답안 #1083008

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1083008	2024-09-02T09:49:12 Z	happypotato	고대 책들 (IOI17_books)	C++17	50 / 100	103 ms	20168 KB

books

#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);
	deque<pii> dq;
	dp[range[s].ff][range[s].ss] = 0;
	dq.push_back(range[s]);
	while (!dq.empty()) {
		pii cur = dq.front(); dq.pop_front();
		pii nrange;
		if (cur.ff < n - 1) {
			nrange = {cur.ff + 1, cur.ss};
			if (dp[nrange.ff][nrange.ss] > dp[cur.ff][cur.ss]) {
				dp[nrange.ff][nrange.ss] = dp[cur.ff][cur.ss];
				dq.push_front(nrange);
			}
		}
		if (cur.ss > 0) {
			nrange = {cur.ff, cur.ss - 1};
			if (dp[nrange.ff][nrange.ss] > dp[cur.ff][cur.ss]) {
				dp[nrange.ff][nrange.ss] = dp[cur.ff][cur.ss];
				dq.push_front(nrange);
			}
		}
		if (cur.ff > 0) {
			nrange = {cur.ff - 1, cur.ss};
			if (dp[nrange.ff][nrange.ss] > dp[cur.ff][cur.ss] + 1) {
				dp[nrange.ff][nrange.ss] = dp[cur.ff][cur.ss] + 1;
				dq.push_back(nrange);
			}
		}
		if (cur.ss < n - 1) {
			nrange = {cur.ff + 1, cur.ss};
			if (dp[nrange.ff][nrange.ss] > dp[cur.ff][cur.ss] + 1) {
				dp[nrange.ff][nrange.ss] = dp[cur.ff][cur.ss] + 1;
				dq.push_back(nrange);
			}
		}
		nrange = {min(cur.ff, range[cur.ff].ff), max(cur.ss, range[cur.ff].ss)};
		if (dp[nrange.ff][nrange.ss] > dp[cur.ff][cur.ss]) {
			dp[nrange.ff][nrange.ss] = dp[cur.ff][cur.ss];
			dq.push_front(nrange);
		}
		nrange = {min(cur.ff, range[cur.ss].ff), max(cur.ss, range[cur.ss].ss)};
		if (dp[nrange.ff][nrange.ss] > dp[cur.ff][cur.ss]) {
			dp[nrange.ff][nrange.ss] = dp[cur.ff][cur.ss];
			dq.push_front(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

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 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	344 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	1 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	376 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	600 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct

Subtask #2

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 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	344 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	1 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	376 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	600 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	1 ms	344 KB	Output is correct
21	Correct	1 ms	344 KB	Output is correct
22	Correct	1 ms	348 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	0 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	1 ms	348 KB	Output is correct
28	Correct	1 ms	344 KB	Output is correct
29	Correct	1 ms	504 KB	Output is correct

Subtask #3

28.0 / 28.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 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	344 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	1 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	376 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	600 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	1 ms	344 KB	Output is correct
21	Correct	1 ms	344 KB	Output is correct
22	Correct	1 ms	348 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	0 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	1 ms	348 KB	Output is correct
28	Correct	1 ms	344 KB	Output is correct
29	Correct	1 ms	504 KB	Output is correct
30	Correct	103 ms	20080 KB	Output is correct
31	Correct	98 ms	18116 KB	Output is correct
32	Correct	71 ms	20160 KB	Output is correct
33	Correct	89 ms	20080 KB	Output is correct
34	Correct	96 ms	20168 KB	Output is correct
35	Correct	101 ms	18116 KB	Output is correct
36	Correct	89 ms	16996 KB	Output is correct
37	Correct	76 ms	16128 KB	Output is correct
38	Correct	77 ms	15956 KB	Output is correct
39	Correct	77 ms	15956 KB	Output is correct
40	Correct	84 ms	16268 KB	Output is correct
41	Correct	96 ms	18956 KB	Output is correct
42	Correct	88 ms	17532 KB	Output is correct
43	Correct	92 ms	15956 KB	Output is correct

Subtask #4

0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Runtime error	8 ms	10584 KB	Execution killed with signal 11
2	Halted	0 ms	0 KB	-

Subtask #5

0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 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	344 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	1 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	376 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	0 ms	348 KB	Output is correct
17	Correct	1 ms	600 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	1 ms	348 KB	Output is correct
20	Correct	1 ms	344 KB	Output is correct
21	Correct	1 ms	344 KB	Output is correct
22	Correct	1 ms	348 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	0 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	1 ms	348 KB	Output is correct
28	Correct	1 ms	344 KB	Output is correct
29	Correct	1 ms	504 KB	Output is correct
30	Correct	103 ms	20080 KB	Output is correct
31	Correct	98 ms	18116 KB	Output is correct
32	Correct	71 ms	20160 KB	Output is correct
33	Correct	89 ms	20080 KB	Output is correct
34	Correct	96 ms	20168 KB	Output is correct
35	Correct	101 ms	18116 KB	Output is correct
36	Correct	89 ms	16996 KB	Output is correct
37	Correct	76 ms	16128 KB	Output is correct
38	Correct	77 ms	15956 KB	Output is correct
39	Correct	77 ms	15956 KB	Output is correct
40	Correct	84 ms	16268 KB	Output is correct
41	Correct	96 ms	18956 KB	Output is correct
42	Correct	88 ms	17532 KB	Output is correct
43	Correct	92 ms	15956 KB	Output is correct
44	Runtime error	8 ms	10584 KB	Execution killed with signal 11
45	Halted	0 ms	0 KB	-