oj.uz

Submission #941421

# Submission time Handle Problem Language Result Execution time Memory
941421 2024-03-08T21:45:58 Z Numberz Arranging Shoes (IOI19_shoes) C++14
100 / 100
 132 ms 140296 KB 
#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;


const int Mx = 200005;
int arr[Mx];
int used[Mx];


//fenwick tree functions
void add(int index, int x) {
  index++;
  while (index < Mx) {
    arr[index] += x;
    index += index & -index;
  }
}

int get(int index) {
  index++;
  int r = 0;
  while (index > 0) {
    r += arr[index];
    index -= index & -index;
  }
  return r;
}


long long count_swaps(std::vector<int> s) {

  //build the trees
  int n = s.size() / 2;
  queue<int> right[n+1], left[n+1];
  for (int i = 0; i < n*2; i++) {
    if (s[i] > 0) right[s[i]].push(i+1);
    else left[-s[i]].push(i+1);
  }

  //same idea as before, go through, but with fenwick
  long long ans = 0;
  for (int i = 0; i < n*2; i++) {
    if (used[i+1]) continue;
    
    int x = right[abs(s[i])].front();
    int y = left[abs(s[i])].front();
    right[abs(s[i])].pop();
    left[abs(s[i])].pop();

    if (s[i] > 0) {
      ans += y - x - (get(y) - get(x));
      add(y, 1);
    } else {
      ans += x - y - (get(x) - get(y)) - 1;
      add(x, 1);
    }
    used[y] = 1;
    used[x] = 1;
  }
  
  return ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 444 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 444 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 448 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 356 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 344 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 344 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 444 KB Output is correct
3 Correct 1 ms 448 KB Output is correct
4 Correct 1 ms 448 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 600 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 604 KB Output is correct
17 Correct 1 ms 860 KB Output is correct
18 Correct 1 ms 1628 KB Output is correct
19 Correct 1 ms 1628 KB Output is correct
20 Correct 9 ms 14172 KB Output is correct
21 Correct 13 ms 14428 KB Output is correct
22 Correct 112 ms 140112 KB Output is correct
23 Correct 98 ms 140116 KB Output is correct
24 Correct 97 ms 140296 KB Output is correct
25 Correct 94 ms 139600 KB Output is correct
26 Correct 95 ms 140192 KB Output is correct
27 Correct 94 ms 140092 KB Output is correct
28 Correct 91 ms 139752 KB Output is correct
29 Correct 92 ms 139912 KB Output is correct
30 Correct 101 ms 139904 KB Output is correct
31 Correct 98 ms 140240 KB Output is correct
32 Correct 93 ms 139752 KB Output is correct
33 Correct 93 ms 139608 KB Output is correct
34 Correct 95 ms 139860 KB Output is correct
35 Correct 0 ms 344 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 99 ms 139752 KB Output is correct
38 Correct 92 ms 139664 KB Output is correct
39 Correct 93 ms 139856 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 127 ms 138836 KB Output is correct
6 Correct 105 ms 138836 KB Output is correct
7 Correct 126 ms 138960 KB Output is correct
8 Correct 91 ms 139856 KB Output is correct
9 Correct 130 ms 138836 KB Output is correct
10 Correct 119 ms 138832 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 444 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 448 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 356 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 344 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 344 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 1 ms 344 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 604 KB Output is correct
40 Correct 1 ms 856 KB Output is correct
41 Correct 1 ms 1628 KB Output is correct
42 Correct 1 ms 1628 KB Output is correct
43 Correct 1 ms 1628 KB Output is correct
44 Correct 1 ms 1732 KB Output is correct
45 Correct 1 ms 1628 KB Output is correct
46 Correct 1 ms 1628 KB Output is correct
47 Correct 1 ms 1624 KB Output is correct
48 Correct 1 ms 1628 KB Output is correct
49 Correct 1 ms 1628 KB Output is correct
50 Correct 1 ms 1628 KB Output is correct
51 Correct 1 ms 1628 KB Output is correct
52 Correct 1 ms 1628 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 444 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 448 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 356 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 344 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 344 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 1 ms 448 KB Output is correct
38 Correct 1 ms 448 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 600 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 0 ms 348 KB Output is correct
45 Correct 0 ms 348 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 1 ms 604 KB Output is correct
51 Correct 1 ms 860 KB Output is correct
52 Correct 1 ms 1628 KB Output is correct
53 Correct 1 ms 1628 KB Output is correct
54 Correct 9 ms 14172 KB Output is correct
55 Correct 13 ms 14428 KB Output is correct
56 Correct 112 ms 140112 KB Output is correct
57 Correct 98 ms 140116 KB Output is correct
58 Correct 97 ms 140296 KB Output is correct
59 Correct 94 ms 139600 KB Output is correct
60 Correct 95 ms 140192 KB Output is correct
61 Correct 94 ms 140092 KB Output is correct
62 Correct 91 ms 139752 KB Output is correct
63 Correct 92 ms 139912 KB Output is correct
64 Correct 101 ms 139904 KB Output is correct
65 Correct 98 ms 140240 KB Output is correct
66 Correct 93 ms 139752 KB Output is correct
67 Correct 93 ms 139608 KB Output is correct
68 Correct 95 ms 139860 KB Output is correct
69 Correct 0 ms 344 KB Output is correct
70 Correct 1 ms 348 KB Output is correct
71 Correct 99 ms 139752 KB Output is correct
72 Correct 92 ms 139664 KB Output is correct
73 Correct 93 ms 139856 KB Output is correct
74 Correct 0 ms 344 KB Output is correct
75 Correct 1 ms 348 KB Output is correct
76 Correct 0 ms 348 KB Output is correct
77 Correct 0 ms 348 KB Output is correct
78 Correct 127 ms 138836 KB Output is correct
79 Correct 105 ms 138836 KB Output is correct
80 Correct 126 ms 138960 KB Output is correct
81 Correct 91 ms 139856 KB Output is correct
82 Correct 130 ms 138836 KB Output is correct
83 Correct 119 ms 138832 KB Output is correct
84 Correct 1 ms 344 KB Output is correct
85 Correct 1 ms 348 KB Output is correct
86 Correct 0 ms 604 KB Output is correct
87 Correct 1 ms 856 KB Output is correct
88 Correct 1 ms 1628 KB Output is correct
89 Correct 1 ms 1628 KB Output is correct
90 Correct 1 ms 1628 KB Output is correct
91 Correct 1 ms 1732 KB Output is correct
92 Correct 1 ms 1628 KB Output is correct
93 Correct 1 ms 1628 KB Output is correct
94 Correct 1 ms 1624 KB Output is correct
95 Correct 1 ms 1628 KB Output is correct
96 Correct 1 ms 1628 KB Output is correct
97 Correct 1 ms 1628 KB Output is correct
98 Correct 1 ms 1628 KB Output is correct
99 Correct 1 ms 1628 KB Output is correct
100 Correct 1 ms 1624 KB Output is correct
101 Correct 9 ms 14172 KB Output is correct
102 Correct 9 ms 14196 KB Output is correct
103 Correct 131 ms 139200 KB Output is correct
104 Correct 127 ms 139344 KB Output is correct
105 Correct 126 ms 139320 KB Output is correct
106 Correct 132 ms 139016 KB Output is correct
107 Correct 107 ms 139348 KB Output is correct
108 Correct 107 ms 139348 KB Output is correct
109 Correct 93 ms 139796 KB Output is correct
110 Correct 98 ms 139856 KB Output is correct
111 Correct 127 ms 138836 KB Output is correct
112 Correct 129 ms 139348 KB Output is correct
113 Correct 107 ms 139028 KB Output is correct
114 Correct 129 ms 138964 KB Output is correct
115 Correct 129 ms 138832 KB Output is correct