Submission #811280

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
811280	2023-08-07T03:43:08 Z	LittleCube	Ancient Books (IOI17_books)	C++17	50 / 100	107 ms	46176 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]);
	}
	for (auto &[u, v] : edge)
	{
		u = g[u], v = g[v];
		out[u].emplace_back(v);
		out[v].emplace_back(u);
	}
	int l = g[s], r = g[s];
	while (0 < l || r < m)
	{
		ans += 2;
		int nl = max(0, l - 1), nr = min(m, 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	23800 KB	Output is correct
2	Correct	14 ms	23768 KB	Output is correct
3	Correct	14 ms	23732 KB	Output is correct
4	Correct	14 ms	23792 KB	Output is correct
5	Correct	14 ms	23800 KB	Output is correct
6	Correct	14 ms	23764 KB	Output is correct
7	Correct	14 ms	23796 KB	Output is correct
8	Correct	13 ms	23764 KB	Output is correct
9	Correct	14 ms	23764 KB	Output is correct
10	Correct	14 ms	23800 KB	Output is correct
11	Correct	15 ms	23764 KB	Output is correct
12	Correct	14 ms	23764 KB	Output is correct
13	Correct	14 ms	23764 KB	Output is correct
14	Correct	18 ms	23792 KB	Output is correct
15	Correct	14 ms	23756 KB	Output is correct
16	Correct	14 ms	23804 KB	Output is correct
17	Correct	14 ms	23684 KB	Output is correct
18	Correct	14 ms	23764 KB	Output is correct

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	13 ms	23800 KB	Output is correct
2	Correct	14 ms	23768 KB	Output is correct
3	Correct	14 ms	23732 KB	Output is correct
4	Correct	14 ms	23792 KB	Output is correct
5	Correct	14 ms	23800 KB	Output is correct
6	Correct	14 ms	23764 KB	Output is correct
7	Correct	14 ms	23796 KB	Output is correct
8	Correct	13 ms	23764 KB	Output is correct
9	Correct	14 ms	23764 KB	Output is correct
10	Correct	14 ms	23800 KB	Output is correct
11	Correct	15 ms	23764 KB	Output is correct
12	Correct	14 ms	23764 KB	Output is correct
13	Correct	14 ms	23764 KB	Output is correct
14	Correct	18 ms	23792 KB	Output is correct
15	Correct	14 ms	23756 KB	Output is correct
16	Correct	14 ms	23804 KB	Output is correct
17	Correct	14 ms	23684 KB	Output is correct
18	Correct	14 ms	23764 KB	Output is correct
19	Correct	14 ms	23796 KB	Output is correct
20	Correct	14 ms	23820 KB	Output is correct
21	Correct	15 ms	23796 KB	Output is correct
22	Correct	14 ms	23736 KB	Output is correct
23	Correct	14 ms	23796 KB	Output is correct
24	Correct	15 ms	23792 KB	Output is correct
25	Correct	15 ms	23792 KB	Output is correct
26	Correct	14 ms	23764 KB	Output is correct
27	Correct	14 ms	23700 KB	Output is correct
28	Correct	14 ms	23796 KB	Output is correct
29	Correct	14 ms	23780 KB	Output is correct

Subtask #3
28.0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	13 ms	23800 KB	Output is correct
2	Correct	14 ms	23768 KB	Output is correct
3	Correct	14 ms	23732 KB	Output is correct
4	Correct	14 ms	23792 KB	Output is correct
5	Correct	14 ms	23800 KB	Output is correct
6	Correct	14 ms	23764 KB	Output is correct
7	Correct	14 ms	23796 KB	Output is correct
8	Correct	13 ms	23764 KB	Output is correct
9	Correct	14 ms	23764 KB	Output is correct
10	Correct	14 ms	23800 KB	Output is correct
11	Correct	15 ms	23764 KB	Output is correct
12	Correct	14 ms	23764 KB	Output is correct
13	Correct	14 ms	23764 KB	Output is correct
14	Correct	18 ms	23792 KB	Output is correct
15	Correct	14 ms	23756 KB	Output is correct
16	Correct	14 ms	23804 KB	Output is correct
17	Correct	14 ms	23684 KB	Output is correct
18	Correct	14 ms	23764 KB	Output is correct
19	Correct	14 ms	23796 KB	Output is correct
20	Correct	14 ms	23820 KB	Output is correct
21	Correct	15 ms	23796 KB	Output is correct
22	Correct	14 ms	23736 KB	Output is correct
23	Correct	14 ms	23796 KB	Output is correct
24	Correct	15 ms	23792 KB	Output is correct
25	Correct	15 ms	23792 KB	Output is correct
26	Correct	14 ms	23764 KB	Output is correct
27	Correct	14 ms	23700 KB	Output is correct
28	Correct	14 ms	23796 KB	Output is correct
29	Correct	14 ms	23780 KB	Output is correct
30	Correct	101 ms	46056 KB	Output is correct
31	Correct	107 ms	46088 KB	Output is correct
32	Correct	92 ms	38220 KB	Output is correct
33	Correct	102 ms	46088 KB	Output is correct
34	Correct	107 ms	46132 KB	Output is correct
35	Correct	103 ms	46048 KB	Output is correct
36	Correct	103 ms	46176 KB	Output is correct
37	Correct	100 ms	46056 KB	Output is correct
38	Correct	100 ms	46040 KB	Output is correct
39	Correct	106 ms	46128 KB	Output is correct
40	Correct	100 ms	46104 KB	Output is correct
41	Correct	102 ms	46044 KB	Output is correct
42	Correct	103 ms	46048 KB	Output is correct
43	Correct	100 ms	46172 KB	Output is correct

Subtask #4
0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	15 ms	23764 KB	3rd lines differ - on the 1st token, expected: '3304', found: '3308'
2	Halted	0 ms	0 KB	-

Subtask #5
0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	13 ms	23800 KB	Output is correct
2	Correct	14 ms	23768 KB	Output is correct
3	Correct	14 ms	23732 KB	Output is correct
4	Correct	14 ms	23792 KB	Output is correct
5	Correct	14 ms	23800 KB	Output is correct
6	Correct	14 ms	23764 KB	Output is correct
7	Correct	14 ms	23796 KB	Output is correct
8	Correct	13 ms	23764 KB	Output is correct
9	Correct	14 ms	23764 KB	Output is correct
10	Correct	14 ms	23800 KB	Output is correct
11	Correct	15 ms	23764 KB	Output is correct
12	Correct	14 ms	23764 KB	Output is correct
13	Correct	14 ms	23764 KB	Output is correct
14	Correct	18 ms	23792 KB	Output is correct
15	Correct	14 ms	23756 KB	Output is correct
16	Correct	14 ms	23804 KB	Output is correct
17	Correct	14 ms	23684 KB	Output is correct
18	Correct	14 ms	23764 KB	Output is correct
19	Correct	14 ms	23796 KB	Output is correct
20	Correct	14 ms	23820 KB	Output is correct
21	Correct	15 ms	23796 KB	Output is correct
22	Correct	14 ms	23736 KB	Output is correct
23	Correct	14 ms	23796 KB	Output is correct
24	Correct	15 ms	23792 KB	Output is correct
25	Correct	15 ms	23792 KB	Output is correct
26	Correct	14 ms	23764 KB	Output is correct
27	Correct	14 ms	23700 KB	Output is correct
28	Correct	14 ms	23796 KB	Output is correct
29	Correct	14 ms	23780 KB	Output is correct
30	Correct	101 ms	46056 KB	Output is correct
31	Correct	107 ms	46088 KB	Output is correct
32	Correct	92 ms	38220 KB	Output is correct
33	Correct	102 ms	46088 KB	Output is correct
34	Correct	107 ms	46132 KB	Output is correct
35	Correct	103 ms	46048 KB	Output is correct
36	Correct	103 ms	46176 KB	Output is correct
37	Correct	100 ms	46056 KB	Output is correct
38	Correct	100 ms	46040 KB	Output is correct
39	Correct	106 ms	46128 KB	Output is correct
40	Correct	100 ms	46104 KB	Output is correct
41	Correct	102 ms	46044 KB	Output is correct
42	Correct	103 ms	46048 KB	Output is correct
43	Correct	100 ms	46172 KB	Output is correct
44	Incorrect	15 ms	23764 KB	3rd lines differ - on the 1st token, expected: '3304', found: '3308'
45	Halted	0 ms	0 KB	-

Submission #811280

Compilation message

Subtask #1 12.0 / 12.0

Subtask #2 10.0 / 10.0

Subtask #3 28.0 / 28.0

Subtask #4 0 / 20.0

Subtask #5 0 / 30.0

Subtask #1
12.0 / 12.0

Subtask #2
10.0 / 10.0

Subtask #3
28.0 / 28.0

Subtask #4
0 / 20.0

Subtask #5
0 / 30.0