Submission #137615

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
137615	2019-07-28T07:35:01 Z	Mahdi_Jfri	Ancient Books (IOI17_books)	C++14	50 / 100	395 ms	42072 KB

books

#include "books.h"
#include<bits/stdc++.h>

using namespace std;

#define ll long long
#define pb push_back

const int maxn = 1e6 + 20;

int par[maxn];

int root(int v)
{
	return par[v] < 0? v : par[v] = root(par[v]);
}

bool merge(int v , int u)
{
	v = root(v) , u = root(u);
	if(v == u)
		return 0;

	par[v] = u;
	return 1;
}

int cnt[maxn];

long long minimum_walk(vector<int> p, int s)
{
	memset(par , -1 , sizeof par);
	ll res = 0;
	int n = p.size();

	vector<int> val;
	for(int i = 0; i < n; i++)
	{
		res += abs(p[i] - i) , merge(i , p[i]);
		if(i < p[i])
			cnt[i]++ , cnt[p[i]]--;
		if(p[i] != i || i == s)
			val.pb(i);
	}

	for(int i = 1; i < n; i++)
		cnt[i] += cnt[i - 1];

	for(int i = 0; i < n; i++)
		if(cnt[i])
			merge(i , i + 1);

	int m = val.size();
	vector<pair<int , pair<int , int> > > tmp;
	for(int i = 0; i + 1 < m; i++)
		tmp.pb({val[i + 1] - val[i] , {val[i] , val[i + 1]}});
	sort(tmp.begin() , tmp.end());

	for(auto x : tmp)
	{
		int a = x.second.first , b = x.second.second;
		if(merge(a , b))
			res += 2 * x.first;
	}
	return res;
}

Subtask #1

12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	4260 KB	Output is correct
2	Correct	5 ms	4216 KB	Output is correct
3	Correct	5 ms	4216 KB	Output is correct
4	Correct	5 ms	4216 KB	Output is correct
5	Correct	5 ms	4216 KB	Output is correct
6	Correct	5 ms	4216 KB	Output is correct
7	Correct	5 ms	4216 KB	Output is correct
8	Correct	5 ms	4216 KB	Output is correct
9	Correct	5 ms	4216 KB	Output is correct
10	Correct	5 ms	4216 KB	Output is correct
11	Correct	5 ms	4216 KB	Output is correct
12	Correct	5 ms	4216 KB	Output is correct
13	Correct	5 ms	4216 KB	Output is correct
14	Correct	5 ms	4216 KB	Output is correct
15	Correct	5 ms	4216 KB	Output is correct
16	Correct	5 ms	4216 KB	Output is correct
17	Correct	5 ms	4216 KB	Output is correct
18	Correct	5 ms	4216 KB	Output is correct

Subtask #2

10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	4260 KB	Output is correct
2	Correct	5 ms	4216 KB	Output is correct
3	Correct	5 ms	4216 KB	Output is correct
4	Correct	5 ms	4216 KB	Output is correct
5	Correct	5 ms	4216 KB	Output is correct
6	Correct	5 ms	4216 KB	Output is correct
7	Correct	5 ms	4216 KB	Output is correct
8	Correct	5 ms	4216 KB	Output is correct
9	Correct	5 ms	4216 KB	Output is correct
10	Correct	5 ms	4216 KB	Output is correct
11	Correct	5 ms	4216 KB	Output is correct
12	Correct	5 ms	4216 KB	Output is correct
13	Correct	5 ms	4216 KB	Output is correct
14	Correct	5 ms	4216 KB	Output is correct
15	Correct	5 ms	4216 KB	Output is correct
16	Correct	5 ms	4216 KB	Output is correct
17	Correct	5 ms	4216 KB	Output is correct
18	Correct	5 ms	4216 KB	Output is correct
19	Correct	6 ms	4344 KB	Output is correct
20	Correct	5 ms	4344 KB	Output is correct
21	Correct	6 ms	4216 KB	Output is correct
22	Correct	6 ms	4316 KB	Output is correct
23	Correct	5 ms	4208 KB	Output is correct
24	Correct	6 ms	4220 KB	Output is correct
25	Correct	7 ms	4208 KB	Output is correct
26	Correct	5 ms	4216 KB	Output is correct
27	Correct	6 ms	4344 KB	Output is correct
28	Correct	5 ms	4216 KB	Output is correct
29	Correct	5 ms	4216 KB	Output is correct

Subtask #3

28.0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	5 ms	4260 KB	Output is correct
2	Correct	5 ms	4216 KB	Output is correct
3	Correct	5 ms	4216 KB	Output is correct
4	Correct	5 ms	4216 KB	Output is correct
5	Correct	5 ms	4216 KB	Output is correct
6	Correct	5 ms	4216 KB	Output is correct
7	Correct	5 ms	4216 KB	Output is correct
8	Correct	5 ms	4216 KB	Output is correct
9	Correct	5 ms	4216 KB	Output is correct
10	Correct	5 ms	4216 KB	Output is correct
11	Correct	5 ms	4216 KB	Output is correct
12	Correct	5 ms	4216 KB	Output is correct
13	Correct	5 ms	4216 KB	Output is correct
14	Correct	5 ms	4216 KB	Output is correct
15	Correct	5 ms	4216 KB	Output is correct
16	Correct	5 ms	4216 KB	Output is correct
17	Correct	5 ms	4216 KB	Output is correct
18	Correct	5 ms	4216 KB	Output is correct
19	Correct	6 ms	4344 KB	Output is correct
20	Correct	5 ms	4344 KB	Output is correct
21	Correct	6 ms	4216 KB	Output is correct
22	Correct	6 ms	4316 KB	Output is correct
23	Correct	5 ms	4208 KB	Output is correct
24	Correct	6 ms	4220 KB	Output is correct
25	Correct	7 ms	4208 KB	Output is correct
26	Correct	5 ms	4216 KB	Output is correct
27	Correct	6 ms	4344 KB	Output is correct
28	Correct	5 ms	4216 KB	Output is correct
29	Correct	5 ms	4216 KB	Output is correct
30	Correct	331 ms	42040 KB	Output is correct
31	Correct	315 ms	41996 KB	Output is correct
32	Correct	148 ms	22704 KB	Output is correct
33	Correct	244 ms	32360 KB	Output is correct
34	Correct	246 ms	32416 KB	Output is correct
35	Correct	283 ms	40664 KB	Output is correct
36	Correct	339 ms	41648 KB	Output is correct
37	Correct	394 ms	41944 KB	Output is correct
38	Correct	392 ms	42020 KB	Output is correct
39	Correct	393 ms	42040 KB	Output is correct
40	Correct	395 ms	42004 KB	Output is correct
41	Correct	320 ms	41980 KB	Output is correct
42	Correct	353 ms	42072 KB	Output is correct
43	Correct	264 ms	32432 KB	Output is correct

Subtask #4

0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	5 ms	4216 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	5 ms	4260 KB	Output is correct
2	Correct	5 ms	4216 KB	Output is correct
3	Correct	5 ms	4216 KB	Output is correct
4	Correct	5 ms	4216 KB	Output is correct
5	Correct	5 ms	4216 KB	Output is correct
6	Correct	5 ms	4216 KB	Output is correct
7	Correct	5 ms	4216 KB	Output is correct
8	Correct	5 ms	4216 KB	Output is correct
9	Correct	5 ms	4216 KB	Output is correct
10	Correct	5 ms	4216 KB	Output is correct
11	Correct	5 ms	4216 KB	Output is correct
12	Correct	5 ms	4216 KB	Output is correct
13	Correct	5 ms	4216 KB	Output is correct
14	Correct	5 ms	4216 KB	Output is correct
15	Correct	5 ms	4216 KB	Output is correct
16	Correct	5 ms	4216 KB	Output is correct
17	Correct	5 ms	4216 KB	Output is correct
18	Correct	5 ms	4216 KB	Output is correct
19	Correct	6 ms	4344 KB	Output is correct
20	Correct	5 ms	4344 KB	Output is correct
21	Correct	6 ms	4216 KB	Output is correct
22	Correct	6 ms	4316 KB	Output is correct
23	Correct	5 ms	4208 KB	Output is correct
24	Correct	6 ms	4220 KB	Output is correct
25	Correct	7 ms	4208 KB	Output is correct
26	Correct	5 ms	4216 KB	Output is correct
27	Correct	6 ms	4344 KB	Output is correct
28	Correct	5 ms	4216 KB	Output is correct
29	Correct	5 ms	4216 KB	Output is correct
30	Correct	331 ms	42040 KB	Output is correct
31	Correct	315 ms	41996 KB	Output is correct
32	Correct	148 ms	22704 KB	Output is correct
33	Correct	244 ms	32360 KB	Output is correct
34	Correct	246 ms	32416 KB	Output is correct
35	Correct	283 ms	40664 KB	Output is correct
36	Correct	339 ms	41648 KB	Output is correct
37	Correct	394 ms	41944 KB	Output is correct
38	Correct	392 ms	42020 KB	Output is correct
39	Correct	393 ms	42040 KB	Output is correct
40	Correct	395 ms	42004 KB	Output is correct
41	Correct	320 ms	41980 KB	Output is correct
42	Correct	353 ms	42072 KB	Output is correct
43	Correct	264 ms	32432 KB	Output is correct
44	Incorrect	5 ms	4216 KB	3rd lines differ - on the 1st token, expected: '3304', found: '2744'
45	Halted	0 ms	0 KB	-