Submission #65781

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
65781	2018-08-08T18:06:32 Z	MatheusLealV	Ancient Books (IOI17_books)	C++17	50 / 100	497 ms	112240 KB

books

#include "books.h"
#define N 1000005
#define f first
#define ss second
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;

ll ans = 0;

ll n, maior[N], menor[N], qtd = 0, ok[N], en;

int pai[N], peso[N];

int find(int x)
{
	if(x == pai[x]) return x;

	return pai[x] = find(pai[x]);
}

void join(int a, int b)
{
	a = find(a), b = find(b);

	if(a == b) return;

	if(peso[a] > peso[b]) pai[b] = a;

	else if(peso[a] < peso[b]) pai[a] = b;

	else pai[a] = b, peso[b] ++;
}

vector<int> g;

void dfs(ll x, ll &mx, ll &mn)
{
	mx = max(mx, maior[x]);

	if(ok[x]) return;

	ok[x] = 1;

	dfs(g[x], mx, mn);
}

ll minimum_walk(vector<int> p, int s)
{
	n = p.size();

	g = p;

	for(ll i = 0; i < n; i++) ans += abs(i - p[i]);

	for(int i = 0; i < n; i++) maior[i] = menor[i] = i;

	for(ll i = n - 1; i >= 0; i--)
	{
		if(p[i] != i)
		{
			en = i;

			break;
		}
	}

	vector<pii> sweep;

	for(int i = 0; i <= en; i++)
	{
		if(ok[i]) continue;

		dfs(i, maior[i], menor[i]);

		sweep.push_back({menor[i], maior[i]});
	}

	sort(sweep.begin(), sweep.end());

	for(int i = 0; i < (int)sweep.size(); i++) pai[i] = i;

	pii a = {-1, -1};

	for(int i = 0; i < (int)sweep.size(); i++)
	{
		auto b = sweep[i];


		if(b.f <= a.f) join(i, a.ss);

		a = max(a, {b.ss, i});

		//for(int j = 0; j < i; j++)
		//{
		//}
	}

	set<int> q;

	for(int i = 0; i < (int)sweep.size(); i++)
	{
		q.insert(find(i));
	}

	ll qtd = q.size();

	//cout<<q.size()<<"\n";

	return ans + 2*(qtd - 1);
}

Subtask #1

12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	3 ms	440 KB	Output is correct
3	Correct	3 ms	516 KB	Output is correct
4	Correct	2 ms	516 KB	Output is correct
5	Correct	2 ms	516 KB	Output is correct
6	Correct	3 ms	548 KB	Output is correct
7	Correct	2 ms	548 KB	Output is correct
8	Correct	2 ms	548 KB	Output is correct
9	Correct	3 ms	548 KB	Output is correct
10	Correct	3 ms	552 KB	Output is correct
11	Correct	2 ms	656 KB	Output is correct
12	Correct	2 ms	832 KB	Output is correct
13	Correct	2 ms	832 KB	Output is correct
14	Correct	2 ms	832 KB	Output is correct
15	Correct	2 ms	832 KB	Output is correct
16	Correct	2 ms	832 KB	Output is correct
17	Correct	2 ms	832 KB	Output is correct
18	Correct	2 ms	832 KB	Output is correct

Subtask #2

10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	3 ms	440 KB	Output is correct
3	Correct	3 ms	516 KB	Output is correct
4	Correct	2 ms	516 KB	Output is correct
5	Correct	2 ms	516 KB	Output is correct
6	Correct	3 ms	548 KB	Output is correct
7	Correct	2 ms	548 KB	Output is correct
8	Correct	2 ms	548 KB	Output is correct
9	Correct	3 ms	548 KB	Output is correct
10	Correct	3 ms	552 KB	Output is correct
11	Correct	2 ms	656 KB	Output is correct
12	Correct	2 ms	832 KB	Output is correct
13	Correct	2 ms	832 KB	Output is correct
14	Correct	2 ms	832 KB	Output is correct
15	Correct	2 ms	832 KB	Output is correct
16	Correct	2 ms	832 KB	Output is correct
17	Correct	2 ms	832 KB	Output is correct
18	Correct	2 ms	832 KB	Output is correct
19	Correct	3 ms	832 KB	Output is correct
20	Correct	2 ms	832 KB	Output is correct
21	Correct	2 ms	832 KB	Output is correct
22	Correct	3 ms	832 KB	Output is correct
23	Correct	3 ms	832 KB	Output is correct
24	Correct	2 ms	832 KB	Output is correct
25	Correct	3 ms	832 KB	Output is correct
26	Correct	2 ms	832 KB	Output is correct
27	Correct	3 ms	832 KB	Output is correct
28	Correct	2 ms	832 KB	Output is correct
29	Correct	3 ms	832 KB	Output is correct

Subtask #3

28.0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	3 ms	440 KB	Output is correct
3	Correct	3 ms	516 KB	Output is correct
4	Correct	2 ms	516 KB	Output is correct
5	Correct	2 ms	516 KB	Output is correct
6	Correct	3 ms	548 KB	Output is correct
7	Correct	2 ms	548 KB	Output is correct
8	Correct	2 ms	548 KB	Output is correct
9	Correct	3 ms	548 KB	Output is correct
10	Correct	3 ms	552 KB	Output is correct
11	Correct	2 ms	656 KB	Output is correct
12	Correct	2 ms	832 KB	Output is correct
13	Correct	2 ms	832 KB	Output is correct
14	Correct	2 ms	832 KB	Output is correct
15	Correct	2 ms	832 KB	Output is correct
16	Correct	2 ms	832 KB	Output is correct
17	Correct	2 ms	832 KB	Output is correct
18	Correct	2 ms	832 KB	Output is correct
19	Correct	3 ms	832 KB	Output is correct
20	Correct	2 ms	832 KB	Output is correct
21	Correct	2 ms	832 KB	Output is correct
22	Correct	3 ms	832 KB	Output is correct
23	Correct	3 ms	832 KB	Output is correct
24	Correct	2 ms	832 KB	Output is correct
25	Correct	3 ms	832 KB	Output is correct
26	Correct	2 ms	832 KB	Output is correct
27	Correct	3 ms	832 KB	Output is correct
28	Correct	2 ms	832 KB	Output is correct
29	Correct	3 ms	832 KB	Output is correct
30	Correct	316 ms	35780 KB	Output is correct
31	Correct	328 ms	35964 KB	Output is correct
32	Correct	204 ms	35964 KB	Output is correct
33	Correct	497 ms	76708 KB	Output is correct
34	Correct	448 ms	83432 KB	Output is correct
35	Correct	418 ms	83432 KB	Output is correct
36	Correct	291 ms	83432 KB	Output is correct
37	Correct	214 ms	83432 KB	Output is correct
38	Correct	198 ms	83432 KB	Output is correct
39	Correct	212 ms	83432 KB	Output is correct
40	Correct	208 ms	83432 KB	Output is correct
41	Correct	228 ms	89956 KB	Output is correct
42	Correct	236 ms	96700 KB	Output is correct
43	Correct	274 ms	112240 KB	Output is correct

Subtask #4

0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	2 ms	112240 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	2 ms	376 KB	Output is correct
2	Correct	3 ms	440 KB	Output is correct
3	Correct	3 ms	516 KB	Output is correct
4	Correct	2 ms	516 KB	Output is correct
5	Correct	2 ms	516 KB	Output is correct
6	Correct	3 ms	548 KB	Output is correct
7	Correct	2 ms	548 KB	Output is correct
8	Correct	2 ms	548 KB	Output is correct
9	Correct	3 ms	548 KB	Output is correct
10	Correct	3 ms	552 KB	Output is correct
11	Correct	2 ms	656 KB	Output is correct
12	Correct	2 ms	832 KB	Output is correct
13	Correct	2 ms	832 KB	Output is correct
14	Correct	2 ms	832 KB	Output is correct
15	Correct	2 ms	832 KB	Output is correct
16	Correct	2 ms	832 KB	Output is correct
17	Correct	2 ms	832 KB	Output is correct
18	Correct	2 ms	832 KB	Output is correct
19	Correct	3 ms	832 KB	Output is correct
20	Correct	2 ms	832 KB	Output is correct
21	Correct	2 ms	832 KB	Output is correct
22	Correct	3 ms	832 KB	Output is correct
23	Correct	3 ms	832 KB	Output is correct
24	Correct	2 ms	832 KB	Output is correct
25	Correct	3 ms	832 KB	Output is correct
26	Correct	2 ms	832 KB	Output is correct
27	Correct	3 ms	832 KB	Output is correct
28	Correct	2 ms	832 KB	Output is correct
29	Correct	3 ms	832 KB	Output is correct
30	Correct	316 ms	35780 KB	Output is correct
31	Correct	328 ms	35964 KB	Output is correct
32	Correct	204 ms	35964 KB	Output is correct
33	Correct	497 ms	76708 KB	Output is correct
34	Correct	448 ms	83432 KB	Output is correct
35	Correct	418 ms	83432 KB	Output is correct
36	Correct	291 ms	83432 KB	Output is correct
37	Correct	214 ms	83432 KB	Output is correct
38	Correct	198 ms	83432 KB	Output is correct
39	Correct	212 ms	83432 KB	Output is correct
40	Correct	208 ms	83432 KB	Output is correct
41	Correct	228 ms	89956 KB	Output is correct
42	Correct	236 ms	96700 KB	Output is correct
43	Correct	274 ms	112240 KB	Output is correct
44	Incorrect	2 ms	112240 KB	3rd lines differ - on the 1st token, expected: '3304', found: '2744'
45	Halted	0 ms	0 KB	-