool ckmax(T& a, const T& b) { return a < b ? a = b, 1 : 0; }
 
template<typename T>
void __p(T a) {
  cout<<a; 
}
template<typename T, typename F>
void __p(pair<T, F> a) {
  cout<<"{";
  __p(a.first);
  cout<<",";
  __p(a.second);
  cout<<"}\n"; 
}
template<typename T>
void __p(std::vector<T> a) {
  cout<<"{";
  for(auto it=a.begin(); it<a.end(); it++)
    __p(*it),cout<<",}\n"[it+1==a.end()]; 
}
template<typename T, typename ...Arg>
void __p(T a1, Arg ...a) {
  __p(a1);
  __p(a...);
}
template<typename Arg1>
void __f(const char *name, Arg1 &&arg1) {
  cout<<name<<" : ";
  __p(arg1);
  cout<<endl;
}
template<typename Arg1, typename ... Args>
void __f(const char *names, Arg1 &&arg1, Args &&... args) {
  int bracket=0,i=0;
  for(;; i++)
    if(names[i]==','&&bracket==0)
      break;
    else if(names[i]=='(')
      bracket++;
    else if(names[i]==')')
      bracket--;
  const char *comma=names+i;
  cout.write(names,comma-names)<<" : ";
  __p(arg1);
  cout<<" | ";
  __f(comma+1,args...);
}
 
void setIO(string s = "") {
  ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); 
  cin.exceptions(cin.failbit); 
	cout.precision(15);	cout << fixed;
  #ifdef ONLINE_JUDGE
  if(sz(s)){
  	freopen((s+".in").c_str(),"r",stdin);
  	freopen((s+".out").c_str(),"w",stdout);
  }
  #define __f(...) 0
  #endif
}
 
 
/**
 * Description: Range queries for any associative operation on static array
 * If you get TLE, try declaring everything globally.
 * Time: O(n log n) build, O(1) query
 * Source: Benq
 * Verification: https://www.codechef.com/viewsolution/47401581
 */ 
 
template<class T> struct static_range_query {
	int N;
	const T ID = -1;
	vector<vector<T>> store; // comb(ID,x) = x.
	vector<T> a;
	T comb (T a, T b) { // associative operation.
		if(a == ID) return b;
		if(b == ID) return a;
		else return Secret(a,b);
	} 
	void fill(int l, int r, int ind) {
		if (ind < 1) return;
		int m = (l+r)/2 ;
		T val = ID; 
		for(int i = m-1; i >= l; --i){
			store[i][ind] = val = comb(a[i],val);
		}
		val = ID; 
		for(int i = m; i < r; ++i){
			store[i][ind] = val = comb(val,a[i]);
		}
		fill(l,m,ind-1); 
		fill(m,r,ind-1);
	}
	void init(const vector<T> _a) {
		a = _a;
		for(N = 1; (1<<N) < int(a.size()); ++N);
		store = vector<vector<int>> (1<<N,vector<int>(N,ID));
		while(sz(a) < (1<<N)) a.pb(ID);
		fill(0,(1<<N),N-1);
	}
	T query(int l, int r) {
		if(l + 1 == r) return comb(a[l],a[r]);
		if (l == r) return a[l];
		int level = 31 - __builtin_clz(r^l);
		return comb(store[l][level], store[r][level]);
	}
};
 
static_range_query<int> srq;
 
vt<int> a;
 
void Init(int n,int b[]){
	f(i,0,n) a.pb(b[i]);
	srq.init(a);
	return;
}
 
int Query(int L, int R){
	return srq.query(L,R);
}

• Subtask 1: 100 / 100