Submission #60417

#	Time	Username	Problem	Language	Result	Execution time	Memory
60417		Tenuun	Money (IZhO17_money)	C++17	9 / 100	7 ms	4512 KiB

money

#include<bits/stdc++.h>
 
using namespace std;
 
int tr[1000001];
 
void update(int ind, int val){
	while(ind<=1000000){
		tr[ind]+=val;
		ind+=ind&-ind;
	}
}
 
int get(int ind){
	int ans=0;
	while(ind){
		ans+=tr[ind];
		ind-=ind&-ind;
	}
	return ans;
}
 
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	memset(tr, 0, sizeof tr);
	int n, last=0, res=1, x, start=0, cnt=1;
	cin >> n;
	for(int i=0; i<n; i++){
		cin >> x;
		if(x<last || (abs(x-start)>1 && get(x-1)-get(start)>cnt-1)) {
			res++;
			start=x;
			cnt=1;
			//cout << i << " ";
		}
		else cnt++;
		last=x;
		update(x, 1);
	}
	cout << res;
	return 0;
}

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