oj.uz

Submission #893503

# Submission time Handle Problem Language Result Execution time Memory
893503 2023-12-27T05:56:04 Z KaleemRazaSyed Arranging Shoes (IOI19_shoes) C++17
100 / 100
 49 ms 15196 KB 
#include<bits/stdc++.h>

using namespace std;

const int N = 1e5+5;
vector<int> v[N][2];
int ft[2 * N];

void update(int i)
{
  while(i < 2 * N)
    {
      ft[i]++;
      i += (i & -i);
    }
}
int sm(int i)
{
  int ans = 0;
  while(i > 0)
    {
      ans += ft[i];
      i -= (i & -i);
    }
  return ans;
}

long long count_swaps(vector<int> S)
{
  int tn = S.size(); // two  * n
  for(int i = tn - 1; i >= 0; i--)
    {
      if(S[i] > 0) v[S[i]][0].push_back(i);
      else v[-S[i]][1].push_back(i);
    }
  
  bool paired[tn];
  long long ans = 0;
  memset(paired, false, sizeof(paired));
  for(int i = 0; i < tn; i++)
    {
      if(paired[i]) continue;
      int val = -S[i], j;
      if(val > 0)
	{
	  while(paired[v[val][0].back()]) v[val][0].pop_back();
	  j = v[val][0].back();
	  v[val][0].pop_back();
	}
      else
	{
	  while(paired[v[-val][1].back()]) v[-val][1].pop_back();
	  j = v[-val][1].back();
	  v[-val][1].pop_back();
	}
      paired[i] = paired[j] = true;
      ans += j - i - 1;
      ans -= sm(j + 1) - sm(i + 1);
      update(i + 1);
      update(j + 1);
      if(S[i] > 0) ans++;
    }
  return ans;
}

/*int main()
{
  int n;
  cin >> n;
  vector<int> S(2 * n);
  for(int & i : S) cin >> i;
  cout << count_swaps(S) << endl;
  return 0;
}
*/

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5724 KB Output is correct
2 Correct 2 ms 5724 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5724 KB Output is correct
2 Correct 2 ms 5724 KB Output is correct
3 Correct 2 ms 5720 KB Output is correct
4 Correct 2 ms 5720 KB Output is correct
5 Correct 2 ms 5724 KB Output is correct
6 Correct 2 ms 5724 KB Output is correct
7 Correct 2 ms 5976 KB Output is correct
8 Correct 2 ms 5552 KB Output is correct
9 Correct 2 ms 5724 KB Output is correct
10 Correct 2 ms 5556 KB Output is correct
11 Correct 2 ms 5724 KB Output is correct
12 Correct 1 ms 5724 KB Output is correct
13 Correct 2 ms 5724 KB Output is correct
14 Correct 2 ms 5724 KB Output is correct
15 Correct 2 ms 5724 KB Output is correct
16 Correct 2 ms 5724 KB Output is correct
17 Correct 2 ms 5724 KB Output is correct
18 Correct 2 ms 5724 KB Output is correct
19 Correct 1 ms 5724 KB Output is correct
20 Correct 2 ms 5744 KB Output is correct
21 Correct 2 ms 5724 KB Output is correct
22 Correct 2 ms 5976 KB Output is correct
23 Correct 2 ms 5736 KB Output is correct
24 Correct 1 ms 5556 KB Output is correct
25 Correct 2 ms 5736 KB Output is correct
26 Correct 1 ms 5724 KB Output is correct
27 Correct 2 ms 5724 KB Output is correct
28 Correct 1 ms 5724 KB Output is correct
29 Correct 1 ms 5724 KB Output is correct
30 Correct 1 ms 5724 KB Output is correct
31 Correct 1 ms 5724 KB Output is correct
32 Correct 2 ms 5724 KB Output is correct
33 Correct 2 ms 5724 KB Output is correct
34 Correct 2 ms 5724 KB Output is correct
35 Correct 2 ms 5724 KB Output is correct
36 Correct 2 ms 5724 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5724 KB Output is correct
2 Correct 2 ms 5724 KB Output is correct
3 Correct 2 ms 5920 KB Output is correct
4 Correct 2 ms 5724 KB Output is correct
5 Correct 1 ms 5724 KB Output is correct
6 Correct 2 ms 5724 KB Output is correct
7 Correct 2 ms 5720 KB Output is correct
8 Correct 2 ms 5724 KB Output is correct
9 Correct 1 ms 5720 KB Output is correct
10 Correct 1 ms 5724 KB Output is correct
11 Correct 2 ms 5724 KB Output is correct
12 Correct 2 ms 5736 KB Output is correct
13 Correct 2 ms 5724 KB Output is correct
14 Correct 2 ms 5724 KB Output is correct
15 Correct 1 ms 5724 KB Output is correct
16 Correct 2 ms 5724 KB Output is correct
17 Correct 2 ms 5720 KB Output is correct
18 Correct 2 ms 5724 KB Output is correct
19 Correct 2 ms 5724 KB Output is correct
20 Correct 4 ms 6236 KB Output is correct
21 Correct 5 ms 6236 KB Output is correct
22 Correct 33 ms 9692 KB Output is correct
23 Correct 29 ms 9924 KB Output is correct
24 Correct 26 ms 9716 KB Output is correct
25 Correct 33 ms 9628 KB Output is correct
26 Correct 38 ms 9928 KB Output is correct
27 Correct 26 ms 9676 KB Output is correct
28 Correct 32 ms 9704 KB Output is correct
29 Correct 22 ms 9812 KB Output is correct
30 Correct 23 ms 9804 KB Output is correct
31 Correct 38 ms 9848 KB Output is correct
32 Correct 22 ms 9824 KB Output is correct
33 Correct 21 ms 9552 KB Output is correct
34 Correct 26 ms 9812 KB Output is correct
35 Correct 2 ms 5724 KB Output is correct
36 Correct 2 ms 5724 KB Output is correct
37 Correct 21 ms 9804 KB Output is correct
38 Correct 21 ms 9812 KB Output is correct
39 Correct 23 ms 9808 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5720 KB Output is correct
2 Correct 2 ms 5724 KB Output is correct
3 Correct 2 ms 5548 KB Output is correct
4 Correct 2 ms 5720 KB Output is correct
5 Correct 35 ms 15108 KB Output is correct
6 Correct 27 ms 10332 KB Output is correct
7 Correct 33 ms 14940 KB Output is correct
8 Correct 22 ms 9868 KB Output is correct
9 Correct 39 ms 15120 KB Output is correct
10 Correct 35 ms 11884 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5724 KB Output is correct
2 Correct 2 ms 5724 KB Output is correct
3 Correct 2 ms 5720 KB Output is correct
4 Correct 2 ms 5720 KB Output is correct
5 Correct 2 ms 5724 KB Output is correct
6 Correct 2 ms 5724 KB Output is correct
7 Correct 2 ms 5976 KB Output is correct
8 Correct 2 ms 5552 KB Output is correct
9 Correct 2 ms 5724 KB Output is correct
10 Correct 2 ms 5556 KB Output is correct
11 Correct 2 ms 5724 KB Output is correct
12 Correct 1 ms 5724 KB Output is correct
13 Correct 2 ms 5724 KB Output is correct
14 Correct 2 ms 5724 KB Output is correct
15 Correct 2 ms 5724 KB Output is correct
16 Correct 2 ms 5724 KB Output is correct
17 Correct 2 ms 5724 KB Output is correct
18 Correct 2 ms 5724 KB Output is correct
19 Correct 1 ms 5724 KB Output is correct
20 Correct 2 ms 5744 KB Output is correct
21 Correct 2 ms 5724 KB Output is correct
22 Correct 2 ms 5976 KB Output is correct
23 Correct 2 ms 5736 KB Output is correct
24 Correct 1 ms 5556 KB Output is correct
25 Correct 2 ms 5736 KB Output is correct
26 Correct 1 ms 5724 KB Output is correct
27 Correct 2 ms 5724 KB Output is correct
28 Correct 1 ms 5724 KB Output is correct
29 Correct 1 ms 5724 KB Output is correct
30 Correct 1 ms 5724 KB Output is correct
31 Correct 1 ms 5724 KB Output is correct
32 Correct 2 ms 5724 KB Output is correct
33 Correct 2 ms 5724 KB Output is correct
34 Correct 2 ms 5724 KB Output is correct
35 Correct 2 ms 5724 KB Output is correct
36 Correct 2 ms 5724 KB Output is correct
37 Correct 2 ms 5720 KB Output is correct
38 Correct 2 ms 5724 KB Output is correct
39 Correct 2 ms 5724 KB Output is correct
40 Correct 2 ms 5724 KB Output is correct
41 Correct 2 ms 5724 KB Output is correct
42 Correct 2 ms 5724 KB Output is correct
43 Correct 2 ms 5724 KB Output is correct
44 Correct 2 ms 5724 KB Output is correct
45 Correct 2 ms 5720 KB Output is correct
46 Correct 2 ms 5724 KB Output is correct
47 Correct 2 ms 5724 KB Output is correct
48 Correct 2 ms 5724 KB Output is correct
49 Correct 2 ms 5724 KB Output is correct
50 Correct 2 ms 5724 KB Output is correct
51 Correct 2 ms 5720 KB Output is correct
52 Correct 2 ms 5724 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5724 KB Output is correct
2 Correct 2 ms 5724 KB Output is correct
3 Correct 2 ms 5720 KB Output is correct
4 Correct 2 ms 5720 KB Output is correct
5 Correct 2 ms 5724 KB Output is correct
6 Correct 2 ms 5724 KB Output is correct
7 Correct 2 ms 5976 KB Output is correct
8 Correct 2 ms 5552 KB Output is correct
9 Correct 2 ms 5724 KB Output is correct
10 Correct 2 ms 5556 KB Output is correct
11 Correct 2 ms 5724 KB Output is correct
12 Correct 1 ms 5724 KB Output is correct
13 Correct 2 ms 5724 KB Output is correct
14 Correct 2 ms 5724 KB Output is correct
15 Correct 2 ms 5724 KB Output is correct
16 Correct 2 ms 5724 KB Output is correct
17 Correct 2 ms 5724 KB Output is correct
18 Correct 2 ms 5724 KB Output is correct
19 Correct 1 ms 5724 KB Output is correct
20 Correct 2 ms 5744 KB Output is correct
21 Correct 2 ms 5724 KB Output is correct
22 Correct 2 ms 5976 KB Output is correct
23 Correct 2 ms 5736 KB Output is correct
24 Correct 1 ms 5556 KB Output is correct
25 Correct 2 ms 5736 KB Output is correct
26 Correct 1 ms 5724 KB Output is correct
27 Correct 2 ms 5724 KB Output is correct
28 Correct 1 ms 5724 KB Output is correct
29 Correct 1 ms 5724 KB Output is correct
30 Correct 1 ms 5724 KB Output is correct
31 Correct 1 ms 5724 KB Output is correct
32 Correct 2 ms 5724 KB Output is correct
33 Correct 2 ms 5724 KB Output is correct
34 Correct 2 ms 5724 KB Output is correct
35 Correct 2 ms 5724 KB Output is correct
36 Correct 2 ms 5724 KB Output is correct
37 Correct 2 ms 5920 KB Output is correct
38 Correct 2 ms 5724 KB Output is correct
39 Correct 1 ms 5724 KB Output is correct
40 Correct 2 ms 5724 KB Output is correct
41 Correct 2 ms 5720 KB Output is correct
42 Correct 2 ms 5724 KB Output is correct
43 Correct 1 ms 5720 KB Output is correct
44 Correct 1 ms 5724 KB Output is correct
45 Correct 2 ms 5724 KB Output is correct
46 Correct 2 ms 5736 KB Output is correct
47 Correct 2 ms 5724 KB Output is correct
48 Correct 2 ms 5724 KB Output is correct
49 Correct 1 ms 5724 KB Output is correct
50 Correct 2 ms 5724 KB Output is correct
51 Correct 2 ms 5720 KB Output is correct
52 Correct 2 ms 5724 KB Output is correct
53 Correct 2 ms 5724 KB Output is correct
54 Correct 4 ms 6236 KB Output is correct
55 Correct 5 ms 6236 KB Output is correct
56 Correct 33 ms 9692 KB Output is correct
57 Correct 29 ms 9924 KB Output is correct
58 Correct 26 ms 9716 KB Output is correct
59 Correct 33 ms 9628 KB Output is correct
60 Correct 38 ms 9928 KB Output is correct
61 Correct 26 ms 9676 KB Output is correct
62 Correct 32 ms 9704 KB Output is correct
63 Correct 22 ms 9812 KB Output is correct
64 Correct 23 ms 9804 KB Output is correct
65 Correct 38 ms 9848 KB Output is correct
66 Correct 22 ms 9824 KB Output is correct
67 Correct 21 ms 9552 KB Output is correct
68 Correct 26 ms 9812 KB Output is correct
69 Correct 2 ms 5724 KB Output is correct
70 Correct 2 ms 5724 KB Output is correct
71 Correct 21 ms 9804 KB Output is correct
72 Correct 21 ms 9812 KB Output is correct
73 Correct 23 ms 9808 KB Output is correct
74 Correct 2 ms 5720 KB Output is correct
75 Correct 2 ms 5724 KB Output is correct
76 Correct 2 ms 5548 KB Output is correct
77 Correct 2 ms 5720 KB Output is correct
78 Correct 35 ms 15108 KB Output is correct
79 Correct 27 ms 10332 KB Output is correct
80 Correct 33 ms 14940 KB Output is correct
81 Correct 22 ms 9868 KB Output is correct
82 Correct 39 ms 15120 KB Output is correct
83 Correct 35 ms 11884 KB Output is correct
84 Correct 2 ms 5720 KB Output is correct
85 Correct 2 ms 5724 KB Output is correct
86 Correct 2 ms 5724 KB Output is correct
87 Correct 2 ms 5724 KB Output is correct
88 Correct 2 ms 5724 KB Output is correct
89 Correct 2 ms 5724 KB Output is correct
90 Correct 2 ms 5724 KB Output is correct
91 Correct 2 ms 5724 KB Output is correct
92 Correct 2 ms 5720 KB Output is correct
93 Correct 2 ms 5724 KB Output is correct
94 Correct 2 ms 5724 KB Output is correct
95 Correct 2 ms 5724 KB Output is correct
96 Correct 2 ms 5724 KB Output is correct
97 Correct 2 ms 5724 KB Output is correct
98 Correct 2 ms 5720 KB Output is correct
99 Correct 2 ms 5724 KB Output is correct
100 Correct 2 ms 5720 KB Output is correct
101 Correct 5 ms 6492 KB Output is correct
102 Correct 5 ms 6236 KB Output is correct
103 Correct 42 ms 15088 KB Output is correct
104 Correct 31 ms 15196 KB Output is correct
105 Correct 42 ms 12372 KB Output is correct
106 Correct 31 ms 15076 KB Output is correct
107 Correct 31 ms 10332 KB Output is correct
108 Correct 28 ms 10832 KB Output is correct
109 Correct 23 ms 9940 KB Output is correct
110 Correct 22 ms 9808 KB Output is correct
111 Correct 49 ms 14376 KB Output is correct
112 Correct 48 ms 13780 KB Output is correct
113 Correct 43 ms 10332 KB Output is correct
114 Correct 34 ms 15196 KB Output is correct
115 Correct 40 ms 15160 KB Output is correct