oj.uz

Submission #257612

# Submission time Handle Problem Language Result Execution time Memory
257612 2020-08-04T13:31:07 Z StevenH Arranging Shoes (IOI19_shoes) C++14
100 / 100
 104 ms 19816 KB 
// #include "shoes.h"
#include <bits/stdc++.h>
#define MAXN 200005
using namespace std;
int x, a[MAXN], n;
inline int lowbit(int x)
{
  return x & (-x);
}
void add(int x)
{
  while (x <= n)
  {
    a[x]++;
    x += lowbit(x);
  }
  return;
}
int pre(int x)
{
  int ans = 0;
  while (x > 0)
  {
    ans += a[x];
    x -= lowbit(x);
  }
  return ans;
}
int query(int x, int y)
{
  return pre(y) - pre(x - 1);
}
vector<vector<int> > rpos(MAXN), lpos(MAXN);
bool vis[MAXN];
long long count_swaps(std::vector<int> s)
{

  n = s.size();

  s.push_back(0);
  for (int i = n; i >= 1; i--)
    s[i] = s[i - 1];

  for (int i = n; i >= 1; i--)
    if (s[i] > 0)
      rpos[s[i]].push_back(i);
    else
      lpos[-s[i]].push_back(i);

  long long sum = 0;
  int cnt = 0;
  for (int i = 1; i <= n; i++)
  {
    if (vis[i])
      continue;
    if (s[i] < 0)
    {
      int ss = -s[i];
      sum += i + query(i + 1, n) - 1 - cnt;
      vis[i] = 1;
      add(i);
      int pos;
      for (pos = rpos[ss].back(); vis[pos] == 1; pos = rpos[ss].back())
        rpos[ss].pop_back();
      vis[pos] = 1;
      sum += pos - (cnt + 2) + query(pos + 1, n);
      add(pos);
      cnt += 2;
    }
    else if (s[i] > 0)
    {
      int ss = s[i];
      sum += (i - cnt - 1) + query(i + 1, n);
      add(i);
      vis[i] = 1;

      int pos;
      for (pos = lpos[ss].back(); vis[pos] == 1; pos = lpos[ss].back())
        lpos[ss].pop_back();
      vis[pos] = 1;
      sum += pos - (cnt + 2) + query(pos + 1, n) + 1;
      add(pos);
      cnt += 2;
    }
  }
  return sum;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9728 KB Output is correct
2 Correct 9 ms 9728 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9728 KB Output is correct
2 Correct 9 ms 9728 KB Output is correct
3 Correct 6 ms 9728 KB Output is correct
4 Correct 8 ms 9728 KB Output is correct
5 Correct 8 ms 9728 KB Output is correct
6 Correct 6 ms 9728 KB Output is correct
7 Correct 8 ms 9728 KB Output is correct
8 Correct 6 ms 9728 KB Output is correct
9 Correct 6 ms 9728 KB Output is correct
10 Correct 8 ms 9728 KB Output is correct
11 Correct 6 ms 9728 KB Output is correct
12 Correct 8 ms 9728 KB Output is correct
13 Correct 6 ms 9728 KB Output is correct
14 Correct 8 ms 9856 KB Output is correct
15 Correct 8 ms 9728 KB Output is correct
16 Correct 6 ms 9728 KB Output is correct
17 Correct 7 ms 9728 KB Output is correct
18 Correct 6 ms 9728 KB Output is correct
19 Correct 6 ms 9728 KB Output is correct
20 Correct 6 ms 9728 KB Output is correct
21 Correct 6 ms 9728 KB Output is correct
22 Correct 6 ms 9728 KB Output is correct
23 Correct 6 ms 9728 KB Output is correct
24 Correct 6 ms 9728 KB Output is correct
25 Correct 6 ms 9728 KB Output is correct
26 Correct 6 ms 9728 KB Output is correct
27 Correct 6 ms 9728 KB Output is correct
28 Correct 7 ms 9728 KB Output is correct
29 Correct 6 ms 9728 KB Output is correct
30 Correct 7 ms 9728 KB Output is correct
31 Correct 8 ms 9728 KB Output is correct
32 Correct 7 ms 9728 KB Output is correct
33 Correct 6 ms 9728 KB Output is correct
34 Correct 8 ms 9856 KB Output is correct
35 Correct 6 ms 9728 KB Output is correct
36 Correct 8 ms 9728 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9728 KB Output is correct
2 Correct 9 ms 9728 KB Output is correct
3 Correct 6 ms 9728 KB Output is correct
4 Correct 6 ms 9728 KB Output is correct
5 Correct 8 ms 9728 KB Output is correct
6 Correct 7 ms 9728 KB Output is correct
7 Correct 8 ms 9728 KB Output is correct
8 Correct 9 ms 9728 KB Output is correct
9 Correct 9 ms 9728 KB Output is correct
10 Correct 10 ms 9728 KB Output is correct
11 Correct 6 ms 9728 KB Output is correct
12 Correct 9 ms 9728 KB Output is correct
13 Correct 6 ms 9728 KB Output is correct
14 Correct 7 ms 9728 KB Output is correct
15 Correct 6 ms 9728 KB Output is correct
16 Correct 6 ms 9728 KB Output is correct
17 Correct 6 ms 9728 KB Output is correct
18 Correct 6 ms 9728 KB Output is correct
19 Correct 6 ms 9728 KB Output is correct
20 Correct 10 ms 10240 KB Output is correct
21 Correct 12 ms 10240 KB Output is correct
22 Correct 47 ms 13928 KB Output is correct
23 Correct 44 ms 14824 KB Output is correct
24 Correct 47 ms 15336 KB Output is correct
25 Correct 41 ms 14568 KB Output is correct
26 Correct 44 ms 14952 KB Output is correct
27 Correct 45 ms 14568 KB Output is correct
28 Correct 41 ms 14772 KB Output is correct
29 Correct 43 ms 14828 KB Output is correct
30 Correct 41 ms 14824 KB Output is correct
31 Correct 43 ms 14824 KB Output is correct
32 Correct 43 ms 14888 KB Output is correct
33 Correct 39 ms 14696 KB Output is correct
34 Correct 41 ms 14824 KB Output is correct
35 Correct 6 ms 9728 KB Output is correct
36 Correct 8 ms 9728 KB Output is correct
37 Correct 41 ms 14888 KB Output is correct
38 Correct 40 ms 14824 KB Output is correct
39 Correct 54 ms 14892 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9728 KB Output is correct
2 Correct 6 ms 9728 KB Output is correct
3 Correct 7 ms 9728 KB Output is correct
4 Correct 7 ms 9728 KB Output is correct
5 Correct 81 ms 18792 KB Output is correct
6 Correct 61 ms 14056 KB Output is correct
7 Correct 70 ms 18920 KB Output is correct
8 Correct 43 ms 13672 KB Output is correct
9 Correct 71 ms 19816 KB Output is correct
10 Correct 68 ms 16744 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9728 KB Output is correct
2 Correct 9 ms 9728 KB Output is correct
3 Correct 6 ms 9728 KB Output is correct
4 Correct 8 ms 9728 KB Output is correct
5 Correct 8 ms 9728 KB Output is correct
6 Correct 6 ms 9728 KB Output is correct
7 Correct 8 ms 9728 KB Output is correct
8 Correct 6 ms 9728 KB Output is correct
9 Correct 6 ms 9728 KB Output is correct
10 Correct 8 ms 9728 KB Output is correct
11 Correct 6 ms 9728 KB Output is correct
12 Correct 8 ms 9728 KB Output is correct
13 Correct 6 ms 9728 KB Output is correct
14 Correct 8 ms 9856 KB Output is correct
15 Correct 8 ms 9728 KB Output is correct
16 Correct 6 ms 9728 KB Output is correct
17 Correct 7 ms 9728 KB Output is correct
18 Correct 6 ms 9728 KB Output is correct
19 Correct 6 ms 9728 KB Output is correct
20 Correct 6 ms 9728 KB Output is correct
21 Correct 6 ms 9728 KB Output is correct
22 Correct 6 ms 9728 KB Output is correct
23 Correct 6 ms 9728 KB Output is correct
24 Correct 6 ms 9728 KB Output is correct
25 Correct 6 ms 9728 KB Output is correct
26 Correct 6 ms 9728 KB Output is correct
27 Correct 6 ms 9728 KB Output is correct
28 Correct 7 ms 9728 KB Output is correct
29 Correct 6 ms 9728 KB Output is correct
30 Correct 7 ms 9728 KB Output is correct
31 Correct 8 ms 9728 KB Output is correct
32 Correct 7 ms 9728 KB Output is correct
33 Correct 6 ms 9728 KB Output is correct
34 Correct 8 ms 9856 KB Output is correct
35 Correct 6 ms 9728 KB Output is correct
36 Correct 8 ms 9728 KB Output is correct
37 Correct 5 ms 9728 KB Output is correct
38 Correct 7 ms 9728 KB Output is correct
39 Correct 6 ms 9728 KB Output is correct
40 Correct 6 ms 9728 KB Output is correct
41 Correct 8 ms 9856 KB Output is correct
42 Correct 6 ms 9856 KB Output is correct
43 Correct 8 ms 9856 KB Output is correct
44 Correct 8 ms 9856 KB Output is correct
45 Correct 9 ms 9856 KB Output is correct
46 Correct 6 ms 9856 KB Output is correct
47 Correct 11 ms 9728 KB Output is correct
48 Correct 6 ms 9856 KB Output is correct
49 Correct 8 ms 9728 KB Output is correct
50 Correct 6 ms 9728 KB Output is correct
51 Correct 10 ms 9728 KB Output is correct
52 Correct 6 ms 9856 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9728 KB Output is correct
2 Correct 9 ms 9728 KB Output is correct
3 Correct 6 ms 9728 KB Output is correct
4 Correct 8 ms 9728 KB Output is correct
5 Correct 8 ms 9728 KB Output is correct
6 Correct 6 ms 9728 KB Output is correct
7 Correct 8 ms 9728 KB Output is correct
8 Correct 6 ms 9728 KB Output is correct
9 Correct 6 ms 9728 KB Output is correct
10 Correct 8 ms 9728 KB Output is correct
11 Correct 6 ms 9728 KB Output is correct
12 Correct 8 ms 9728 KB Output is correct
13 Correct 6 ms 9728 KB Output is correct
14 Correct 8 ms 9856 KB Output is correct
15 Correct 8 ms 9728 KB Output is correct
16 Correct 6 ms 9728 KB Output is correct
17 Correct 7 ms 9728 KB Output is correct
18 Correct 6 ms 9728 KB Output is correct
19 Correct 6 ms 9728 KB Output is correct
20 Correct 6 ms 9728 KB Output is correct
21 Correct 6 ms 9728 KB Output is correct
22 Correct 6 ms 9728 KB Output is correct
23 Correct 6 ms 9728 KB Output is correct
24 Correct 6 ms 9728 KB Output is correct
25 Correct 6 ms 9728 KB Output is correct
26 Correct 6 ms 9728 KB Output is correct
27 Correct 6 ms 9728 KB Output is correct
28 Correct 7 ms 9728 KB Output is correct
29 Correct 6 ms 9728 KB Output is correct
30 Correct 7 ms 9728 KB Output is correct
31 Correct 8 ms 9728 KB Output is correct
32 Correct 7 ms 9728 KB Output is correct
33 Correct 6 ms 9728 KB Output is correct
34 Correct 8 ms 9856 KB Output is correct
35 Correct 6 ms 9728 KB Output is correct
36 Correct 8 ms 9728 KB Output is correct
37 Correct 6 ms 9728 KB Output is correct
38 Correct 6 ms 9728 KB Output is correct
39 Correct 8 ms 9728 KB Output is correct
40 Correct 7 ms 9728 KB Output is correct
41 Correct 8 ms 9728 KB Output is correct
42 Correct 9 ms 9728 KB Output is correct
43 Correct 9 ms 9728 KB Output is correct
44 Correct 10 ms 9728 KB Output is correct
45 Correct 6 ms 9728 KB Output is correct
46 Correct 9 ms 9728 KB Output is correct
47 Correct 6 ms 9728 KB Output is correct
48 Correct 7 ms 9728 KB Output is correct
49 Correct 6 ms 9728 KB Output is correct
50 Correct 6 ms 9728 KB Output is correct
51 Correct 6 ms 9728 KB Output is correct
52 Correct 6 ms 9728 KB Output is correct
53 Correct 6 ms 9728 KB Output is correct
54 Correct 10 ms 10240 KB Output is correct
55 Correct 12 ms 10240 KB Output is correct
56 Correct 47 ms 13928 KB Output is correct
57 Correct 44 ms 14824 KB Output is correct
58 Correct 47 ms 15336 KB Output is correct
59 Correct 41 ms 14568 KB Output is correct
60 Correct 44 ms 14952 KB Output is correct
61 Correct 45 ms 14568 KB Output is correct
62 Correct 41 ms 14772 KB Output is correct
63 Correct 43 ms 14828 KB Output is correct
64 Correct 41 ms 14824 KB Output is correct
65 Correct 43 ms 14824 KB Output is correct
66 Correct 43 ms 14888 KB Output is correct
67 Correct 39 ms 14696 KB Output is correct
68 Correct 41 ms 14824 KB Output is correct
69 Correct 6 ms 9728 KB Output is correct
70 Correct 8 ms 9728 KB Output is correct
71 Correct 41 ms 14888 KB Output is correct
72 Correct 40 ms 14824 KB Output is correct
73 Correct 54 ms 14892 KB Output is correct
74 Correct 6 ms 9728 KB Output is correct
75 Correct 6 ms 9728 KB Output is correct
76 Correct 7 ms 9728 KB Output is correct
77 Correct 7 ms 9728 KB Output is correct
78 Correct 81 ms 18792 KB Output is correct
79 Correct 61 ms 14056 KB Output is correct
80 Correct 70 ms 18920 KB Output is correct
81 Correct 43 ms 13672 KB Output is correct
82 Correct 71 ms 19816 KB Output is correct
83 Correct 68 ms 16744 KB Output is correct
84 Correct 5 ms 9728 KB Output is correct
85 Correct 7 ms 9728 KB Output is correct
86 Correct 6 ms 9728 KB Output is correct
87 Correct 6 ms 9728 KB Output is correct
88 Correct 8 ms 9856 KB Output is correct
89 Correct 6 ms 9856 KB Output is correct
90 Correct 8 ms 9856 KB Output is correct
91 Correct 8 ms 9856 KB Output is correct
92 Correct 9 ms 9856 KB Output is correct
93 Correct 6 ms 9856 KB Output is correct
94 Correct 11 ms 9728 KB Output is correct
95 Correct 6 ms 9856 KB Output is correct
96 Correct 8 ms 9728 KB Output is correct
97 Correct 6 ms 9728 KB Output is correct
98 Correct 10 ms 9728 KB Output is correct
99 Correct 6 ms 9856 KB Output is correct
100 Correct 7 ms 9856 KB Output is correct
101 Correct 11 ms 10624 KB Output is correct
102 Correct 13 ms 10240 KB Output is correct
103 Correct 104 ms 19816 KB Output is correct
104 Correct 95 ms 19816 KB Output is correct
105 Correct 87 ms 17132 KB Output is correct
106 Correct 68 ms 19744 KB Output is correct
107 Correct 72 ms 15080 KB Output is correct
108 Correct 68 ms 15440 KB Output is correct
109 Correct 46 ms 14952 KB Output is correct
110 Correct 44 ms 14952 KB Output is correct
111 Correct 77 ms 19048 KB Output is correct
112 Correct 87 ms 18408 KB Output is correct
113 Correct 62 ms 15080 KB Output is correct
114 Correct 73 ms 19728 KB Output is correct
115 Correct 68 ms 19816 KB Output is correct