Submission #52398

#	Time	Username	Problem	Language	Result	Execution time	Memory
52398		MatheusLealV	Money (IZhO17_money)	C++17	100 / 100	203 ms	152340 KiB

money

#include <bits/stdc++.h>
#define N 1000050
using namespace std;

int bit[N], v[N], n, ans;

void upd(int x, int v)
{
	x += 2;

	for(int i = x; i < N; i += (i&-i)) bit[i] += v;
}

int query(int x)
{
	x += 2;

	int sum = 0;

	for(int i = x; i > 0; i -= (i&-i)) sum += bit[i];

	return sum;
}

int main()
{
	ios::sync_with_stdio(false); cin.tie(0);

	cin>>n;

	for(int i = 1; i <= n; i++) cin>>v[i];

	for(int i = 1; i <= n; i++)
	{
		int st = i, ant = v[i];

		ans ++;

		while(i <= n and v[i] >= ant)
		{
			int A = min(v[i], v[st] - 1), B = max(v[i], v[st] - 1);

			A ++, B --;

			if(A <= B and query(B) - query(A)) break;

			ant = v[i];

			i ++;
		}

		for(int j = st; j < i; j++) upd(v[j], 1);

		i --;
	}

	cout<<ans<<"\n";
}

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