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Submission #566604

# Submission time Handle Problem Language Result Execution time Memory
566604 2022-05-22T12:56:47 Z Temmie Ancient Books (IOI17_books) C++17
50 / 100
 561 ms 70780 KB 
//#include "public_c/public/cpp/books.h"
#include "books.h"

#include <bits/stdc++.h>

long long minimum_walk(std::vector <int> p, int s) {
	int n = p.size();
	std::vector <int> min(n, 1 << 30);
	std::vector <int> max(n, -1);
	std::vector <int> col(n, -1);
	for (int i = 0, cnt = 0; i < n; i++) {
		if (col[i] != -1) {
			continue;
		}
		int u = i;
		do {
			min[cnt] = std::min(min[cnt], u);
			max[cnt] = std::max(max[cnt], u);
			col[u] = cnt;
			u = p[u];
		} while (u != i);
		cnt++;
	}
	int l = 0, r = n - 1;
	while (l < s && l == p[l]) {
		l++;
	}
	while (r > s && r == p[r]) {
		r--;
	}
	std::set <int> st;
	for (int i = l; i <= r; i++) {
		st.insert(i);
	}
	int dr = 0;
	std::vector <int> dis(n, 1 << 30);
	std::deque <std::pair <int, int>> q;
	q.emplace_back(col[s], dis[col[s]] = 0);
	while (q.size()) {
		int v = q.front().first;
		int d = q.front().second;
		q.pop_front();
		if (d != dis[v]) {
			continue;
		}
		int mn = min[v];
		int mx = max[v];
		dr = s >= mn && s <= mx ? d : dr;
		while (true) {
			int u;
			auto it = st.lower_bound(mn);
			if (it == st.end() || (u = *it) > mx) {
				break;
			}
			st.erase(it);
			if (d < dis[col[u]]) {
				q.emplace_front(col[u], dis[col[u]] = d);
			}
		}
		if (v < r && d + 1 < dis[col[v + 1]]) {
			q.emplace_back(col[v + 1], dis[col[v + 1]] = d + 1);
		}
		if (v > l && d + 1 < dis[col[v - 1]]) {
			q.emplace_back(col[v - 1], dis[col[v - 1]] = d + 1);
		}
	}
	long long ans = 0;
	for (int i = l; i <= r; i++) {
		ans += abs(i - p[i]);
	}
	int cnt = 0;
	for (int i = l; i <= r; i++) {
		dr += !cnt && s < i;
		cnt += max[col[i]] == i;
		cnt -= min[col[i]] == i;
	}
	cnt = 0;
	for (int i = r; i >= l; i--) {
		dr += !cnt && s > i;
		cnt += max[col[i]] == i;
		cnt -= min[col[i]] == i;
	}
	return ans + dr * 2;
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 561 ms 70636 KB Output is correct
31 Correct 520 ms 70632 KB Output is correct
32 Correct 111 ms 23664 KB Output is correct
33 Correct 413 ms 70624 KB Output is correct
34 Correct 364 ms 70772 KB Output is correct
35 Correct 403 ms 70764 KB Output is correct
36 Correct 387 ms 70732 KB Output is correct
37 Correct 402 ms 70776 KB Output is correct
38 Correct 371 ms 70716 KB Output is correct
39 Correct 426 ms 70656 KB Output is correct
40 Correct 381 ms 70740 KB Output is correct
41 Correct 465 ms 70732 KB Output is correct
42 Correct 384 ms 70780 KB Output is correct
43 Correct 484 ms 70780 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 340 KB 3rd lines differ - on the 1st token, expected: '3304', found: '2766'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 561 ms 70636 KB Output is correct
31 Correct 520 ms 70632 KB Output is correct
32 Correct 111 ms 23664 KB Output is correct
33 Correct 413 ms 70624 KB Output is correct
34 Correct 364 ms 70772 KB Output is correct
35 Correct 403 ms 70764 KB Output is correct
36 Correct 387 ms 70732 KB Output is correct
37 Correct 402 ms 70776 KB Output is correct
38 Correct 371 ms 70716 KB Output is correct
39 Correct 426 ms 70656 KB Output is correct
40 Correct 381 ms 70740 KB Output is correct
41 Correct 465 ms 70732 KB Output is correct
42 Correct 384 ms 70780 KB Output is correct
43 Correct 484 ms 70780 KB Output is correct
44 Incorrect 1 ms 340 KB 3rd lines differ - on the 1st token, expected: '3304', found: '2766'
45 Halted 0 ms 0 KB -