Submission #811309

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
811309	2023-08-07T03:59:49 Z	LittleCube	Ancient Books (IOI17_books)	C++17	100 / 100	157 ms	72236 KB

books

#pragma GCC optimize("Ofast,unroll-loops")
#include "books.h"
#include <bits/stdc++.h>
#define ll long long
#define pii pair<int, int>
#define pll pair<ll, ll>
#define F first
#define S second
using namespace std;

int n, reach[1000006], g[1000006], l, r;
vector<int> out[1000006];
long long minimum_walk(vector<int> p, int s)
{
	{
		n = p.size();
		int l = 0, r = n - 1;
		while (l < s && p[l] == l)
			l++;
		while (r > s && p[r] == r)
			r--;
		p = vector<int>(p.begin() + l, p.begin() + r + 1);
		n = p.size();
		s -= l;
		for (auto &i : p)
			i -= l;
	}

	ll ans = 0;

	vector<pii> edge;
	for (int i = 0; i < n; i++)
		reach[i] = i;
	for (int i = 0; i < n; i++)
	{
		ans += abs(p[i] - i);
		int u = min(p[i], i), v = max(p[i], i);
		if (v <= s || s <= u)
			reach[u] = max(reach[u], v);
		else
			edge.emplace_back(pii(u, v));
	}
	for (int i = 1; i < n; i++)
		reach[i] = max(reach[i - 1], reach[i]);
	int last = 0, m = 0;
	for (int i = 0; i < n; i++)
	{
		if (last < i)
			++m;
		g[i] = m;
		last = max(last, reach[i]);
	}
	int L = g[s], R = g[s];
	for (auto &[u, v] : edge)
	{
		u = g[u], v = g[v];
		L = min(L, u);
		R = max(R, v);
		out[u].emplace_back(v);
		out[v].emplace_back(u);
	}
	ans += 2 * (L + m - R);
	int l = g[s] + 1, r = g[s] - 1;
	ans -= 2;
	while (L < l || r < R)
	{
		ans += 2;
		int nl = max(L, l - 1), nr = min(R, r + 1);
		while (nl < l || r < nr)
		{
			if (nl < l)
			{
				l--;
				for (auto i : out[l])
					nl = min(i, nl), nr = max(i, nr);
			}
			else
			{
				r++;
				for (auto i : out[r])
					nl = min(i, nl), nr = max(i, nr);
			}
		}
	}

	return ans;
}

Subtask #1
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	13 ms	23796 KB	Output is correct
2	Correct	13 ms	23764 KB	Output is correct
3	Correct	13 ms	23804 KB	Output is correct
4	Correct	13 ms	23764 KB	Output is correct
5	Correct	13 ms	23692 KB	Output is correct
6	Correct	13 ms	23764 KB	Output is correct
7	Correct	13 ms	23768 KB	Output is correct
8	Correct	14 ms	23736 KB	Output is correct
9	Correct	13 ms	23764 KB	Output is correct
10	Correct	13 ms	23716 KB	Output is correct
11	Correct	14 ms	23800 KB	Output is correct
12	Correct	13 ms	23736 KB	Output is correct
13	Correct	15 ms	23764 KB	Output is correct
14	Correct	13 ms	23708 KB	Output is correct
15	Correct	15 ms	23720 KB	Output is correct
16	Correct	13 ms	23756 KB	Output is correct
17	Correct	13 ms	23748 KB	Output is correct
18	Correct	14 ms	23700 KB	Output is correct

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	13 ms	23796 KB	Output is correct
2	Correct	13 ms	23764 KB	Output is correct
3	Correct	13 ms	23804 KB	Output is correct
4	Correct	13 ms	23764 KB	Output is correct
5	Correct	13 ms	23692 KB	Output is correct
6	Correct	13 ms	23764 KB	Output is correct
7	Correct	13 ms	23768 KB	Output is correct
8	Correct	14 ms	23736 KB	Output is correct
9	Correct	13 ms	23764 KB	Output is correct
10	Correct	13 ms	23716 KB	Output is correct
11	Correct	14 ms	23800 KB	Output is correct
12	Correct	13 ms	23736 KB	Output is correct
13	Correct	15 ms	23764 KB	Output is correct
14	Correct	13 ms	23708 KB	Output is correct
15	Correct	15 ms	23720 KB	Output is correct
16	Correct	13 ms	23756 KB	Output is correct
17	Correct	13 ms	23748 KB	Output is correct
18	Correct	14 ms	23700 KB	Output is correct
19	Correct	13 ms	23804 KB	Output is correct
20	Correct	14 ms	23708 KB	Output is correct
21	Correct	13 ms	23764 KB	Output is correct
22	Correct	13 ms	23812 KB	Output is correct
23	Correct	14 ms	23764 KB	Output is correct
24	Correct	14 ms	23820 KB	Output is correct
25	Correct	14 ms	23764 KB	Output is correct
26	Correct	13 ms	23824 KB	Output is correct
27	Correct	14 ms	23764 KB	Output is correct
28	Correct	13 ms	23764 KB	Output is correct
29	Correct	13 ms	23764 KB	Output is correct

Subtask #3
28.0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	13 ms	23796 KB	Output is correct
2	Correct	13 ms	23764 KB	Output is correct
3	Correct	13 ms	23804 KB	Output is correct
4	Correct	13 ms	23764 KB	Output is correct
5	Correct	13 ms	23692 KB	Output is correct
6	Correct	13 ms	23764 KB	Output is correct
7	Correct	13 ms	23768 KB	Output is correct
8	Correct	14 ms	23736 KB	Output is correct
9	Correct	13 ms	23764 KB	Output is correct
10	Correct	13 ms	23716 KB	Output is correct
11	Correct	14 ms	23800 KB	Output is correct
12	Correct	13 ms	23736 KB	Output is correct
13	Correct	15 ms	23764 KB	Output is correct
14	Correct	13 ms	23708 KB	Output is correct
15	Correct	15 ms	23720 KB	Output is correct
16	Correct	13 ms	23756 KB	Output is correct
17	Correct	13 ms	23748 KB	Output is correct
18	Correct	14 ms	23700 KB	Output is correct
19	Correct	13 ms	23804 KB	Output is correct
20	Correct	14 ms	23708 KB	Output is correct
21	Correct	13 ms	23764 KB	Output is correct
22	Correct	13 ms	23812 KB	Output is correct
23	Correct	14 ms	23764 KB	Output is correct
24	Correct	14 ms	23820 KB	Output is correct
25	Correct	14 ms	23764 KB	Output is correct
26	Correct	13 ms	23824 KB	Output is correct
27	Correct	14 ms	23764 KB	Output is correct
28	Correct	13 ms	23764 KB	Output is correct
29	Correct	13 ms	23764 KB	Output is correct
30	Correct	94 ms	39388 KB	Output is correct
31	Correct	94 ms	39408 KB	Output is correct
32	Correct	84 ms	31540 KB	Output is correct
33	Correct	93 ms	39420 KB	Output is correct
34	Correct	94 ms	39412 KB	Output is correct
35	Correct	94 ms	39404 KB	Output is correct
36	Correct	101 ms	39404 KB	Output is correct
37	Correct	94 ms	39432 KB	Output is correct
38	Correct	95 ms	39420 KB	Output is correct
39	Correct	94 ms	39408 KB	Output is correct
40	Correct	95 ms	39412 KB	Output is correct
41	Correct	100 ms	39408 KB	Output is correct
42	Correct	94 ms	39420 KB	Output is correct
43	Correct	97 ms	39404 KB	Output is correct

Subtask #4
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	13 ms	23764 KB	Output is correct
2	Correct	13 ms	23780 KB	Output is correct
3	Correct	14 ms	23788 KB	Output is correct
4	Correct	14 ms	23824 KB	Output is correct
5	Correct	14 ms	23764 KB	Output is correct
6	Correct	13 ms	23764 KB	Output is correct
7	Correct	14 ms	23796 KB	Output is correct
8	Correct	14 ms	23792 KB	Output is correct
9	Correct	13 ms	23764 KB	Output is correct
10	Correct	14 ms	23764 KB	Output is correct
11	Correct	14 ms	23792 KB	Output is correct
12	Correct	13 ms	23764 KB	Output is correct
13	Correct	14 ms	23764 KB	Output is correct
14	Correct	13 ms	23792 KB	Output is correct
15	Correct	14 ms	23716 KB	Output is correct
16	Correct	14 ms	23700 KB	Output is correct
17	Correct	13 ms	23808 KB	Output is correct
18	Correct	13 ms	23828 KB	Output is correct
19	Correct	14 ms	23764 KB	Output is correct
20	Correct	14 ms	23764 KB	Output is correct

Subtask #5
30.0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	13 ms	23796 KB	Output is correct
2	Correct	13 ms	23764 KB	Output is correct
3	Correct	13 ms	23804 KB	Output is correct
4	Correct	13 ms	23764 KB	Output is correct
5	Correct	13 ms	23692 KB	Output is correct
6	Correct	13 ms	23764 KB	Output is correct
7	Correct	13 ms	23768 KB	Output is correct
8	Correct	14 ms	23736 KB	Output is correct
9	Correct	13 ms	23764 KB	Output is correct
10	Correct	13 ms	23716 KB	Output is correct
11	Correct	14 ms	23800 KB	Output is correct
12	Correct	13 ms	23736 KB	Output is correct
13	Correct	15 ms	23764 KB	Output is correct
14	Correct	13 ms	23708 KB	Output is correct
15	Correct	15 ms	23720 KB	Output is correct
16	Correct	13 ms	23756 KB	Output is correct
17	Correct	13 ms	23748 KB	Output is correct
18	Correct	14 ms	23700 KB	Output is correct
19	Correct	13 ms	23804 KB	Output is correct
20	Correct	14 ms	23708 KB	Output is correct
21	Correct	13 ms	23764 KB	Output is correct
22	Correct	13 ms	23812 KB	Output is correct
23	Correct	14 ms	23764 KB	Output is correct
24	Correct	14 ms	23820 KB	Output is correct
25	Correct	14 ms	23764 KB	Output is correct
26	Correct	13 ms	23824 KB	Output is correct
27	Correct	14 ms	23764 KB	Output is correct
28	Correct	13 ms	23764 KB	Output is correct
29	Correct	13 ms	23764 KB	Output is correct
30	Correct	94 ms	39388 KB	Output is correct
31	Correct	94 ms	39408 KB	Output is correct
32	Correct	84 ms	31540 KB	Output is correct
33	Correct	93 ms	39420 KB	Output is correct
34	Correct	94 ms	39412 KB	Output is correct
35	Correct	94 ms	39404 KB	Output is correct
36	Correct	101 ms	39404 KB	Output is correct
37	Correct	94 ms	39432 KB	Output is correct
38	Correct	95 ms	39420 KB	Output is correct
39	Correct	94 ms	39408 KB	Output is correct
40	Correct	95 ms	39412 KB	Output is correct
41	Correct	100 ms	39408 KB	Output is correct
42	Correct	94 ms	39420 KB	Output is correct
43	Correct	97 ms	39404 KB	Output is correct
44	Correct	13 ms	23764 KB	Output is correct
45	Correct	13 ms	23780 KB	Output is correct
46	Correct	14 ms	23788 KB	Output is correct
47	Correct	14 ms	23824 KB	Output is correct
48	Correct	14 ms	23764 KB	Output is correct
49	Correct	13 ms	23764 KB	Output is correct
50	Correct	14 ms	23796 KB	Output is correct
51	Correct	14 ms	23792 KB	Output is correct
52	Correct	13 ms	23764 KB	Output is correct
53	Correct	14 ms	23764 KB	Output is correct
54	Correct	14 ms	23792 KB	Output is correct
55	Correct	13 ms	23764 KB	Output is correct
56	Correct	14 ms	23764 KB	Output is correct
57	Correct	13 ms	23792 KB	Output is correct
58	Correct	14 ms	23716 KB	Output is correct
59	Correct	14 ms	23700 KB	Output is correct
60	Correct	13 ms	23808 KB	Output is correct
61	Correct	13 ms	23828 KB	Output is correct
62	Correct	14 ms	23764 KB	Output is correct
63	Correct	14 ms	23764 KB	Output is correct
64	Correct	100 ms	46060 KB	Output is correct
65	Correct	96 ms	46044 KB	Output is correct
66	Correct	93 ms	46176 KB	Output is correct
67	Correct	96 ms	46176 KB	Output is correct
68	Correct	22 ms	25932 KB	Output is correct
69	Correct	23 ms	25836 KB	Output is correct
70	Correct	22 ms	25932 KB	Output is correct
71	Correct	22 ms	25840 KB	Output is correct
72	Correct	21 ms	25836 KB	Output is correct
73	Correct	22 ms	26188 KB	Output is correct
74	Correct	95 ms	46052 KB	Output is correct
75	Correct	97 ms	46044 KB	Output is correct
76	Correct	99 ms	46216 KB	Output is correct
77	Correct	92 ms	46184 KB	Output is correct
78	Correct	99 ms	46132 KB	Output is correct
79	Correct	108 ms	46044 KB	Output is correct
80	Correct	89 ms	38312 KB	Output is correct
81	Correct	157 ms	72236 KB	Output is correct
82	Correct	131 ms	72188 KB	Output is correct
83	Correct	101 ms	48456 KB	Output is correct
84	Correct	110 ms	47836 KB	Output is correct
85	Correct	95 ms	46728 KB	Output is correct
86	Correct	93 ms	46296 KB	Output is correct
87	Correct	120 ms	58172 KB	Output is correct
88	Correct	119 ms	53168 KB	Output is correct
89	Correct	109 ms	49248 KB	Output is correct
90	Correct	93 ms	46136 KB	Output is correct
91	Correct	94 ms	46172 KB	Output is correct
92	Correct	94 ms	46048 KB	Output is correct

Submission #811309

Compilation message

Subtask #1 12.0 / 12.0

Subtask #2 10.0 / 10.0

Subtask #3 28.0 / 28.0

Subtask #4 20.0 / 20.0

Subtask #5 30.0 / 30.0

Subtask #1
12.0 / 12.0

Subtask #2
10.0 / 10.0

Subtask #3
28.0 / 28.0

Subtask #4
20.0 / 20.0

Subtask #5
30.0 / 30.0