제출 #88151

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
88151		Scayre	Money (IZhO17_money)	C++14	100 / 100	784 ms	164836 KiB

money

///////////////////////////
//         INFO          //
//                       //
//    Handle -> Scayre   //
//                       //
//   Template vers. 1.1  //
//                       //
//   It'll be accepted   //
//                       //
///////////////////////////

//████╗████████╗██╗███████╗══███╗═══███╗████████╗════//
//═██╔╝═══██╔══╝╚█║██╔════╝══████╗═████║██╔═════╝═══//
//═██║════██║════╚╝███████╗══██╔████╔██║█████╗══════//
//═██║════██║══════╚════██║══██║╚██╔╝██║██╔══╝══════//
//████╗═══██║══════███████║══██║═╚═╝═██║███████╗═════//


#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

#include <map>
#include <set>
#include <list>
#include <cmath>
#include <ctime>
#include <deque>
#include <queue>
#include <stack>
#include <string>
#include <bitset>
#include <cstdio>
#include <limits>
#include <complex>
#include <vector>
#include <climits>
#include <cstring>
#include <cstdlib>
#include <fstream>
#include <numeric>
#include <sstream>
#include <cassert>
#include <iomanip>
#include <iostream>
#include <algorithm>

#define ll long long
#define ld long double
#define ull unsigned ll
#define ioi exit(0);

#define f first
#define s second

#define inf (int)1e9 + 7

#define NFS ios_base :: sync_with_stdio(0), cin.tie(0), cout.tie(0);

#define mp(x,y) make_pair(x,y)

#define lb(x) lower_bound(x)
#define ub(x) upper_bound(x)

#define pb push_back
#define ppb pop_back

#define bitcoin __builtin_popcount

#define endl "\n"

#define in(x) insert(x)

#define sz(x) (int)x.size()

#define all(x) x.begin(),x.end()

#define pw2(x) (1<<x) //2^x

#define forit(it,v) for (typeof(v.begin()) it = v.begin(); it != v.end(); ++it)

#define sqr(x) ((x) * 1ll * (x))

#define UpdateRandom srand (time(NULL));

using namespace std;

const int N = (int)1e6 + 7, MOD = (int)1e9 + 7;

int n,m;

int a[N];

int ans;

ll t[N*4];

void add(int v,int l,int r,int pos){
	if(l==r){
		t[v]++;
		return;
	}
	int md=(l+r)/2;
	if(md>=pos)add(v+v,l,md,pos);
	else add(v+v+1,md+1,r,pos);
	t[v]=t[v+v]+t[v+v+1];
}

ll get(int v,int l,int r,int L,int R){
	if(R<L){
		return 0;
	}
	if(L>r || R<l){
		return 0;
	}
	if(L<=l && R>=r){
		return t[v];
	}
	int md=(l+r)/2;
	return get(v+v,l,md,L,R)+get(v+v+1,md+1,r,L,R);
}

int main(){

	#ifdef IOI2019
		freopen ("in.txt", "r", stdin);
	#endif

	NFS

	cin >> n;

	for(int i=1;i<=n;i++){
		cin >> a[i];
	}

	for(int i=1;i<=n;i++){
		int l=i,r=i;
		for(int j=i+1;j<=n;j++){
			if(a[r]<=a[j] && get(1,1,1e6,a[l]+1,a[j]-1)==0){
				r=j;
			}
			else break;
		}
		for(int j=l;j<=r;j++){
			add(1,1,1e6,a[j]);
		}
		i=r;
		ans++;
	}

	cout << ans << endl;

	#ifdef IOI2019
		cout << "\nTime Elapsed : " << clock () * 1.0 / CLOCKS_PER_SEC << endl;
	#endif

	ioi
}

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