Submission #691781

#	Time	Username	Problem	Language	Result	Execution time	Memory
691781		tolbi	Money (IZhO17_money)	C++17	100 / 100	1439 ms	61888 KiB

money

#pragma optimize("Bismillahirrahmanirrahim")
//█▀█─█──█──█▀█─█─█
//█▄█─█──█──█▄█─█■█
//█─█─█▄─█▄─█─█─█─█
//Allahuekber
//ahmet23 orz...
//Sani buyuk Osman Pasa Plevneden cikmam diyor.
//FatihSultanMehmedHan
//YavuzSultanSelimHan
//AbdulhamidHan
#define author tolbi
#include <bits/stdc++.h>
#ifdef LOCAL
	#include "23.h"
#endif
#define endl '\n'
#define vint(x) vector<int> x
#define deci(x) int x;cin>>x;
#define decstr(x) string x;cin>>x;
#define cinarr(x) for (auto &it : x) cin>>it;
#define coutarr(x) for (auto &it : x) cout<<it<<" ";cout<<endl;
#define sortarr(x) sort(x.begin(),x.end())
#define sortrarr(x) sort(x.rbegin(),x.rend())
#define det(x) cout<<"NO\0YES"+x*3<<endl;
#define INF LONG_LONG_MAX
#define rev(x) reverse(x.begin(),x.end());
#define ios ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define tol(bi) (1LL<<((int)(bi)))
const int MOD = 1e9+7;
using namespace std;
mt19937 ayahya(chrono::high_resolution_clock().now().time_since_epoch().count());
struct BIT{
	vector<int> fenwik;
	BIT(int n){
		fenwik.resize(2*n);
	}
	void update(int node){
		for (; node<fenwik.size(); node=node|(node+1)) fenwik[node]++;
	}
	int get(int node){
		int rval = 0;
		for (; node>=0; node=(node&(node+1))-1) rval+=fenwik[node];
		return rval;
	}
	int query(int l, int r){
		int hh = 0;
		if (l) hh = get(l-1);
		if (l>r) return 0ll;
		return get(r)-hh;
	}
};
void compress(vector<int> &arr){
	vector<int> barr = arr;
	map<int,int> mp;
	sortarr(barr);
	int ind = 1;
	for (int i = 0; i < arr.size(); i++){
		if (mp[barr[i]]) continue;
		mp[barr[i]]=ind++;
	}
	for (int i = 0; i < arr.size(); ++i)
	{
		arr[i]=mp[arr[i]];
	}
}
int32_t main(){
	ios;
	int t=1;
	int tno = 0;
	if (!t) cin>>t;
	while (t-(tno++)){
		deci(n);
		vint(arr(n));
		cinarr(arr);
		compress(arr);
		BIT fenwik(n);
		int ans = n;
		fenwik.update(arr[0]);
		vector<int> barr=arr;
		int ind = 1;
		for (int i = 1; i < n; i++){
			if (arr[i]>=barr[i-1]){
				if (fenwik.query(arr[i-1]+1,arr[i]-1)==0){
					ans--;
					arr[i]=arr[i-1];
				}
				else {
					while (ind<=i){
						fenwik.update(barr[ind++]);
					}
				}
			}
			else {
				while (ind<=i){
					fenwik.update(barr[ind++]);
				}
			}
		}
		cout<<ans<<endl;
	}
}

Compilation message (stderr)

money.cpp:1: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    1 | #pragma optimize("Bismillahirrahmanirrahim")
      | 
money.cpp: In member function 'void BIT::update(int)':
money.cpp:38:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |   for (; node<fenwik.size(); node=node|(node+1)) fenwik[node]++;
      |          ~~~~^~~~~~~~~~~~~~
money.cpp: In function 'void compress(std::vector<int>&)':
money.cpp:57:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |  for (int i = 0; i < arr.size(); i++){
      |                  ~~^~~~~~~~~~~~
money.cpp:61:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |  for (int i = 0; i < arr.size(); ++i)
      |                  ~~^~~~~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 16 / 16
• Subtask 3: 20 / 20
• Subtask 4: 55 / 55