Submission #1053136

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1053136	2024-08-11T09:05:27 Z	abczz	Ancient Books (IOI17_books)	C++17	100 / 100	89 ms	25280 KB

books

#include "books.h"
#include <iostream>
#define ll long long

using namespace std;

bool ok = 0;
vector <ll> p;
ll n, l, r, x, y, qx, qy, ql, qr, a, b, f = 0, mn = 0, mx = 0;
void branch() {
	while (true) {
		for	(int i=x; i>=qx; --i) {
			qx = min(qx, p[i]);
			qy = max(qy, p[i]);
		}
		for (int i=y; i<=qy; ++i) {
			qx = min(qx, p[i]);
			qy = max(qy, p[i]);
		}
		if (x == qx && y == qy) break;
		x = qx, y = qy;
	}
}
long long minimum_walk(std::vector<int> A, int s) {
	for (auto u : A) p.push_back(u);
	n = p.size();
	for (int i=0; i<n; ++i) {
		f += abs(i-p[i]);
	}
	l = n, r = -1;
	for (int i=0; i<n; ++i) {
		if (p[i] != i) {
			l = i;
			break;
		}
	}
	for (int i=n-1; i>=0; --i) {
		if (p[i] != i) {
			r = i;
			break;
		}
	}
	if (l == n) return 0;
	x = y = qx = qy = s;
	branch();
	while (true) {
		ok = a = b = 0;
		mn = 1e18, mx = -1e18;
		for (int i=x-1; i>=l; --i) {
			qx = i;
			mn = min(mn, (ll)p[i]);
			if (p[i] > y) {
				a += 2;
				ok = 1;
				break;
			}
			if (mn == i) a += 2;
		}
		for (int i=y+1; i<=r; ++i) {
			qy = i;
			mx = max(mx, (ll)p[i]);
			if (p[i] < x) {
				b += 2;
				break;
			}
			if (mx == i) b += 2;
		}
		if (!ok) {
			f += a + b;
			break;
		}
		else {
			f += min(a, b);
			branch();
		}
	}
	return f;
}

Compilation message

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:47:10: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
   47 |   ok = a = b = 0;
      |        ~~^~~~~~~

Subtask #1
12.0 / 12.0

#	Verdict	Memory	Grader output
1	Correct	344 KB	Output is correct
2	Correct	348 KB	Output is correct
3	Correct	348 KB	Output is correct
4	Correct	348 KB	Output is correct
5	Correct	348 KB	Output is correct
6	Correct	348 KB	Output is correct
7	Correct	348 KB	Output is correct
8	Correct	348 KB	Output is correct
9	Correct	348 KB	Output is correct
10	Correct	348 KB	Output is correct
11	Correct	348 KB	Output is correct
12	Correct	348 KB	Output is correct
13	Correct	348 KB	Output is correct
14	Correct	348 KB	Output is correct
15	Correct	348 KB	Output is correct
16	Correct	348 KB	Output is correct
17	Correct	348 KB	Output is correct
18	Correct	348 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	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	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	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	0 ms	348 KB	Output is correct
23	Correct	0 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	0 ms	348 KB	Output is correct
28	Correct	0 ms	348 KB	Output is correct
29	Correct	0 ms	348 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	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	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	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	0 ms	348 KB	Output is correct
23	Correct	0 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	0 ms	348 KB	Output is correct
28	Correct	0 ms	348 KB	Output is correct
29	Correct	0 ms	348 KB	Output is correct
30	Correct	72 ms	24508 KB	Output is correct
31	Correct	61 ms	23744 KB	Output is correct
32	Correct	60 ms	23848 KB	Output is correct
33	Correct	61 ms	24256 KB	Output is correct
34	Correct	60 ms	23388 KB	Output is correct
35	Correct	66 ms	23996 KB	Output is correct
36	Correct	61 ms	25276 KB	Output is correct
37	Correct	78 ms	25160 KB	Output is correct
38	Correct	64 ms	24252 KB	Output is correct
39	Correct	60 ms	24764 KB	Output is correct
40	Correct	58 ms	25280 KB	Output is correct
41	Correct	59 ms	24012 KB	Output is correct
42	Correct	60 ms	23740 KB	Output is correct
43	Correct	59 ms	24256 KB	Output is correct

Subtask #4
20.0 / 20.0

#	Verdict	Memory	Grader output
1	Correct	348 KB	Output is correct
2	Correct	348 KB	Output is correct
3	Correct	348 KB	Output is correct
4	Correct	348 KB	Output is correct
5	Correct	348 KB	Output is correct
6	Correct	348 KB	Output is correct
7	Correct	348 KB	Output is correct
8	Correct	348 KB	Output is correct
9	Correct	348 KB	Output is correct
10	Correct	348 KB	Output is correct
11	Correct	348 KB	Output is correct
12	Correct	348 KB	Output is correct
13	Correct	604 KB	Output is correct
14	Correct	348 KB	Output is correct
15	Correct	348 KB	Output is correct
16	Correct	348 KB	Output is correct
17	Correct	348 KB	Output is correct
18	Correct	444 KB	Output is correct
19	Correct	348 KB	Output is correct
20	Correct	348 KB	Output is correct

Subtask #5
30.0 / 30.0

#	Verdict	Execution time	Memory	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	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	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	0 ms	348 KB	Output is correct
23	Correct	0 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	0 ms	348 KB	Output is correct
28	Correct	0 ms	348 KB	Output is correct
29	Correct	0 ms	348 KB	Output is correct
30	Correct	72 ms	24508 KB	Output is correct
31	Correct	61 ms	23744 KB	Output is correct
32	Correct	60 ms	23848 KB	Output is correct
33	Correct	61 ms	24256 KB	Output is correct
34	Correct	60 ms	23388 KB	Output is correct
35	Correct	66 ms	23996 KB	Output is correct
36	Correct	61 ms	25276 KB	Output is correct
37	Correct	78 ms	25160 KB	Output is correct
38	Correct	64 ms	24252 KB	Output is correct
39	Correct	60 ms	24764 KB	Output is correct
40	Correct	58 ms	25280 KB	Output is correct
41	Correct	59 ms	24012 KB	Output is correct
42	Correct	60 ms	23740 KB	Output is correct
43	Correct	59 ms	24256 KB	Output is correct
44	Correct	0 ms	348 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	0 ms	348 KB	Output is correct
51	Correct	0 ms	348 KB	Output is correct
52	Correct	0 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	604 KB	Output is correct
57	Correct	0 ms	348 KB	Output is correct
58	Correct	0 ms	348 KB	Output is correct
59	Correct	0 ms	348 KB	Output is correct
60	Correct	0 ms	348 KB	Output is correct
61	Correct	0 ms	444 KB	Output is correct
62	Correct	0 ms	348 KB	Output is correct
63	Correct	0 ms	348 KB	Output is correct
64	Correct	63 ms	24268 KB	Output is correct
65	Correct	64 ms	24768 KB	Output is correct
66	Correct	66 ms	24764 KB	Output is correct
67	Correct	61 ms	23380 KB	Output is correct
68	Correct	7 ms	2768 KB	Output is correct
69	Correct	7 ms	2856 KB	Output is correct
70	Correct	6 ms	2852 KB	Output is correct
71	Correct	6 ms	2772 KB	Output is correct
72	Correct	7 ms	2772 KB	Output is correct
73	Correct	6 ms	2772 KB	Output is correct
74	Correct	61 ms	23776 KB	Output is correct
75	Correct	88 ms	23484 KB	Output is correct
76	Correct	57 ms	23768 KB	Output is correct
77	Correct	69 ms	23488 KB	Output is correct
78	Correct	63 ms	24660 KB	Output is correct
79	Correct	65 ms	23772 KB	Output is correct
80	Correct	59 ms	23908 KB	Output is correct
81	Correct	89 ms	23900 KB	Output is correct
82	Correct	68 ms	24764 KB	Output is correct
83	Correct	59 ms	23996 KB	Output is correct
84	Correct	59 ms	24164 KB	Output is correct
85	Correct	68 ms	24796 KB	Output is correct
86	Correct	61 ms	23996 KB	Output is correct
87	Correct	64 ms	24508 KB	Output is correct
88	Correct	62 ms	23656 KB	Output is correct
89	Correct	88 ms	25184 KB	Output is correct
90	Correct	66 ms	24916 KB	Output is correct
91	Correct	67 ms	25056 KB	Output is correct
92	Correct	64 ms	24768 KB	Output is correct

Submission #1053136

Compilation message

Subtask #1 12.0 / 12.0

Subtask #2 10.0 / 10.0

Subtask #3 28.0 / 28.0

Subtask #4 20.0 / 20.0

Subtask #5 30.0 / 30.0

Subtask #1
12.0 / 12.0

Subtask #2
10.0 / 10.0

Subtask #3
28.0 / 28.0

Subtask #4
20.0 / 20.0

Subtask #5
30.0 / 30.0