Submission #813479

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
813479	2023-08-07T18:42:31 Z	erray	Ancient Books (IOI17_books)	C++17	50 / 100	100 ms	18764 KB

books

#include "books.h"
//author: erray
#include <bits/stdc++.h>

using namespace std;
 
#ifdef DEBUG
  #include "/home/ioi/codes/debug.h"
#else
  #define debug(...) (void) 37
#endif


long long minimum_walk(std::vector<int> p, int s) {
  int N = int(p.size());
	assert(s == 0);
  long long res = 0;
  int l = 0, r = N - 1;
  while (l < N && p[l] == l) {
    ++l;
  }
  while (r >= 0 && p[r] == r) {
    --r;
  }
  if (l == N) {
    return 0;
  }
  res += 2 * l;
  vector<int> upd(N);
  for (int i = 0; i < N; ++i) {
    int L = p[i], R = i;
    if (L > R) {
      swap(L, R);
    }
    upd[L] += 1;
    upd[R] -= 1;  
    res += (R - L);
  }
  for (int i = 0; i < N - 1; ++i) {
    upd[i + 1] += upd[i];
  }
  for (int i = l; i < r - 1; ++i) {
    if (upd[i] == 0) {
      res += 2;
    }
  }
  return res;
}

Subtask #1

12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	0 ms	300 KB	Output is correct
3	Correct	0 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	296 KB	Output is correct
7	Correct	0 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	212 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	300 KB	Output is correct
17	Correct	0 ms	212 KB	Output is correct
18	Correct	0 ms	212 KB	Output is correct

Subtask #2

10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	0 ms	300 KB	Output is correct
3	Correct	0 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	296 KB	Output is correct
7	Correct	0 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	212 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	300 KB	Output is correct
17	Correct	0 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
21	Correct	1 ms	212 KB	Output is correct
22	Correct	1 ms	212 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	1 ms	212 KB	Output is correct
25	Correct	1 ms	212 KB	Output is correct
26	Correct	1 ms	212 KB	Output is correct
27	Correct	1 ms	212 KB	Output is correct
28	Correct	1 ms	212 KB	Output is correct
29	Correct	1 ms	212 KB	Output is correct

Subtask #3

28.0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	0 ms	300 KB	Output is correct
3	Correct	0 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	296 KB	Output is correct
7	Correct	0 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	212 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	300 KB	Output is correct
17	Correct	0 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
21	Correct	1 ms	212 KB	Output is correct
22	Correct	1 ms	212 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	1 ms	212 KB	Output is correct
25	Correct	1 ms	212 KB	Output is correct
26	Correct	1 ms	212 KB	Output is correct
27	Correct	1 ms	212 KB	Output is correct
28	Correct	1 ms	212 KB	Output is correct
29	Correct	1 ms	212 KB	Output is correct
30	Correct	93 ms	18652 KB	Output is correct
31	Correct	94 ms	18636 KB	Output is correct
32	Correct	87 ms	14808 KB	Output is correct
33	Correct	90 ms	18656 KB	Output is correct
34	Correct	91 ms	18652 KB	Output is correct
35	Correct	94 ms	18736 KB	Output is correct
36	Correct	93 ms	18652 KB	Output is correct
37	Correct	95 ms	18636 KB	Output is correct
38	Correct	91 ms	18652 KB	Output is correct
39	Correct	90 ms	18648 KB	Output is correct
40	Correct	91 ms	18764 KB	Output is correct
41	Correct	93 ms	18644 KB	Output is correct
42	Correct	100 ms	18652 KB	Output is correct
43	Correct	95 ms	18648 KB	Output is correct

Subtask #4

0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	1 ms	468 KB	Execution killed with signal 6
2	Halted	0 ms	0 KB	-

Subtask #5

0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	212 KB	Output is correct
2	Correct	0 ms	300 KB	Output is correct
3	Correct	0 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	296 KB	Output is correct
7	Correct	0 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	212 KB	Output is correct
12	Correct	1 ms	212 KB	Output is correct
13	Correct	0 ms	212 KB	Output is correct
14	Correct	1 ms	212 KB	Output is correct
15	Correct	0 ms	212 KB	Output is correct
16	Correct	0 ms	300 KB	Output is correct
17	Correct	0 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
21	Correct	1 ms	212 KB	Output is correct
22	Correct	1 ms	212 KB	Output is correct
23	Correct	1 ms	212 KB	Output is correct
24	Correct	1 ms	212 KB	Output is correct
25	Correct	1 ms	212 KB	Output is correct
26	Correct	1 ms	212 KB	Output is correct
27	Correct	1 ms	212 KB	Output is correct
28	Correct	1 ms	212 KB	Output is correct
29	Correct	1 ms	212 KB	Output is correct
30	Correct	93 ms	18652 KB	Output is correct
31	Correct	94 ms	18636 KB	Output is correct
32	Correct	87 ms	14808 KB	Output is correct
33	Correct	90 ms	18656 KB	Output is correct
34	Correct	91 ms	18652 KB	Output is correct
35	Correct	94 ms	18736 KB	Output is correct
36	Correct	93 ms	18652 KB	Output is correct
37	Correct	95 ms	18636 KB	Output is correct
38	Correct	91 ms	18652 KB	Output is correct
39	Correct	90 ms	18648 KB	Output is correct
40	Correct	91 ms	18764 KB	Output is correct
41	Correct	93 ms	18644 KB	Output is correct
42	Correct	100 ms	18652 KB	Output is correct
43	Correct	95 ms	18648 KB	Output is correct
44	Runtime error	1 ms	468 KB	Execution killed with signal 6
45	Halted	0 ms	0 KB	-