Submission #593660

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
593660	2022-07-11T13:23:11 Z	yutabi	Ancient Books (IOI17_books)	C++14	100 / 100	132 ms	15200 KB

books

#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 start_l=0;
	int start_r=n-1;

	while(start_l<s && p[start_l]==start_l)
	{
		start_l++;
	}

	while(s<start_r && p[start_r]==start_r)
	{
		start_r--;
	}

	int mex_low=start_l;
	int mex_high=start_r;

	vector <bool> v(1000007,0);

	int left_limit=start_l;
	int right_limit=start_r;

	for(int i=start_l;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=start_r;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

12.0 / 12.0

#	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	Correct	1 ms	424 KB	Output is correct
4	Correct	1 ms	436 KB	Output is correct
5	Correct	1 ms	468 KB	Output is correct
6	Correct	1 ms	468 KB	Output is correct
7	Correct	1 ms	468 KB	Output is correct
8	Correct	1 ms	468 KB	Output is correct
9	Correct	1 ms	468 KB	Output is correct
10	Correct	1 ms	468 KB	Output is correct
11	Correct	1 ms	468 KB	Output is correct
12	Correct	1 ms	468 KB	Output is correct
13	Correct	1 ms	468 KB	Output is correct
14	Correct	1 ms	480 KB	Output is correct
15	Correct	1 ms	428 KB	Output is correct
16	Correct	1 ms	468 KB	Output is correct
17	Correct	1 ms	468 KB	Output is correct
18	Correct	1 ms	468 KB	Output is correct

Subtask #2

10.0 / 10.0

#	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	Correct	1 ms	424 KB	Output is correct
4	Correct	1 ms	436 KB	Output is correct
5	Correct	1 ms	468 KB	Output is correct
6	Correct	1 ms	468 KB	Output is correct
7	Correct	1 ms	468 KB	Output is correct
8	Correct	1 ms	468 KB	Output is correct
9	Correct	1 ms	468 KB	Output is correct
10	Correct	1 ms	468 KB	Output is correct
11	Correct	1 ms	468 KB	Output is correct
12	Correct	1 ms	468 KB	Output is correct
13	Correct	1 ms	468 KB	Output is correct
14	Correct	1 ms	480 KB	Output is correct
15	Correct	1 ms	428 KB	Output is correct
16	Correct	1 ms	468 KB	Output is correct
17	Correct	1 ms	468 KB	Output is correct
18	Correct	1 ms	468 KB	Output is correct
19	Correct	1 ms	468 KB	Output is correct
20	Correct	1 ms	468 KB	Output is correct
21	Correct	1 ms	468 KB	Output is correct
22	Correct	1 ms	520 KB	Output is correct
23	Correct	1 ms	468 KB	Output is correct
24	Correct	1 ms	468 KB	Output is correct
25	Correct	1 ms	468 KB	Output is correct
26	Correct	1 ms	468 KB	Output is correct
27	Correct	1 ms	428 KB	Output is correct
28	Correct	1 ms	468 KB	Output is correct
29	Correct	1 ms	468 KB	Output is correct

Subtask #3

28.0 / 28.0

#	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	Correct	1 ms	424 KB	Output is correct
4	Correct	1 ms	436 KB	Output is correct
5	Correct	1 ms	468 KB	Output is correct
6	Correct	1 ms	468 KB	Output is correct
7	Correct	1 ms	468 KB	Output is correct
8	Correct	1 ms	468 KB	Output is correct
9	Correct	1 ms	468 KB	Output is correct
10	Correct	1 ms	468 KB	Output is correct
11	Correct	1 ms	468 KB	Output is correct
12	Correct	1 ms	468 KB	Output is correct
13	Correct	1 ms	468 KB	Output is correct
14	Correct	1 ms	480 KB	Output is correct
15	Correct	1 ms	428 KB	Output is correct
16	Correct	1 ms	468 KB	Output is correct
17	Correct	1 ms	468 KB	Output is correct
18	Correct	1 ms	468 KB	Output is correct
19	Correct	1 ms	468 KB	Output is correct
20	Correct	1 ms	468 KB	Output is correct
21	Correct	1 ms	468 KB	Output is correct
22	Correct	1 ms	520 KB	Output is correct
23	Correct	1 ms	468 KB	Output is correct
24	Correct	1 ms	468 KB	Output is correct
25	Correct	1 ms	468 KB	Output is correct
26	Correct	1 ms	468 KB	Output is correct
27	Correct	1 ms	428 KB	Output is correct
28	Correct	1 ms	468 KB	Output is correct
29	Correct	1 ms	468 KB	Output is correct
30	Correct	102 ms	13004 KB	Output is correct
31	Correct	92 ms	12992 KB	Output is correct
32	Correct	96 ms	13084 KB	Output is correct
33	Correct	103 ms	12972 KB	Output is correct
34	Correct	100 ms	13100 KB	Output is correct
35	Correct	94 ms	12976 KB	Output is correct
36	Correct	96 ms	12992 KB	Output is correct
37	Correct	98 ms	13044 KB	Output is correct
38	Correct	97 ms	13104 KB	Output is correct
39	Correct	101 ms	13016 KB	Output is correct
40	Correct	88 ms	13072 KB	Output is correct
41	Correct	132 ms	13024 KB	Output is correct
42	Correct	96 ms	13112 KB	Output is correct
43	Correct	92 ms	13004 KB	Output is correct

Subtask #4

20.0 / 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	Correct	1 ms	428 KB	Output is correct
4	Correct	1 ms	468 KB	Output is correct
5	Correct	1 ms	468 KB	Output is correct
6	Correct	1 ms	468 KB	Output is correct
7	Correct	0 ms	468 KB	Output is correct
8	Correct	1 ms	468 KB	Output is correct
9	Correct	1 ms	436 KB	Output is correct
10	Correct	1 ms	468 KB	Output is correct
11	Correct	0 ms	468 KB	Output is correct
12	Correct	1 ms	468 KB	Output is correct
13	Correct	1 ms	468 KB	Output is correct
14	Correct	0 ms	468 KB	Output is correct
15	Correct	0 ms	468 KB	Output is correct
16	Correct	1 ms	468 KB	Output is correct
17	Correct	1 ms	468 KB	Output is correct
18	Correct	1 ms	468 KB	Output is correct
19	Correct	1 ms	468 KB	Output is correct
20	Correct	1 ms	468 KB	Output is correct

Subtask #5

30.0 / 30.0

#	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	Correct	1 ms	424 KB	Output is correct
4	Correct	1 ms	436 KB	Output is correct
5	Correct	1 ms	468 KB	Output is correct
6	Correct	1 ms	468 KB	Output is correct
7	Correct	1 ms	468 KB	Output is correct
8	Correct	1 ms	468 KB	Output is correct
9	Correct	1 ms	468 KB	Output is correct
10	Correct	1 ms	468 KB	Output is correct
11	Correct	1 ms	468 KB	Output is correct
12	Correct	1 ms	468 KB	Output is correct
13	Correct	1 ms	468 KB	Output is correct
14	Correct	1 ms	480 KB	Output is correct
15	Correct	1 ms	428 KB	Output is correct
16	Correct	1 ms	468 KB	Output is correct
17	Correct	1 ms	468 KB	Output is correct
18	Correct	1 ms	468 KB	Output is correct
19	Correct	1 ms	468 KB	Output is correct
20	Correct	1 ms	468 KB	Output is correct
21	Correct	1 ms	468 KB	Output is correct
22	Correct	1 ms	520 KB	Output is correct
23	Correct	1 ms	468 KB	Output is correct
24	Correct	1 ms	468 KB	Output is correct
25	Correct	1 ms	468 KB	Output is correct
26	Correct	1 ms	468 KB	Output is correct
27	Correct	1 ms	428 KB	Output is correct
28	Correct	1 ms	468 KB	Output is correct
29	Correct	1 ms	468 KB	Output is correct
30	Correct	102 ms	13004 KB	Output is correct
31	Correct	92 ms	12992 KB	Output is correct
32	Correct	96 ms	13084 KB	Output is correct
33	Correct	103 ms	12972 KB	Output is correct
34	Correct	100 ms	13100 KB	Output is correct
35	Correct	94 ms	12976 KB	Output is correct
36	Correct	96 ms	12992 KB	Output is correct
37	Correct	98 ms	13044 KB	Output is correct
38	Correct	97 ms	13104 KB	Output is correct
39	Correct	101 ms	13016 KB	Output is correct
40	Correct	88 ms	13072 KB	Output is correct
41	Correct	132 ms	13024 KB	Output is correct
42	Correct	96 ms	13112 KB	Output is correct
43	Correct	92 ms	13004 KB	Output is correct
44	Correct	1 ms	468 KB	Output is correct
45	Correct	1 ms	468 KB	Output is correct
46	Correct	1 ms	428 KB	Output is correct
47	Correct	1 ms	468 KB	Output is correct
48	Correct	1 ms	468 KB	Output is correct
49	Correct	1 ms	468 KB	Output is correct
50	Correct	0 ms	468 KB	Output is correct
51	Correct	1 ms	468 KB	Output is correct
52	Correct	1 ms	436 KB	Output is correct
53	Correct	1 ms	468 KB	Output is correct
54	Correct	0 ms	468 KB	Output is correct
55	Correct	1 ms	468 KB	Output is correct
56	Correct	1 ms	468 KB	Output is correct
57	Correct	0 ms	468 KB	Output is correct
58	Correct	0 ms	468 KB	Output is correct
59	Correct	1 ms	468 KB	Output is correct
60	Correct	1 ms	468 KB	Output is correct
61	Correct	1 ms	468 KB	Output is correct
62	Correct	1 ms	468 KB	Output is correct
63	Correct	1 ms	468 KB	Output is correct
64	Correct	91 ms	15080 KB	Output is correct
65	Correct	104 ms	15080 KB	Output is correct
66	Correct	95 ms	15084 KB	Output is correct
67	Correct	93 ms	15080 KB	Output is correct
68	Correct	9 ms	1876 KB	Output is correct
69	Correct	9 ms	1852 KB	Output is correct
70	Correct	9 ms	1792 KB	Output is correct
71	Correct	9 ms	1852 KB	Output is correct
72	Correct	10 ms	1792 KB	Output is correct
73	Correct	9 ms	1788 KB	Output is correct
74	Correct	92 ms	14988 KB	Output is correct
75	Correct	111 ms	15200 KB	Output is correct
76	Correct	97 ms	15128 KB	Output is correct
77	Correct	88 ms	15104 KB	Output is correct
78	Correct	92 ms	15084 KB	Output is correct
79	Correct	95 ms	15088 KB	Output is correct
80	Correct	94 ms	15076 KB	Output is correct
81	Correct	94 ms	15072 KB	Output is correct
82	Correct	90 ms	15088 KB	Output is correct
83	Correct	104 ms	15084 KB	Output is correct
84	Correct	106 ms	15200 KB	Output is correct
85	Correct	104 ms	15092 KB	Output is correct
86	Correct	90 ms	15072 KB	Output is correct
87	Correct	91 ms	15068 KB	Output is correct
88	Correct	93 ms	15084 KB	Output is correct
89	Correct	104 ms	15092 KB	Output is correct
90	Correct	100 ms	15080 KB	Output is correct
91	Correct	89 ms	15076 KB	Output is correct
92	Correct	90 ms	15080 KB	Output is correct