oj.uz

Submission #566565

# Submission time Handle Problem Language Result Execution time Memory
566565 2022-05-22T12:14:31 Z lorenzoferrari Ancient Books (IOI17_books) C++17
50 / 100
 168 ms 19824 KB 
#include <bits/stdc++.h>
#include "books.h"
using namespace std;
using LL = long long;

#ifdef LORENZO
const int N = 1000;
#else
const int N = 1e6 + 42;
#endif

int t[2*N];

void upd(int l, int r) {
  for (l += N, r += N; l < r; l >>= 1, r >>= 1) {
    if (l & 1) t[l++] = 1;
    if (r & 1) t[--r] = 1;
  }
}
int qry(int p) {
  int ans = 0;
  for (p += N; p > 0; p >>= 1) {
    ans = max(ans, t[p]);
  }
  return ans == 0;
}

LL minimum_walk(vector<int> p, int s) {
  int n = p.size();
  LL ans = 0;
  for (int i = 0; i < n; ++i) {
    ans += abs(i - p[i]);
  }
  if (ans == 0) return ans;
  int rl = s+1;
  int rr = s;
  vector<int> cyc(n, -1);
  for (int i = 0, c = 0; i < n; ++i) {
    if (cyc[i] != -1) continue;
    int ii = i, l = i, r = i;
    do {
      cyc[ii] = c;
      ii = p[ii];
      l = min(l, ii);
      r = max(r, ii);
    } while (i != ii);
    ++c;
    if (l != r) {
      upd(l+1, r+1);
      rl = min(rl, r+1);
      rr = max(rr, l);
    }
  }
  for (int i = rl; i <= rr; ++i) {
    ans += 2 * qry(i);
  }
  // int first_step = 0;
  // for (int d = 0;; ++d) {
  //   if (s-d >= 0 && p[s-d] != s-d) {
  //     first_step = d;
  //     break;
  //   } else if (s+d < n && p[s+d] != s+d) {
  //     first_step = d;
  //     break;
  //   }
  // }
  // ans += 2 * first_step;
  return ans;
}

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 0 ms 212 KB Output is correct
4 Correct 1 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 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 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 0 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 0 ms 212 KB Output is correct
4 Correct 1 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 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 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 0 ms 212 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 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 0 ms 212 KB Output is correct
4 Correct 1 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 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 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 0 ms 212 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 168 ms 12164 KB Output is correct
31 Correct 156 ms 12016 KB Output is correct
32 Correct 104 ms 8048 KB Output is correct
33 Correct 130 ms 19324 KB Output is correct
34 Correct 129 ms 19276 KB Output is correct
35 Correct 128 ms 19452 KB Output is correct
36 Correct 145 ms 19696 KB Output is correct
37 Correct 131 ms 19788 KB Output is correct
38 Correct 120 ms 18932 KB Output is correct
39 Correct 133 ms 18552 KB Output is correct
40 Correct 133 ms 15012 KB Output is correct
41 Correct 144 ms 12624 KB Output is correct
42 Correct 130 ms 12928 KB Output is correct
43 Correct 134 ms 19824 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 340 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 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 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 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 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 0 ms 212 KB Output is correct
19 Correct 0 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 168 ms 12164 KB Output is correct
31 Correct 156 ms 12016 KB Output is correct
32 Correct 104 ms 8048 KB Output is correct
33 Correct 130 ms 19324 KB Output is correct
34 Correct 129 ms 19276 KB Output is correct
35 Correct 128 ms 19452 KB Output is correct
36 Correct 145 ms 19696 KB Output is correct
37 Correct 131 ms 19788 KB Output is correct
38 Correct 120 ms 18932 KB Output is correct
39 Correct 133 ms 18552 KB Output is correct
40 Correct 133 ms 15012 KB Output is correct
41 Correct 144 ms 12624 KB Output is correct
42 Correct 130 ms 12928 KB Output is correct
43 Correct 134 ms 19824 KB Output is correct
44 Incorrect 1 ms 340 KB 3rd lines differ - on the 1st token, expected: '3304', found: '2744'
45 Halted 0 ms 0 KB -