oj.uz

Submission #1082962

# Submission time Handle Problem Language Result Execution time Memory
1082962 2024-09-02T08:53:58 Z happypotato Ancient Books (IOI17_books) C++17
50 / 100
 139 ms 26960 KB 
#include "books.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int, int>
#define ff first
#define ss second
#define pb push_back
long long st123(vector<int> p, int s) {
	vector<int> ori = p;
	int n = (int)(p.size());
	ll ans = 0;
	for (int i = 0; i < n; i++) {
		if (p[i] == -1 || p[i] == i) continue;
		int cur = i;
		vector<int> seq = {cur};
		while (p[cur] != i) {
			cur = p[cur];
			seq.pb(cur);
		}
		// cerr << i << ": ";
		// for (int x : seq) cerr << x << ' ';
		// cerr << endl;
		for (int i = 0; i < (int)(seq.size()); i++) {
			ans += abs(seq[(i + 1) % (int)(seq.size())] - seq[i]);
			p[seq[i]] = -1;
		}
	}
	vector<int> bruh;
	int maxi = 0;
	for (int i = 0; i < n; i++) {
		maxi = max(maxi, ori[i]);
		if (maxi == i) bruh.pb(i);
	}
	// for (int x : bruh) cerr << x << ' ';
	// cerr << endl;
	while (bruh.size() >= 2) {
		int x = bruh.size();
		if (bruh[x - 1] - bruh[x - 2] == 1) {
			bruh.pop_back();
		} else break;
	}
	ans += ((int)(bruh.size()) - 1) * 2;
	return ans;
}
long long minimum_walk(vector<int> p, int s) {
	if (s == 0) return st123(p, s);
	vector<int> ori = p;
	int n = (int)(p.size());
	ll ans = 0;
	vector<pii> range(n);
	for (int i = 0; i < n; i++) {
		if (p[i] == -1) continue;
		int cur = i;
		vector<int> seq = {cur};
		while (p[cur] != i) {
			cur = p[cur];
			seq.pb(cur);
		}
		pii get = {i, i};
		for (int x : seq) {
			get.ff = min(get.ff, x);
			get.ss = max(get.ss, x);
		}
		for (int i = 0; i < (int)(seq.size()); i++) {
			ans += abs(seq[(i + 1) % (int)(seq.size())] - seq[i]);
			range[seq[i]] = get;
			p[seq[i]] = -1;
		}
	}

	assert(n <= 1000);
	vector<vector<int>> dp(n);
	for (int i = 0; i < n; i++) dp[i].resize(n, 1e9);
	dp[range[s].ff][range[s].ss] = 0;
	queue<pii> q;
	q.push(range[s]);
	while (!q.empty()) {
		pii cur = q.front(); q.pop();
		if (cur.ff > 0) {
			pii nrange = {range[cur.ff - 1].ff, max(cur.ss, range[cur.ff - 1].ss)};
			if (dp[nrange.ff][nrange.ss] > dp[cur.ff][cur.ss] + 1) {
				dp[nrange.ff][nrange.ss] = dp[cur.ff][cur.ss] + 1;
				q.push(nrange);
			}
		}
		if (cur.ss < n - 1) {
			pii nrange = {min(cur.ff, range[cur.ss + 1].ff), range[cur.ss + 1].ss};
			if (dp[nrange.ff][nrange.ss] > dp[cur.ff][cur.ss] + 1) {
				dp[nrange.ff][nrange.ss] = dp[cur.ff][cur.ss] + 1;
				q.push(nrange);
			}
		}
	}
	ans += dp[0][n - 1] * 2;
	return ans;
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 432 KB Output is correct
9 Correct 0 ms 600 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 432 KB Output is correct
9 Correct 0 ms 600 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 1 ms 344 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 432 KB Output is correct
9 Correct 0 ms 600 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 139 ms 26820 KB Output is correct
31 Correct 100 ms 24796 KB Output is correct
32 Correct 77 ms 26852 KB Output is correct
33 Correct 90 ms 26960 KB Output is correct
34 Correct 94 ms 26820 KB Output is correct
35 Correct 94 ms 24804 KB Output is correct
36 Correct 89 ms 23756 KB Output is correct
37 Correct 96 ms 22624 KB Output is correct
38 Correct 89 ms 22612 KB Output is correct
39 Correct 79 ms 22768 KB Output is correct
40 Correct 99 ms 23180 KB Output is correct
41 Correct 96 ms 25864 KB Output is correct
42 Correct 95 ms 24440 KB Output is correct
43 Correct 87 ms 22608 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 4188 KB 3rd lines differ - on the 1st token, expected: '3304', found: '3314'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 432 KB Output is correct
9 Correct 0 ms 600 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 1 ms 344 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 1 ms 344 KB Output is correct
30 Correct 139 ms 26820 KB Output is correct
31 Correct 100 ms 24796 KB Output is correct
32 Correct 77 ms 26852 KB Output is correct
33 Correct 90 ms 26960 KB Output is correct
34 Correct 94 ms 26820 KB Output is correct
35 Correct 94 ms 24804 KB Output is correct
36 Correct 89 ms 23756 KB Output is correct
37 Correct 96 ms 22624 KB Output is correct
38 Correct 89 ms 22612 KB Output is correct
39 Correct 79 ms 22768 KB Output is correct
40 Correct 99 ms 23180 KB Output is correct
41 Correct 96 ms 25864 KB Output is correct
42 Correct 95 ms 24440 KB Output is correct
43 Correct 87 ms 22608 KB Output is correct
44 Incorrect 5 ms 4188 KB 3rd lines differ - on the 1st token, expected: '3304', found: '3314'
45 Halted 0 ms 0 KB -