oj.uz

Submission #293789

# Submission time Handle Problem Language Result Execution time Memory
293789 2020-09-08T12:08:18 Z Bruteforceman Ancient Books (IOI17_books) C++11
50 / 100
 228 ms 20060 KB 
#include "bits/stdc++.h"
#include "books.h"
using namespace std;

long long minimum_walk(std::vector<int> p, int s) {
  int n = p.size();
  long long ans = 0;
  vector <bool> vis (n, false);
  vector <pair <int, int>> range;
  for(int i = 0; i < n; i++) ans += abs(p[i] - i);
  for(int i = 0; i < n; i++) {
    if(vis[i] == true) continue;
    vector <int> cycle;
    int cur = i;
    do {
      vis[cur] = true;
      cycle.push_back(cur);
      cur = p[cur];
    } while(vis[cur] == false);
    range.emplace_back(*min_element(cycle.begin(), cycle.end()),
                       *max_element(cycle.begin(), cycle.end()));
  }
  vector <int> pre (n, 0); 
  for(auto i : range) {
    pre[i.second] -= 1;
    pre[i.first] += 1;
  }
  for(int i = 1; i < pre.size(); i++) pre[i] += pre[i - 1];
  ans += count(pre.begin(), pre.end(), 0) * 2;
  for(int i = pre.size() - 1; i >= s; i--) {
    if(pre[i] == 1) break;
    ans -= 2;
  }
  for(int i = 0; i < s; i++) {
    if(pre[i] == 1) break;
    ans -= 2;
  }
	return ans;
}

Compilation message

books.cpp: In function 'long long int minimum_walk(std::vector<int>, int)':
books.cpp:28:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   28 |   for(int i = 1; i < pre.size(); i++) pre[i] += pre[i - 1];
      |                  ~~^~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 0 ms 256 KB Output is correct
17 Correct 0 ms 256 KB Output is correct
18 Correct 0 ms 256 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 0 ms 256 KB Output is correct
17 Correct 0 ms 256 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 256 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 256 KB Output is correct
26 Correct 1 ms 256 KB Output is correct
27 Correct 1 ms 256 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 1 ms 384 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 0 ms 256 KB Output is correct
17 Correct 0 ms 256 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 256 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 256 KB Output is correct
26 Correct 1 ms 256 KB Output is correct
27 Correct 1 ms 256 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 228 ms 12460 KB Output is correct
31 Correct 222 ms 14340 KB Output is correct
32 Correct 205 ms 20060 KB Output is correct
33 Correct 224 ms 17628 KB Output is correct
34 Correct 211 ms 17628 KB Output is correct
35 Correct 210 ms 16608 KB Output is correct
36 Correct 199 ms 14256 KB Output is correct
37 Correct 182 ms 12528 KB Output is correct
38 Correct 177 ms 12352 KB Output is correct
39 Correct 178 ms 12280 KB Output is correct
40 Correct 183 ms 12508 KB Output is correct
41 Correct 210 ms 13076 KB Output is correct
42 Correct 201 ms 13176 KB Output is correct
43 Correct 219 ms 18004 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 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 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 0 ms 256 KB Output is correct
17 Correct 0 ms 256 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 1 ms 256 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 384 KB Output is correct
23 Correct 1 ms 384 KB Output is correct
24 Correct 1 ms 384 KB Output is correct
25 Correct 1 ms 256 KB Output is correct
26 Correct 1 ms 256 KB Output is correct
27 Correct 1 ms 256 KB Output is correct
28 Correct 1 ms 384 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 228 ms 12460 KB Output is correct
31 Correct 222 ms 14340 KB Output is correct
32 Correct 205 ms 20060 KB Output is correct
33 Correct 224 ms 17628 KB Output is correct
34 Correct 211 ms 17628 KB Output is correct
35 Correct 210 ms 16608 KB Output is correct
36 Correct 199 ms 14256 KB Output is correct
37 Correct 182 ms 12528 KB Output is correct
38 Correct 177 ms 12352 KB Output is correct
39 Correct 178 ms 12280 KB Output is correct
40 Correct 183 ms 12508 KB Output is correct
41 Correct 210 ms 13076 KB Output is correct
42 Correct 201 ms 13176 KB Output is correct
43 Correct 219 ms 18004 KB Output is correct
44 Incorrect 1 ms 384 KB 3rd lines differ - on the 1st token, expected: '3304', found: '2744'
45 Halted 0 ms 0 KB -