Submission #748850

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
748850	2023-05-27T05:24:35 Z	wenqi	Ancient Books (IOI17_books)	C++17	50 / 100	237 ms	52812 KB

books

#include "books.h"
#include <algorithm>
#include <cmath>
#include <cstring>
#include <queue>
#include <set>

using namespace std;
using ll = long long;

bool seen[1000005];
vector<int> P;
vector<int> t;

ll dfs(int i)
{
	if (seen[i])
		return 0;
	seen[i] = true;
	t.push_back(i);
	return abs(i - P[i]) + dfs(P[i]);
}

ll minimum_walk(vector<int> p, int s)
{
	memset(seen, 0, sizeof(seen));
	P = p;
	ll sum = 0;
	int n = p.size();
	vector<pair<int, int>> q;
	q.push_back({s, s});
	for (int i = 0; i < n; i++)
	{
		if (seen[i] or i == p[i])
			continue;
		t.clear();
		sum += dfs(i);
		sort(t.begin(), t.end());
		q.push_back({t.front(), t.back()});
	}
	sort(q.begin(), q.end());
	int lt = -1;
	for (auto [a, b] : q)
	{
		if (lt == -1)
		{
			lt = b;
		}
		if (a > lt)
		{
			sum += 2 * (a - lt);
			lt = b;
		}
		else
		{
			lt = max(lt, b);
		}
	}
	return sum;
}

Subtask #1

12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	1236 KB	Output is correct
2	Correct	1 ms	1236 KB	Output is correct
3	Correct	1 ms	1236 KB	Output is correct
4	Correct	1 ms	1236 KB	Output is correct
5	Correct	1 ms	1236 KB	Output is correct
6	Correct	1 ms	1236 KB	Output is correct
7	Correct	1 ms	1236 KB	Output is correct
8	Correct	1 ms	1236 KB	Output is correct
9	Correct	1 ms	1236 KB	Output is correct
10	Correct	1 ms	1236 KB	Output is correct
11	Correct	1 ms	1236 KB	Output is correct
12	Correct	1 ms	1236 KB	Output is correct
13	Correct	1 ms	1236 KB	Output is correct
14	Correct	1 ms	1236 KB	Output is correct
15	Correct	1 ms	1236 KB	Output is correct
16	Correct	1 ms	1236 KB	Output is correct
17	Correct	1 ms	1236 KB	Output is correct
18	Correct	1 ms	1236 KB	Output is correct

Subtask #2

10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	1236 KB	Output is correct
2	Correct	1 ms	1236 KB	Output is correct
3	Correct	1 ms	1236 KB	Output is correct
4	Correct	1 ms	1236 KB	Output is correct
5	Correct	1 ms	1236 KB	Output is correct
6	Correct	1 ms	1236 KB	Output is correct
7	Correct	1 ms	1236 KB	Output is correct
8	Correct	1 ms	1236 KB	Output is correct
9	Correct	1 ms	1236 KB	Output is correct
10	Correct	1 ms	1236 KB	Output is correct
11	Correct	1 ms	1236 KB	Output is correct
12	Correct	1 ms	1236 KB	Output is correct
13	Correct	1 ms	1236 KB	Output is correct
14	Correct	1 ms	1236 KB	Output is correct
15	Correct	1 ms	1236 KB	Output is correct
16	Correct	1 ms	1236 KB	Output is correct
17	Correct	1 ms	1236 KB	Output is correct
18	Correct	1 ms	1236 KB	Output is correct
19	Correct	1 ms	1236 KB	Output is correct
20	Correct	1 ms	1236 KB	Output is correct
21	Correct	1 ms	1236 KB	Output is correct
22	Correct	1 ms	1236 KB	Output is correct
23	Correct	1 ms	1236 KB	Output is correct
24	Correct	1 ms	1236 KB	Output is correct
25	Correct	1 ms	1236 KB	Output is correct
26	Correct	1 ms	1236 KB	Output is correct
27	Correct	1 ms	1236 KB	Output is correct
28	Correct	1 ms	1236 KB	Output is correct
29	Correct	1 ms	1236 KB	Output is correct

Subtask #3

28.0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	1236 KB	Output is correct
2	Correct	1 ms	1236 KB	Output is correct
3	Correct	1 ms	1236 KB	Output is correct
4	Correct	1 ms	1236 KB	Output is correct
5	Correct	1 ms	1236 KB	Output is correct
6	Correct	1 ms	1236 KB	Output is correct
7	Correct	1 ms	1236 KB	Output is correct
8	Correct	1 ms	1236 KB	Output is correct
9	Correct	1 ms	1236 KB	Output is correct
10	Correct	1 ms	1236 KB	Output is correct
11	Correct	1 ms	1236 KB	Output is correct
12	Correct	1 ms	1236 KB	Output is correct
13	Correct	1 ms	1236 KB	Output is correct
14	Correct	1 ms	1236 KB	Output is correct
15	Correct	1 ms	1236 KB	Output is correct
16	Correct	1 ms	1236 KB	Output is correct
17	Correct	1 ms	1236 KB	Output is correct
18	Correct	1 ms	1236 KB	Output is correct
19	Correct	1 ms	1236 KB	Output is correct
20	Correct	1 ms	1236 KB	Output is correct
21	Correct	1 ms	1236 KB	Output is correct
22	Correct	1 ms	1236 KB	Output is correct
23	Correct	1 ms	1236 KB	Output is correct
24	Correct	1 ms	1236 KB	Output is correct
25	Correct	1 ms	1236 KB	Output is correct
26	Correct	1 ms	1236 KB	Output is correct
27	Correct	1 ms	1236 KB	Output is correct
28	Correct	1 ms	1236 KB	Output is correct
29	Correct	1 ms	1236 KB	Output is correct
30	Correct	237 ms	52812 KB	Output is correct
31	Correct	228 ms	32740 KB	Output is correct
32	Correct	86 ms	12904 KB	Output is correct
33	Correct	95 ms	15080 KB	Output is correct
34	Correct	101 ms	15076 KB	Output is correct
35	Correct	101 ms	15068 KB	Output is correct
36	Correct	107 ms	15076 KB	Output is correct
37	Correct	120 ms	13412 KB	Output is correct
38	Correct	136 ms	13352 KB	Output is correct
39	Correct	140 ms	13284 KB	Output is correct
40	Correct	152 ms	15056 KB	Output is correct
41	Correct	193 ms	30188 KB	Output is correct
42	Correct	184 ms	21236 KB	Output is correct
43	Correct	98 ms	15184 KB	Output is correct

Subtask #4

0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	1 ms	1236 KB	3rd lines differ - on the 1st token, expected: '3304', found: '2744'
2	Halted	0 ms	0 KB	-

Subtask #5

0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	1236 KB	Output is correct
2	Correct	1 ms	1236 KB	Output is correct
3	Correct	1 ms	1236 KB	Output is correct
4	Correct	1 ms	1236 KB	Output is correct
5	Correct	1 ms	1236 KB	Output is correct
6	Correct	1 ms	1236 KB	Output is correct
7	Correct	1 ms	1236 KB	Output is correct
8	Correct	1 ms	1236 KB	Output is correct
9	Correct	1 ms	1236 KB	Output is correct
10	Correct	1 ms	1236 KB	Output is correct
11	Correct	1 ms	1236 KB	Output is correct
12	Correct	1 ms	1236 KB	Output is correct
13	Correct	1 ms	1236 KB	Output is correct
14	Correct	1 ms	1236 KB	Output is correct
15	Correct	1 ms	1236 KB	Output is correct
16	Correct	1 ms	1236 KB	Output is correct
17	Correct	1 ms	1236 KB	Output is correct
18	Correct	1 ms	1236 KB	Output is correct
19	Correct	1 ms	1236 KB	Output is correct
20	Correct	1 ms	1236 KB	Output is correct
21	Correct	1 ms	1236 KB	Output is correct
22	Correct	1 ms	1236 KB	Output is correct
23	Correct	1 ms	1236 KB	Output is correct
24	Correct	1 ms	1236 KB	Output is correct
25	Correct	1 ms	1236 KB	Output is correct
26	Correct	1 ms	1236 KB	Output is correct
27	Correct	1 ms	1236 KB	Output is correct
28	Correct	1 ms	1236 KB	Output is correct
29	Correct	1 ms	1236 KB	Output is correct
30	Correct	237 ms	52812 KB	Output is correct
31	Correct	228 ms	32740 KB	Output is correct
32	Correct	86 ms	12904 KB	Output is correct
33	Correct	95 ms	15080 KB	Output is correct
34	Correct	101 ms	15076 KB	Output is correct
35	Correct	101 ms	15068 KB	Output is correct
36	Correct	107 ms	15076 KB	Output is correct
37	Correct	120 ms	13412 KB	Output is correct
38	Correct	136 ms	13352 KB	Output is correct
39	Correct	140 ms	13284 KB	Output is correct
40	Correct	152 ms	15056 KB	Output is correct
41	Correct	193 ms	30188 KB	Output is correct
42	Correct	184 ms	21236 KB	Output is correct
43	Correct	98 ms	15184 KB	Output is correct
44	Incorrect	1 ms	1236 KB	3rd lines differ - on the 1st token, expected: '3304', found: '2744'
45	Halted	0 ms	0 KB	-