oj.uz

Submission #1082991

# Submission time Handle Problem Language Result Execution time Memory
1082991 2024-09-02T09:41:25 Z happypotato Ancient Books (IOI17_books) C++17
50 / 100
 114 ms 26848 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);
		}
		// cerr << "seq: ";
		// for (int x : seq) cerr << x << ' ';
		// cerr << " | " << get.ff << ' ' << get.ss << endl;
		for (int j = 0; j < (int)(seq.size()); j++) {
			ans += abs(seq[(j + 1) % (int)(seq.size())] - seq[j]);
			range[seq[j]] = get;
			p[seq[j]] = -1;
		}
	}
	// for (int i = 0; i < n; i++) {
	// 	cerr << i << ": " << range[i].ff << ' ' << range[i].ss << endl;
	// }

	vector<vector<int>> dp(n);
	for (int i = 0; i < n; i++) dp[i].resize(n, 1e9);
	queue<pii> q;
	for (int i = range[s].ff; i <= range[s].ss; i++) {
		for (int j = i; j <= range[s].ss; j++) {
			dp[i][j] = 0;
			q.push({i, j});
		}
	}
	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);
			}
		}
	}
	int lb = 0, rb = n - 1;
	while (lb < n && ori[lb] == lb) lb++;
	if (lb == n) return 0;
	while (rb >= 0 && ori[rb] == rb) rb--;
	int take = 1e9;
	for (int i = 0; i <= lb; i++) {
		for (int j = rb; j < n; j++) take = min(take, dp[i][j]);
	}
	ans += take * 2;
	return ans;
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 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 0 ms 440 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 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 0 ms 348 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 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 0 ms 440 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 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 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 436 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 348 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 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 0 ms 440 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 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 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 436 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 348 KB Output is correct
30 Correct 98 ms 26820 KB Output is correct
31 Correct 114 ms 24800 KB Output is correct
32 Correct 77 ms 26816 KB Output is correct
33 Correct 94 ms 26832 KB Output is correct
34 Correct 92 ms 26848 KB Output is correct
35 Correct 101 ms 24800 KB Output is correct
36 Correct 94 ms 23772 KB Output is correct
37 Correct 110 ms 22864 KB Output is correct
38 Correct 82 ms 22748 KB Output is correct
39 Correct 83 ms 22864 KB Output is correct
40 Correct 87 ms 23192 KB Output is correct
41 Correct 101 ms 25868 KB Output is correct
42 Correct 98 ms 24440 KB Output is correct
43 Correct 98 ms 22620 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 4188 KB 3rd lines differ - on the 1st token, expected: '3304', found: '3312'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 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 0 ms 440 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 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 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 344 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 436 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 348 KB Output is correct
30 Correct 98 ms 26820 KB Output is correct
31 Correct 114 ms 24800 KB Output is correct
32 Correct 77 ms 26816 KB Output is correct
33 Correct 94 ms 26832 KB Output is correct
34 Correct 92 ms 26848 KB Output is correct
35 Correct 101 ms 24800 KB Output is correct
36 Correct 94 ms 23772 KB Output is correct
37 Correct 110 ms 22864 KB Output is correct
38 Correct 82 ms 22748 KB Output is correct
39 Correct 83 ms 22864 KB Output is correct
40 Correct 87 ms 23192 KB Output is correct
41 Correct 101 ms 25868 KB Output is correct
42 Correct 98 ms 24440 KB Output is correct
43 Correct 98 ms 22620 KB Output is correct
44 Incorrect 3 ms 4188 KB 3rd lines differ - on the 1st token, expected: '3304', found: '3312'
45 Halted 0 ms 0 KB -