Submission #768558

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
768558	2023-06-28T09:05:30 Z	SanguineChameleon	Ancient Books (IOI17_books)	C++17	100 / 100	157 ms	22672 KB

books

#include "books.h"
#include <bits/stdc++.h>
using namespace std;

const int maxN = 1e6 + 20;
int cycleL[maxN];
int cycleR[maxN];

void extend(int &curL, int &curR) {
	int nxtL = min(curL, min(cycleL[curL], cycleL[curR]));
	int nxtR = max(curR, max(cycleR[curL], cycleR[curR]));
	while (curL > nxtL || curR < nxtR) {
		if (curL > nxtL) {
			curL--;
			nxtL = min(nxtL, cycleL[curL]);
			nxtR = max(nxtR, cycleR[curL]);
		}
		else {
			curR++;
			nxtL = min(nxtL, cycleL[curR]);
			nxtR = max(nxtR, cycleR[curR]);
		}
	}
}

long long minimum_walk(vector<int> A, int start) {
	int N = A.size();
	for (int i = 0; i < N; i++) {
		cycleL[i] = -1;
		cycleR[i] = -1;
	}
	int curL = start;
	int curR = start;
	int endL = start;
	int endR = start;
	long long res = 0;
	for (int i = 0; i < N; i++) {
		if (i != A[i]) {
			endL = min(endL, i);
			endR = max(endR, i);
		}
		res += abs(A[i] - i);
		if (cycleL[i] == -1) {
			int L = i;
			int R = i;
			int cur = i;
			do {
				L = min(L, cur);
				R = max(R, cur);
				cur = A[cur];
			}
			while (cur != i);
			cur = i;
			do {
				cycleL[cur] = L;
				cycleR[cur] = R;
				cur = A[cur];
			}
			while (cur != i);
		}
	}
	while (curL > endL || curR < endR) {
		extend(curL, curR);
		int costL = 0;
		int nxtLL = curL;
		int nxtLR = curR;
		while (nxtLL > endL && nxtLR == curR) {
			nxtLL--;
			costL += 2;
			extend(nxtLL, nxtLR);
		}
		int costR = 0;
		int nxtRL = curL;
		int nxtRR = curR;
		while (nxtRR < endR && nxtRL == curL) {
			nxtRR++;
			costR += 2;
			extend(nxtRL, nxtRR);
		}
		if (nxtLR == curR && nxtRL == curL) {
			res += costL + costR;
		}
		else {
			res += min(costL, costR);
		}
		curL = min(nxtLL, nxtRL);
		curR = max(nxtLR, nxtRR);
	}
	return res;
}

Subtask #1
12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	1 ms	212 KB	Output is correct
22	Correct	1 ms	212 KB	Output is correct
23	Correct	0 ms	212 KB	Output is correct
24	Correct	0 ms	212 KB	Output is correct
25	Correct	0 ms	212 KB	Output is correct
26	Correct	0 ms	212 KB	Output is correct
27	Correct	0 ms	212 KB	Output is correct
28	Correct	0 ms	212 KB	Output is correct
29	Correct	0 ms	212 KB	Output is correct

Subtask #3
28.0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	1 ms	212 KB	Output is correct
22	Correct	1 ms	212 KB	Output is correct
23	Correct	0 ms	212 KB	Output is correct
24	Correct	0 ms	212 KB	Output is correct
25	Correct	0 ms	212 KB	Output is correct
26	Correct	0 ms	212 KB	Output is correct
27	Correct	0 ms	212 KB	Output is correct
28	Correct	0 ms	212 KB	Output is correct
29	Correct	0 ms	212 KB	Output is correct
30	Correct	119 ms	15948 KB	Output is correct
31	Correct	157 ms	15872 KB	Output is correct
32	Correct	75 ms	15860 KB	Output is correct
33	Correct	85 ms	15864 KB	Output is correct
34	Correct	100 ms	15820 KB	Output is correct
35	Correct	92 ms	15860 KB	Output is correct
36	Correct	83 ms	15872 KB	Output is correct
37	Correct	89 ms	15876 KB	Output is correct
38	Correct	81 ms	15868 KB	Output is correct
39	Correct	84 ms	15872 KB	Output is correct
40	Correct	92 ms	15868 KB	Output is correct
41	Correct	111 ms	15868 KB	Output is correct
42	Correct	105 ms	15940 KB	Output is correct
43	Correct	81 ms	15868 KB	Output is correct

Subtask #4
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	0 ms	212 KB	Output is correct
6	Correct	1 ms	212 KB	Output is correct
7	Correct	1 ms	212 KB	Output is correct
8	Correct	1 ms	212 KB	Output is correct
9	Correct	1 ms	212 KB	Output is correct
10	Correct	1 ms	212 KB	Output is correct
11	Correct	1 ms	340 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	1 ms	212 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	1 ms	212 KB	Output is correct
17	Correct	1 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct
19	Correct	1 ms	212 KB	Output is correct
20	Correct	1 ms	212 KB	Output is correct

Subtask #5
30.0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	212 KB	Output is correct
2	Correct	0 ms	212 KB	Output is correct
3	Correct	1 ms	212 KB	Output is correct
4	Correct	0 ms	212 KB	Output is correct
5	Correct	1 ms	212 KB	Output is correct
6	Correct	0 ms	212 KB	Output is correct
7	Correct	0 ms	212 KB	Output is correct
8	Correct	0 ms	212 KB	Output is correct
9	Correct	0 ms	212 KB	Output is correct
10	Correct	0 ms	212 KB	Output is correct
11	Correct	0 ms	212 KB	Output is correct
12	Correct	0 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	0 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	212 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	1 ms	212 KB	Output is correct
19	Correct	0 ms	212 KB	Output is correct
20	Correct	0 ms	212 KB	Output is correct
21	Correct	1 ms	212 KB	Output is correct
22	Correct	1 ms	212 KB	Output is correct
23	Correct	0 ms	212 KB	Output is correct
24	Correct	0 ms	212 KB	Output is correct
25	Correct	0 ms	212 KB	Output is correct
26	Correct	0 ms	212 KB	Output is correct
27	Correct	0 ms	212 KB	Output is correct
28	Correct	0 ms	212 KB	Output is correct
29	Correct	0 ms	212 KB	Output is correct
30	Correct	119 ms	15948 KB	Output is correct
31	Correct	157 ms	15872 KB	Output is correct
32	Correct	75 ms	15860 KB	Output is correct
33	Correct	85 ms	15864 KB	Output is correct
34	Correct	100 ms	15820 KB	Output is correct
35	Correct	92 ms	15860 KB	Output is correct
36	Correct	83 ms	15872 KB	Output is correct
37	Correct	89 ms	15876 KB	Output is correct
38	Correct	81 ms	15868 KB	Output is correct
39	Correct	84 ms	15872 KB	Output is correct
40	Correct	92 ms	15868 KB	Output is correct
41	Correct	111 ms	15868 KB	Output is correct
42	Correct	105 ms	15940 KB	Output is correct
43	Correct	81 ms	15868 KB	Output is correct
44	Correct	0 ms	212 KB	Output is correct
45	Correct	0 ms	212 KB	Output is correct
46	Correct	1 ms	212 KB	Output is correct
47	Correct	0 ms	212 KB	Output is correct
48	Correct	0 ms	212 KB	Output is correct
49	Correct	1 ms	212 KB	Output is correct
50	Correct	1 ms	212 KB	Output is correct
51	Correct	1 ms	212 KB	Output is correct
52	Correct	1 ms	212 KB	Output is correct
53	Correct	1 ms	212 KB	Output is correct
54	Correct	1 ms	340 KB	Output is correct
55	Correct	1 ms	212 KB	Output is correct
56	Correct	1 ms	212 KB	Output is correct
57	Correct	0 ms	212 KB	Output is correct
58	Correct	0 ms	212 KB	Output is correct
59	Correct	1 ms	212 KB	Output is correct
60	Correct	1 ms	212 KB	Output is correct
61	Correct	0 ms	212 KB	Output is correct
62	Correct	1 ms	212 KB	Output is correct
63	Correct	1 ms	212 KB	Output is correct
64	Correct	85 ms	22672 KB	Output is correct
65	Correct	83 ms	22628 KB	Output is correct
66	Correct	84 ms	22628 KB	Output is correct
67	Correct	83 ms	22624 KB	Output is correct
68	Correct	9 ms	2352 KB	Output is correct
69	Correct	9 ms	2388 KB	Output is correct
70	Correct	12 ms	2388 KB	Output is correct
71	Correct	10 ms	2388 KB	Output is correct
72	Correct	8 ms	2388 KB	Output is correct
73	Correct	9 ms	2476 KB	Output is correct
74	Correct	86 ms	22624 KB	Output is correct
75	Correct	87 ms	22588 KB	Output is correct
76	Correct	85 ms	22672 KB	Output is correct
77	Correct	85 ms	22640 KB	Output is correct
78	Correct	93 ms	22636 KB	Output is correct
79	Correct	85 ms	22668 KB	Output is correct
80	Correct	75 ms	22632 KB	Output is correct
81	Correct	83 ms	22624 KB	Output is correct
82	Correct	91 ms	22624 KB	Output is correct
83	Correct	86 ms	22624 KB	Output is correct
84	Correct	85 ms	22604 KB	Output is correct
85	Correct	83 ms	22644 KB	Output is correct
86	Correct	90 ms	22672 KB	Output is correct
87	Correct	91 ms	22640 KB	Output is correct
88	Correct	87 ms	22636 KB	Output is correct
89	Correct	90 ms	22640 KB	Output is correct
90	Correct	83 ms	22644 KB	Output is correct
91	Correct	95 ms	22672 KB	Output is correct
92	Correct	93 ms	22624 KB	Output is correct

Submission #768558

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