Submission #105225

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
105225	2019-04-11T03:13:59 Z	bert30702	Ancient Books (IOI17_books)	C++17	50 / 100	222 ms	12168 KB

books

#include <bits/stdc++.h>
#include "books.h"
using namespace std;
const int MX = 1e6 + 100;
int G[MX];
long long minimum_walk(vector<int> p, int s) {
	while(p.back() == p.size() - 1 and p.back() != s) p.pop_back();
	int n = p.size();
	long long sum = 0;
	for(int i = 0; i < n; i ++) {
		G[p[i]] = max(G[p[i]], i);
		G[i]    = max(G[i], p[i]);
		sum += abs(i - p[i]);
	}
	for(int i = 0; i + 1 < n; i ++) {
		if(p[i] == i and i < s) continue;
		int ptr = i + 1;
		while(ptr <= G[i]) {
			G[i] = max(G[i], G[ptr]);
			ptr ++;
		}
		if(ptr < n) sum += 2;
		i = ptr - 1;
	}
	return sum;
}
//main () {
//	cout << minimum_walk({2, 3, 0, 1}, 0);
//}

Compilation message

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:7:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while(p.back() == p.size() - 1 and p.back() != s) p.pop_back();
        ~~~~~~~~~^~~~~~~~~~~~~~~

Subtask #1

12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	384 KB	Output is correct
2	Correct	4 ms	384 KB	Output is correct
3	Correct	3 ms	384 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	256 KB	Output is correct
6	Correct	3 ms	256 KB	Output is correct
7	Correct	2 ms	332 KB	Output is correct
8	Correct	3 ms	384 KB	Output is correct
9	Correct	2 ms	256 KB	Output is correct
10	Correct	2 ms	256 KB	Output is correct
11	Correct	2 ms	256 KB	Output is correct
12	Correct	3 ms	384 KB	Output is correct
13	Correct	3 ms	384 KB	Output is correct
14	Correct	2 ms	384 KB	Output is correct
15	Correct	2 ms	256 KB	Output is correct
16	Correct	2 ms	384 KB	Output is correct
17	Correct	3 ms	384 KB	Output is correct
18	Correct	3 ms	256 KB	Output is correct

Subtask #2

10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	384 KB	Output is correct
2	Correct	4 ms	384 KB	Output is correct
3	Correct	3 ms	384 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	256 KB	Output is correct
6	Correct	3 ms	256 KB	Output is correct
7	Correct	2 ms	332 KB	Output is correct
8	Correct	3 ms	384 KB	Output is correct
9	Correct	2 ms	256 KB	Output is correct
10	Correct	2 ms	256 KB	Output is correct
11	Correct	2 ms	256 KB	Output is correct
12	Correct	3 ms	384 KB	Output is correct
13	Correct	3 ms	384 KB	Output is correct
14	Correct	2 ms	384 KB	Output is correct
15	Correct	2 ms	256 KB	Output is correct
16	Correct	2 ms	384 KB	Output is correct
17	Correct	3 ms	384 KB	Output is correct
18	Correct	3 ms	256 KB	Output is correct
19	Correct	3 ms	384 KB	Output is correct
20	Correct	3 ms	428 KB	Output is correct
21	Correct	2 ms	384 KB	Output is correct
22	Correct	3 ms	384 KB	Output is correct
23	Correct	3 ms	384 KB	Output is correct
24	Correct	3 ms	256 KB	Output is correct
25	Correct	3 ms	384 KB	Output is correct
26	Correct	2 ms	384 KB	Output is correct
27	Correct	2 ms	256 KB	Output is correct
28	Correct	3 ms	460 KB	Output is correct
29	Correct	3 ms	384 KB	Output is correct

Subtask #3

28.0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	384 KB	Output is correct
2	Correct	4 ms	384 KB	Output is correct
3	Correct	3 ms	384 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	256 KB	Output is correct
6	Correct	3 ms	256 KB	Output is correct
7	Correct	2 ms	332 KB	Output is correct
8	Correct	3 ms	384 KB	Output is correct
9	Correct	2 ms	256 KB	Output is correct
10	Correct	2 ms	256 KB	Output is correct
11	Correct	2 ms	256 KB	Output is correct
12	Correct	3 ms	384 KB	Output is correct
13	Correct	3 ms	384 KB	Output is correct
14	Correct	2 ms	384 KB	Output is correct
15	Correct	2 ms	256 KB	Output is correct
16	Correct	2 ms	384 KB	Output is correct
17	Correct	3 ms	384 KB	Output is correct
18	Correct	3 ms	256 KB	Output is correct
19	Correct	3 ms	384 KB	Output is correct
20	Correct	3 ms	428 KB	Output is correct
21	Correct	2 ms	384 KB	Output is correct
22	Correct	3 ms	384 KB	Output is correct
23	Correct	3 ms	384 KB	Output is correct
24	Correct	3 ms	256 KB	Output is correct
25	Correct	3 ms	384 KB	Output is correct
26	Correct	2 ms	384 KB	Output is correct
27	Correct	2 ms	256 KB	Output is correct
28	Correct	3 ms	460 KB	Output is correct
29	Correct	3 ms	384 KB	Output is correct
30	Correct	182 ms	12004 KB	Output is correct
31	Correct	201 ms	12024 KB	Output is correct
32	Correct	143 ms	8184 KB	Output is correct
33	Correct	158 ms	12024 KB	Output is correct
34	Correct	137 ms	11996 KB	Output is correct
35	Correct	222 ms	12024 KB	Output is correct
36	Correct	154 ms	12124 KB	Output is correct
37	Correct	168 ms	12024 KB	Output is correct
38	Correct	148 ms	12152 KB	Output is correct
39	Correct	188 ms	12152 KB	Output is correct
40	Correct	162 ms	12024 KB	Output is correct
41	Correct	165 ms	12124 KB	Output is correct
42	Correct	174 ms	12168 KB	Output is correct
43	Correct	145 ms	12100 KB	Output is correct

Subtask #4

0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	3 ms	384 KB	3rd lines differ - on the 1st token, expected: '3304', found: '2744'
2	Halted	0 ms	0 KB	-

Subtask #5

0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	384 KB	Output is correct
2	Correct	4 ms	384 KB	Output is correct
3	Correct	3 ms	384 KB	Output is correct
4	Correct	2 ms	256 KB	Output is correct
5	Correct	2 ms	256 KB	Output is correct
6	Correct	3 ms	256 KB	Output is correct
7	Correct	2 ms	332 KB	Output is correct
8	Correct	3 ms	384 KB	Output is correct
9	Correct	2 ms	256 KB	Output is correct
10	Correct	2 ms	256 KB	Output is correct
11	Correct	2 ms	256 KB	Output is correct
12	Correct	3 ms	384 KB	Output is correct
13	Correct	3 ms	384 KB	Output is correct
14	Correct	2 ms	384 KB	Output is correct
15	Correct	2 ms	256 KB	Output is correct
16	Correct	2 ms	384 KB	Output is correct
17	Correct	3 ms	384 KB	Output is correct
18	Correct	3 ms	256 KB	Output is correct
19	Correct	3 ms	384 KB	Output is correct
20	Correct	3 ms	428 KB	Output is correct
21	Correct	2 ms	384 KB	Output is correct
22	Correct	3 ms	384 KB	Output is correct
23	Correct	3 ms	384 KB	Output is correct
24	Correct	3 ms	256 KB	Output is correct
25	Correct	3 ms	384 KB	Output is correct
26	Correct	2 ms	384 KB	Output is correct
27	Correct	2 ms	256 KB	Output is correct
28	Correct	3 ms	460 KB	Output is correct
29	Correct	3 ms	384 KB	Output is correct
30	Correct	182 ms	12004 KB	Output is correct
31	Correct	201 ms	12024 KB	Output is correct
32	Correct	143 ms	8184 KB	Output is correct
33	Correct	158 ms	12024 KB	Output is correct
34	Correct	137 ms	11996 KB	Output is correct
35	Correct	222 ms	12024 KB	Output is correct
36	Correct	154 ms	12124 KB	Output is correct
37	Correct	168 ms	12024 KB	Output is correct
38	Correct	148 ms	12152 KB	Output is correct
39	Correct	188 ms	12152 KB	Output is correct
40	Correct	162 ms	12024 KB	Output is correct
41	Correct	165 ms	12124 KB	Output is correct
42	Correct	174 ms	12168 KB	Output is correct
43	Correct	145 ms	12100 KB	Output is correct
44	Incorrect	3 ms	384 KB	3rd lines differ - on the 1st token, expected: '3304', found: '2744'
45	Halted	0 ms	0 KB	-