답안 #1039155

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1039155	2024-07-30T13:52:35 Z	Soumya1	고대 책들 (IOI17_books)	C++17	70 / 100	2000 ms	26976 KB

books

#include "books.h"
#include <bits/stdc++.h>
using namespace std;
long long minimum_walk(std::vector<int> p, int s) {
	long long ans = 0;
	int n = p.size();
	for (int i = 0; i < n; i++) {
		ans += abs(i - p[i]);
	}
	vector<bool> vis(n);
	vector<int> mn(n, n), mx(n);
	for (int i = 0; i < n; i++) {
		if (vis[i]) continue;
		int cur = i;
		vector<int> all;
		while (!vis[cur]) {
			all.push_back(cur);
			vis[cur] = true;
			mn[i] = min(mn[i], cur);
			mx[i] = max(mx[i], cur);
			cur = p[cur];
		}
		for (int j : all) mn[j] = mn[i], mx[j] = mx[i];
	}
	int L = mn[s], R = mx[s], l = s, r = s;
	auto simulate = [&]() {
		while (L < l || r < R) {
			if (L < l) {
				L = min(L, mn[l]);
				R = max(R, mx[l]);
				l--;
			} else {
				L = min(L, mn[r]);
				R = max(R, mx[r]);
				r++;
			}
		}
	};
	int lto = 0, rto = n - 1;
	for (int i = 0; i < n; i++) {
		if (p[i] == i) lto++;
		else break;
	}
	for (int i = n - 1; i >= 0; i--) {
		if (p[i] == i) rto--;
		else break;
	}
	lto = min(lto, s);
	rto = max(rto, s);
	simulate();
	while (true) {
		bool first = false;
		int right_cost = 0;
		int m = r;
		for (int i = r + 1; i <= rto; i++) {
			if (mn[i] < l) {
				if (i > m) right_cost++;
				first = true;
				break;
			}
			if (mn[i] > m) right_cost++;
			m = max(m, mx[i]); 
		}
		bool second = false;
		int left_cost = 0;
		m = l;
		for (int i = l - 1; i >= lto; i--) {
			if (mx[i] > r) {
				if (i < m) left_cost++;
				second = true;
				break;
			}
			if (mx[i] < m) left_cost++;
			m = min(m, mn[i]);
		}
		if (!first) {
			ans += 2 * (left_cost + right_cost);
			break;
		}
		if (left_cost < right_cost) {
			ans += 2 * left_cost;
			for (int i = l + 1; i <= rto; i++) {
				L = min(L, mn[i]), R = max(R, mx[i]);
				if (mn[i] < l) break;
			}
			simulate();
		} else {
			ans += 2 * right_cost;
			for (int i = r - 1; i >= lto; i--) {
				L = min(L, mn[i]), R = max(R, mx[i]);
				if (mx[i] > r) break;
			}
			simulate();
		}
	}
	return ans;
}

Compilation message

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:64:8: warning: variable 'second' set but not used [-Wunused-but-set-variable]
   64 |   bool second = false;
      |        ^~~~~~

Subtask #1

12.0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 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	348 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	1 ms	348 KB	Output is correct
15	Correct	0 ms	604 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

#	결과	실행 시간	메모리	Grader output
1	Correct	0 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	348 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	1 ms	348 KB	Output is correct
15	Correct	0 ms	604 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	1 ms	348 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	1 ms	344 KB	Output is correct
23	Correct	0 ms	344 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	1 ms	344 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	0 ms	348 KB	Output is correct

Subtask #3

28.0 / 28.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 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	348 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	1 ms	348 KB	Output is correct
15	Correct	0 ms	604 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	1 ms	348 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	1 ms	344 KB	Output is correct
23	Correct	0 ms	344 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	1 ms	344 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	0 ms	348 KB	Output is correct
30	Correct	100 ms	26976 KB	Output is correct
31	Correct	108 ms	25040 KB	Output is correct
32	Correct	90 ms	23120 KB	Output is correct
33	Correct	93 ms	22872 KB	Output is correct
34	Correct	90 ms	22864 KB	Output is correct
35	Correct	93 ms	22900 KB	Output is correct
36	Correct	92 ms	22864 KB	Output is correct
37	Correct	78 ms	22884 KB	Output is correct
38	Correct	80 ms	22896 KB	Output is correct
39	Correct	83 ms	22888 KB	Output is correct
40	Correct	80 ms	23180 KB	Output is correct
41	Correct	98 ms	25868 KB	Output is correct
42	Correct	91 ms	24476 KB	Output is correct
43	Correct	96 ms	22864 KB	Output is correct

Subtask #4

20.0 / 20.0

#	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	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	1 ms	348 KB	Output is correct
9	Correct	1 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	436 KB	Output is correct
16	Correct	0 ms	600 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	1 ms	344 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct

Subtask #5

0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 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	348 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	1 ms	348 KB	Output is correct
15	Correct	0 ms	604 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	1 ms	348 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	1 ms	344 KB	Output is correct
23	Correct	0 ms	344 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	1 ms	344 KB	Output is correct
26	Correct	0 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	1 ms	348 KB	Output is correct
29	Correct	0 ms	348 KB	Output is correct
30	Correct	100 ms	26976 KB	Output is correct
31	Correct	108 ms	25040 KB	Output is correct
32	Correct	90 ms	23120 KB	Output is correct
33	Correct	93 ms	22872 KB	Output is correct
34	Correct	90 ms	22864 KB	Output is correct
35	Correct	93 ms	22900 KB	Output is correct
36	Correct	92 ms	22864 KB	Output is correct
37	Correct	78 ms	22884 KB	Output is correct
38	Correct	80 ms	22896 KB	Output is correct
39	Correct	83 ms	22888 KB	Output is correct
40	Correct	80 ms	23180 KB	Output is correct
41	Correct	98 ms	25868 KB	Output is correct
42	Correct	91 ms	24476 KB	Output is correct
43	Correct	96 ms	22864 KB	Output is correct
44	Correct	0 ms	344 KB	Output is correct
45	Correct	0 ms	348 KB	Output is correct
46	Correct	0 ms	348 KB	Output is correct
47	Correct	0 ms	348 KB	Output is correct
48	Correct	0 ms	348 KB	Output is correct
49	Correct	0 ms	348 KB	Output is correct
50	Correct	1 ms	348 KB	Output is correct
51	Correct	1 ms	348 KB	Output is correct
52	Correct	1 ms	348 KB	Output is correct
53	Correct	0 ms	348 KB	Output is correct
54	Correct	0 ms	348 KB	Output is correct
55	Correct	0 ms	348 KB	Output is correct
56	Correct	0 ms	348 KB	Output is correct
57	Correct	0 ms	348 KB	Output is correct
58	Correct	0 ms	436 KB	Output is correct
59	Correct	0 ms	600 KB	Output is correct
60	Correct	0 ms	348 KB	Output is correct
61	Correct	1 ms	344 KB	Output is correct
62	Correct	0 ms	348 KB	Output is correct
63	Correct	0 ms	348 KB	Output is correct
64	Correct	91 ms	22868 KB	Output is correct
65	Correct	92 ms	22892 KB	Output is correct
66	Correct	79 ms	22752 KB	Output is correct
67	Correct	81 ms	22872 KB	Output is correct
68	Correct	9 ms	2400 KB	Output is correct
69	Correct	9 ms	2488 KB	Output is correct
70	Correct	9 ms	2392 KB	Output is correct
71	Correct	9 ms	2608 KB	Output is correct
72	Correct	9 ms	2404 KB	Output is correct
73	Correct	8 ms	2660 KB	Output is correct
74	Correct	97 ms	22768 KB	Output is correct
75	Correct	109 ms	22752 KB	Output is correct
76	Correct	102 ms	22868 KB	Output is correct
77	Correct	96 ms	22864 KB	Output is correct
78	Correct	97 ms	22748 KB	Output is correct
79	Correct	99 ms	22868 KB	Output is correct
80	Correct	85 ms	22892 KB	Output is correct
81	Execution timed out	2025 ms	22864 KB	Time limit exceeded
82	Halted	0 ms	0 KB	-