oj.uz

Submission #780581

# Submission time Handle Problem Language Result Execution time Memory
780581 2023-07-12T10:25:57 Z Minindu206 Arranging Shoes (IOI19_shoes) C++14
100 / 100
 127 ms 138900 KB 
#include "shoes.h"
#include <bits/stdc++.h>
#define ll long long
const int MAXN = 1e5 + 5;
using namespace std;
 
queue<int> pos[MAXN], neg[MAXN];
struct fenwick {
  int n;
  vector<int> fn;
  void init(int _n)
  {
    this->n = _n + 1;
    fn.resize(n, 0);
  }
  void update(int x, int y) 
  {
    x++;
    while(x < n)
    {
      fn[x] += y;
      x += (x & (-x));
    }
  }
  int sum(int ind)
  {
    ind++;
    int ans = 0;
    while(ind)
    {
      ans += fn[ind];
      ind -= (ind & (-ind));
    }
    return ans;
  }
};
 
ll count_swaps(vector<int> s)
{
    int n = s.size() / 2;
    for(int i=0;i<2 * n;i++)
    {
        if(s[i] > 0)
            pos[s[i]].push(i);
        else
            neg[-s[i]].push(i);
    } 
    vector<int> vis(2 * n);
    fenwick tree;
    tree.init((2 * n));
    ll ans = 0;
    for(int i=0;i<2*n;i++)
    {
        ll swps = 0;
        if(vis[i])
            continue;
        if(s[i] > 0)
        {
            int nxt = neg[s[i]].front();
            neg[s[i]].pop();
            pos[s[i]].pop();
            // cout << i << " " << nxt << '\n';
            // cout << "swaps " << (nxt - i) - (tree.sum(nxt + 1) - tree.sum(i + 1)) << '\n';
            ans += (nxt - i) - (tree.sum(nxt) - tree.sum(i));
            tree.update(nxt + 1, 1);
            vis[i] = 1;
            vis[nxt] = 1;
        }
        else
        {
            int nxt = pos[-s[i]].front();
            pos[-s[i]].pop();
            neg[-s[i]].pop();
            // cout << i << " " << nxt << '\n';
            // cout << "swaps " << (nxt - i - 1) - (tree.sum(nxt + 1) - tree.sum(i + 1)) << '\n';
            ans += (nxt - i - 1) - (tree.sum(nxt) - tree.sum(i));
            tree.update(nxt + 1, 1);
            vis[i] = 1;
            vis[nxt] = 1;
        }
    }
    return ans;
}

Compilation message

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:54:12: warning: unused variable 'swps' [-Wunused-variable]
   54 |         ll swps = 0;
      |            ^~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 63 ms 134944 KB Output is correct
2 Correct 63 ms 134912 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 63 ms 134944 KB Output is correct
2 Correct 63 ms 134912 KB Output is correct
3 Correct 63 ms 134852 KB Output is correct
4 Correct 69 ms 134860 KB Output is correct
5 Correct 64 ms 134856 KB Output is correct
6 Correct 64 ms 134856 KB Output is correct
7 Correct 66 ms 134852 KB Output is correct
8 Correct 63 ms 134892 KB Output is correct
9 Correct 68 ms 134860 KB Output is correct
10 Correct 68 ms 134916 KB Output is correct
11 Correct 65 ms 134812 KB Output is correct
12 Correct 78 ms 134884 KB Output is correct
13 Correct 64 ms 134848 KB Output is correct
14 Correct 64 ms 134856 KB Output is correct
15 Correct 64 ms 134856 KB Output is correct
16 Correct 63 ms 134908 KB Output is correct
17 Correct 65 ms 134872 KB Output is correct
18 Correct 64 ms 134864 KB Output is correct
19 Correct 65 ms 134848 KB Output is correct
20 Correct 79 ms 134860 KB Output is correct
21 Correct 65 ms 134864 KB Output is correct
22 Correct 64 ms 134840 KB Output is correct
23 Correct 69 ms 134904 KB Output is correct
24 Correct 65 ms 134868 KB Output is correct
25 Correct 67 ms 134904 KB Output is correct
26 Correct 68 ms 134900 KB Output is correct
27 Correct 65 ms 134856 KB Output is correct
28 Correct 68 ms 134808 KB Output is correct
29 Correct 65 ms 134832 KB Output is correct
30 Correct 74 ms 134828 KB Output is correct
31 Correct 66 ms 134888 KB Output is correct
32 Correct 66 ms 134860 KB Output is correct
33 Correct 66 ms 134848 KB Output is correct
34 Correct 72 ms 134908 KB Output is correct
35 Correct 73 ms 134860 KB Output is correct
36 Correct 75 ms 134988 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 63 ms 134944 KB Output is correct
2 Correct 63 ms 134912 KB Output is correct
3 Correct 65 ms 134844 KB Output is correct
4 Correct 66 ms 134820 KB Output is correct
5 Correct 65 ms 134928 KB Output is correct
6 Correct 65 ms 134860 KB Output is correct
7 Correct 64 ms 134908 KB Output is correct
8 Correct 73 ms 134924 KB Output is correct
9 Correct 68 ms 134812 KB Output is correct
10 Correct 65 ms 134860 KB Output is correct
11 Correct 63 ms 134912 KB Output is correct
12 Correct 64 ms 134808 KB Output is correct
13 Correct 64 ms 134856 KB Output is correct
14 Correct 63 ms 134904 KB Output is correct
15 Correct 64 ms 134848 KB Output is correct
16 Correct 66 ms 134808 KB Output is correct
17 Correct 81 ms 134856 KB Output is correct
18 Correct 83 ms 134928 KB Output is correct
19 Correct 76 ms 134912 KB Output is correct
20 Correct 73 ms 135264 KB Output is correct
21 Correct 73 ms 135212 KB Output is correct
22 Correct 92 ms 138784 KB Output is correct
23 Correct 88 ms 138860 KB Output is correct
24 Correct 92 ms 138792 KB Output is correct
25 Correct 89 ms 138828 KB Output is correct
26 Correct 91 ms 138856 KB Output is correct
27 Correct 89 ms 138848 KB Output is correct
28 Correct 91 ms 138900 KB Output is correct
29 Correct 90 ms 138900 KB Output is correct
30 Correct 99 ms 138792 KB Output is correct
31 Correct 91 ms 138856 KB Output is correct
32 Correct 91 ms 138828 KB Output is correct
33 Correct 92 ms 138820 KB Output is correct
34 Correct 88 ms 138880 KB Output is correct
35 Correct 64 ms 134896 KB Output is correct
36 Correct 66 ms 134920 KB Output is correct
37 Correct 88 ms 138796 KB Output is correct
38 Correct 89 ms 138788 KB Output is correct
39 Correct 91 ms 138792 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 64 ms 134860 KB Output is correct
2 Correct 66 ms 134896 KB Output is correct
3 Correct 73 ms 134860 KB Output is correct
4 Correct 65 ms 134924 KB Output is correct
5 Correct 115 ms 138208 KB Output is correct
6 Correct 92 ms 138032 KB Output is correct
7 Correct 115 ms 138012 KB Output is correct
8 Correct 89 ms 138852 KB Output is correct
9 Correct 114 ms 138088 KB Output is correct
10 Correct 127 ms 138060 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 63 ms 134944 KB Output is correct
2 Correct 63 ms 134912 KB Output is correct
3 Correct 63 ms 134852 KB Output is correct
4 Correct 69 ms 134860 KB Output is correct
5 Correct 64 ms 134856 KB Output is correct
6 Correct 64 ms 134856 KB Output is correct
7 Correct 66 ms 134852 KB Output is correct
8 Correct 63 ms 134892 KB Output is correct
9 Correct 68 ms 134860 KB Output is correct
10 Correct 68 ms 134916 KB Output is correct
11 Correct 65 ms 134812 KB Output is correct
12 Correct 78 ms 134884 KB Output is correct
13 Correct 64 ms 134848 KB Output is correct
14 Correct 64 ms 134856 KB Output is correct
15 Correct 64 ms 134856 KB Output is correct
16 Correct 63 ms 134908 KB Output is correct
17 Correct 65 ms 134872 KB Output is correct
18 Correct 64 ms 134864 KB Output is correct
19 Correct 65 ms 134848 KB Output is correct
20 Correct 79 ms 134860 KB Output is correct
21 Correct 65 ms 134864 KB Output is correct
22 Correct 64 ms 134840 KB Output is correct
23 Correct 69 ms 134904 KB Output is correct
24 Correct 65 ms 134868 KB Output is correct
25 Correct 67 ms 134904 KB Output is correct
26 Correct 68 ms 134900 KB Output is correct
27 Correct 65 ms 134856 KB Output is correct
28 Correct 68 ms 134808 KB Output is correct
29 Correct 65 ms 134832 KB Output is correct
30 Correct 74 ms 134828 KB Output is correct
31 Correct 66 ms 134888 KB Output is correct
32 Correct 66 ms 134860 KB Output is correct
33 Correct 66 ms 134848 KB Output is correct
34 Correct 72 ms 134908 KB Output is correct
35 Correct 73 ms 134860 KB Output is correct
36 Correct 75 ms 134988 KB Output is correct
37 Correct 64 ms 134888 KB Output is correct
38 Correct 65 ms 134884 KB Output is correct
39 Correct 65 ms 134848 KB Output is correct
40 Correct 64 ms 134844 KB Output is correct
41 Correct 64 ms 134924 KB Output is correct
42 Correct 65 ms 134892 KB Output is correct
43 Correct 65 ms 134872 KB Output is correct
44 Correct 64 ms 134944 KB Output is correct
45 Correct 65 ms 134944 KB Output is correct
46 Correct 65 ms 134908 KB Output is correct
47 Correct 67 ms 134852 KB Output is correct
48 Correct 65 ms 134920 KB Output is correct
49 Correct 65 ms 134860 KB Output is correct
50 Correct 75 ms 134880 KB Output is correct
51 Correct 82 ms 134912 KB Output is correct
52 Correct 65 ms 134864 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 63 ms 134944 KB Output is correct
2 Correct 63 ms 134912 KB Output is correct
3 Correct 63 ms 134852 KB Output is correct
4 Correct 69 ms 134860 KB Output is correct
5 Correct 64 ms 134856 KB Output is correct
6 Correct 64 ms 134856 KB Output is correct
7 Correct 66 ms 134852 KB Output is correct
8 Correct 63 ms 134892 KB Output is correct
9 Correct 68 ms 134860 KB Output is correct
10 Correct 68 ms 134916 KB Output is correct
11 Correct 65 ms 134812 KB Output is correct
12 Correct 78 ms 134884 KB Output is correct
13 Correct 64 ms 134848 KB Output is correct
14 Correct 64 ms 134856 KB Output is correct
15 Correct 64 ms 134856 KB Output is correct
16 Correct 63 ms 134908 KB Output is correct
17 Correct 65 ms 134872 KB Output is correct
18 Correct 64 ms 134864 KB Output is correct
19 Correct 65 ms 134848 KB Output is correct
20 Correct 79 ms 134860 KB Output is correct
21 Correct 65 ms 134864 KB Output is correct
22 Correct 64 ms 134840 KB Output is correct
23 Correct 69 ms 134904 KB Output is correct
24 Correct 65 ms 134868 KB Output is correct
25 Correct 67 ms 134904 KB Output is correct
26 Correct 68 ms 134900 KB Output is correct
27 Correct 65 ms 134856 KB Output is correct
28 Correct 68 ms 134808 KB Output is correct
29 Correct 65 ms 134832 KB Output is correct
30 Correct 74 ms 134828 KB Output is correct
31 Correct 66 ms 134888 KB Output is correct
32 Correct 66 ms 134860 KB Output is correct
33 Correct 66 ms 134848 KB Output is correct
34 Correct 72 ms 134908 KB Output is correct
35 Correct 73 ms 134860 KB Output is correct
36 Correct 75 ms 134988 KB Output is correct
37 Correct 65 ms 134844 KB Output is correct
38 Correct 66 ms 134820 KB Output is correct
39 Correct 65 ms 134928 KB Output is correct
40 Correct 65 ms 134860 KB Output is correct
41 Correct 64 ms 134908 KB Output is correct
42 Correct 73 ms 134924 KB Output is correct
43 Correct 68 ms 134812 KB Output is correct
44 Correct 65 ms 134860 KB Output is correct
45 Correct 63 ms 134912 KB Output is correct
46 Correct 64 ms 134808 KB Output is correct
47 Correct 64 ms 134856 KB Output is correct
48 Correct 63 ms 134904 KB Output is correct
49 Correct 64 ms 134848 KB Output is correct
50 Correct 66 ms 134808 KB Output is correct
51 Correct 81 ms 134856 KB Output is correct
52 Correct 83 ms 134928 KB Output is correct
53 Correct 76 ms 134912 KB Output is correct
54 Correct 73 ms 135264 KB Output is correct
55 Correct 73 ms 135212 KB Output is correct
56 Correct 92 ms 138784 KB Output is correct
57 Correct 88 ms 138860 KB Output is correct
58 Correct 92 ms 138792 KB Output is correct
59 Correct 89 ms 138828 KB Output is correct
60 Correct 91 ms 138856 KB Output is correct
61 Correct 89 ms 138848 KB Output is correct
62 Correct 91 ms 138900 KB Output is correct
63 Correct 90 ms 138900 KB Output is correct
64 Correct 99 ms 138792 KB Output is correct
65 Correct 91 ms 138856 KB Output is correct
66 Correct 91 ms 138828 KB Output is correct
67 Correct 92 ms 138820 KB Output is correct
68 Correct 88 ms 138880 KB Output is correct
69 Correct 64 ms 134896 KB Output is correct
70 Correct 66 ms 134920 KB Output is correct
71 Correct 88 ms 138796 KB Output is correct
72 Correct 89 ms 138788 KB Output is correct
73 Correct 91 ms 138792 KB Output is correct
74 Correct 64 ms 134860 KB Output is correct
75 Correct 66 ms 134896 KB Output is correct
76 Correct 73 ms 134860 KB Output is correct
77 Correct 65 ms 134924 KB Output is correct
78 Correct 115 ms 138208 KB Output is correct
79 Correct 92 ms 138032 KB Output is correct
80 Correct 115 ms 138012 KB Output is correct
81 Correct 89 ms 138852 KB Output is correct
82 Correct 114 ms 138088 KB Output is correct
83 Correct 127 ms 138060 KB Output is correct
84 Correct 64 ms 134888 KB Output is correct
85 Correct 65 ms 134884 KB Output is correct
86 Correct 65 ms 134848 KB Output is correct
87 Correct 64 ms 134844 KB Output is correct
88 Correct 64 ms 134924 KB Output is correct
89 Correct 65 ms 134892 KB Output is correct
90 Correct 65 ms 134872 KB Output is correct
91 Correct 64 ms 134944 KB Output is correct
92 Correct 65 ms 134944 KB Output is correct
93 Correct 65 ms 134908 KB Output is correct
94 Correct 67 ms 134852 KB Output is correct
95 Correct 65 ms 134920 KB Output is correct
96 Correct 65 ms 134860 KB Output is correct
97 Correct 75 ms 134880 KB Output is correct
98 Correct 82 ms 134912 KB Output is correct
99 Correct 65 ms 134864 KB Output is correct
100 Correct 74 ms 134888 KB Output is correct
101 Correct 69 ms 135112 KB Output is correct
102 Correct 83 ms 135168 KB Output is correct
103 Correct 119 ms 138044 KB Output is correct
104 Correct 118 ms 138152 KB Output is correct
105 Correct 112 ms 138060 KB Output is correct
106 Correct 114 ms 137952 KB Output is correct
107 Correct 97 ms 138024 KB Output is correct
108 Correct 104 ms 138040 KB Output is correct
109 Correct 97 ms 138896 KB Output is correct
110 Correct 89 ms 138824 KB Output is correct
111 Correct 111 ms 138060 KB Output is correct
112 Correct 115 ms 138072 KB Output is correct
113 Correct 96 ms 137968 KB Output is correct
114 Correct 113 ms 138024 KB Output is correct
115 Correct 110 ms 138024 KB Output is correct