oj.uz

Submission #593647

# Submission time Handle Problem Language Result Execution time Memory
593647 2022-07-11T13:13:18 Z yutabi Ancient Books (IOI17_books) C++14
0 / 100
 1 ms 468 KB 
#include "books.h"


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


#define pb push_back


typedef long long ll;


long long minimum_walk(std::vector<int> p, int s)
{
	int n=p.size();

	ll ans=0;

	int mex_low=0;
	int mex_high=n-1;

	vector <bool> v(1000007,0);

	int left_limit=0;
	int right_limit=n-1;

	for(int i=0;i<=s;i++)
	{
		ans+=abs(i-p[i]);

		v[p[i]]=1;

		while(v[mex_low]==1)
		{
			mex_low++;
		}

		if(mex_low>i)
		{
			if(i!=s)
				ans+=2;

			left_limit=i+1;
		}
	}

	v=vector <bool> (1000007,0);

	for(int i=n-1;i>=s;i--)
	{
		ans+=abs(i-p[i]);

		v[p[i]]=1;

		while(mex_high>=0 && v[mex_high]==1)
		{
			mex_high--;
		}

		if(mex_high<i)
		{
			if(i!=s)
				ans+=2;

			right_limit=i-1;
		}
	}

	ans-=abs(s-p[s]);

	int lptr=s;
	int rptr=s;

	v=vector <bool> (1000007,0);

	mex_low=s;
	mex_high=s;

	int mini=p[s];
	int maxi=p[s];

	v[p[s]]=1;

	while(lptr>=left_limit && rptr<=right_limit)
	{
		while(mini<lptr || rptr<maxi)
		{
			while(mini<lptr)
			{
				lptr--;

				v[p[lptr]]=1;

				mini=min(mini,p[lptr]);
				maxi=max(maxi,p[lptr]);
			}

			while(rptr<maxi)
			{
				rptr++;

				v[p[rptr]]=1;

				mini=min(mini,p[rptr]);
				maxi=max(maxi,p[rptr]);
			}
		}

		while(mex_low>=0 && v[mex_low]==1)
		{
			mex_low--;
		}

		while(v[mex_high]==1)
		{
			mex_high++;
		}

		if(lptr==left_limit && rptr==right_limit)
		{
			break;
		}

		ans+=2;

		mini--;
		maxi++;
	}

	/*if(left_limit>right_limit)
	{
		ans-=2;
	}*/
	
	return ans;
}

Subtask #1
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 0 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Incorrect 0 ms 468 KB 3rd lines differ - on the 1st token, expected: '4', found: '6'
6 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 0 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Incorrect 0 ms 468 KB 3rd lines differ - on the 1st token, expected: '4', found: '6'
6 Halted 0 ms 0 KB -

Subtask #3
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 0 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Incorrect 0 ms 468 KB 3rd lines differ - on the 1st token, expected: '4', found: '6'
6 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Incorrect 1 ms 468 KB 3rd lines differ - on the 1st token, expected: '5920', found: '5922'
4 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 0 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Incorrect 0 ms 468 KB 3rd lines differ - on the 1st token, expected: '4', found: '6'
6 Halted 0 ms 0 KB -