Submission #163762

#	Time	Username	Problem	Language	Result	Execution time	Memory
163762		MvC	Money (IZhO17_money)	C++11	0 / 100	31 ms	23800 KiB

money

#pragma GCC target("avx2")
#pragma GCC optimization("O3")
#pragma GCC optimization("unroll-loops")
#include <bits/stdc++.h>
#define rc(x) return cout<<x<<endl,0
#define pb push_back
#define mkp make_pair
#define in insert
#define er erase
#define fd find
#define fr first
#define sc second
typedef long long ll;
typedef long double ld;
const ll INF=0x3f3f3f3f3f3f3f3f;
const ll llinf=(1LL<<62);
const int inf=(1<<30);
const int nmax=1e6+50;
const int mod=1e9+7;
using namespace std;
int n,i,a[nmax],rs,id,j;
set<int>s;
set<int>::iterator it;
vector<int>vc[nmax];
int main()
{
	//freopen("sol.in","r",stdin);
	//freopen("sol.out","w",stdout);
	//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
	ios_base::sync_with_stdio(false);cin.tie(0);cerr.tie(0);cout.tie(0);
	cin>>n;
	for(i=1;i<=n;i++)
	{
		cin>>a[i];
		vc[a[i]].pb(i);
	}
	for(i=1;i<=1e6;i++)
	{
		if(vc[i].empty())continue;
		for(j=0;j<(int)vc[i].size();j++)
		{
			a[vc[i][j]]=++id;
		}
	}
	//for(i=1;i<=n;i++)cout<<a[i]<<" ";
	//cout<<endl;
	s.in(0),s.in(inf);
	for(i=1;i<=n;i++)
	{
		if(i==1)
		{
			s.in(a[i]);
			rs++;
			continue;
		}
		it=--s.upper_bound(a[i]);
		if((*it)!=a[i-1])rs++;
		s.in(a[i]);
	}
	cout<<rs<<endl;
	return 0;
}

Compilation message (stderr)

money.cpp:2:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization("O3")
 
money.cpp:3:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
 #pragma GCC optimization("unroll-loops")

• Subtask 1: 0 / 9
• Subtask 2: 0 / 16
• Subtask 3: 0 / 20
• Subtask 4: 0 / 55