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Submission #718864

# Submission time Handle Problem Language Result Execution time Memory
718864 2023-04-05T03:03:35 Z Yell0 Arranging Shoes (IOI19_shoes) C++17
100 / 100
 74 ms 15176 KB 
#include <bits/stdc++.h>
 
using namespace std;
const int MN=1e5+2;
typedef long long ll;
struct bit {
  vector<int> arr;
  bit(int sz) {
    arr=vector<int>(sz,0);
  }
  void upd(int i,int v) {
    for(;i<(int)arr.size();i+=-i&i) arr[i]+=v;
  }
  int qry(int i) {
    int ret=0;
    for(;i>0;i-=-i&i) ret+=arr[i];
    return ret;
  }
};

ll count_swaps(vector<int> S) {
  ll N=S.size()/2,ans=0,sub=0;
  bit bit(N*2+2);
  vector<int> sti(N*2+2,0),edi(N*2+2,0);
  S.insert(S.begin(),0);
  vector<vector<int>> pos(2*MN);
  for(int i=1;i<=2*N;++i) pos[S[i]+N].push_back(i);
  for(int i=0;i<N;++i)
    for(int j=0;j<(int)pos[i].size();++j) {
      ans+=(pos[N+N-i][j]<pos[i][j]);
      int f=min(pos[N+N-i][j],pos[i][j]),s=max(pos[N+N-i][j],pos[i][j]);
      sti[s]=f;
      edi[f]=s;
    }
  for(int i=1;i<=2*N;++i) {
    if(sti[i]) {
      bit.upd(sti[i],-2);
      if(sti[i]==i-1) {
        bit.upd(sti[i],1);
        continue; 
      }
      ans+=i-sti[i]-1;
      sub+=bit.qry(i)-bit.qry(sti[i]);
      bit.upd(i,1);
    } else bit.upd(i,1);
  }
  return ans-sub/2;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 5076 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4980 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 3 ms 4948 KB Output is correct
23 Correct 2 ms 4948 KB Output is correct
24 Correct 3 ms 4948 KB Output is correct
25 Correct 3 ms 4948 KB Output is correct
26 Correct 2 ms 4948 KB Output is correct
27 Correct 3 ms 4948 KB Output is correct
28 Correct 3 ms 4948 KB Output is correct
29 Correct 3 ms 4948 KB Output is correct
30 Correct 3 ms 4892 KB Output is correct
31 Correct 3 ms 4948 KB Output is correct
32 Correct 3 ms 4948 KB Output is correct
33 Correct 3 ms 4948 KB Output is correct
34 Correct 3 ms 4992 KB Output is correct
35 Correct 3 ms 4948 KB Output is correct
36 Correct 3 ms 4948 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4920 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 3 ms 4932 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4944 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 2 ms 4948 KB Output is correct
15 Correct 2 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 5 ms 5588 KB Output is correct
21 Correct 5 ms 5588 KB Output is correct
22 Correct 35 ms 10552 KB Output is correct
23 Correct 29 ms 10072 KB Output is correct
24 Correct 32 ms 10296 KB Output is correct
25 Correct 28 ms 10120 KB Output is correct
26 Correct 33 ms 10156 KB Output is correct
27 Correct 28 ms 10180 KB Output is correct
28 Correct 28 ms 10160 KB Output is correct
29 Correct 28 ms 10208 KB Output is correct
30 Correct 28 ms 10180 KB Output is correct
31 Correct 33 ms 10156 KB Output is correct
32 Correct 28 ms 10172 KB Output is correct
33 Correct 28 ms 10160 KB Output is correct
34 Correct 32 ms 10168 KB Output is correct
35 Correct 3 ms 4948 KB Output is correct
36 Correct 3 ms 4948 KB Output is correct
37 Correct 29 ms 10172 KB Output is correct
38 Correct 30 ms 10168 KB Output is correct
39 Correct 29 ms 10240 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 54 ms 15172 KB Output is correct
6 Correct 39 ms 10300 KB Output is correct
7 Correct 57 ms 15148 KB Output is correct
8 Correct 29 ms 10024 KB Output is correct
9 Correct 56 ms 15148 KB Output is correct
10 Correct 46 ms 12076 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 5076 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4980 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 3 ms 4948 KB Output is correct
23 Correct 2 ms 4948 KB Output is correct
24 Correct 3 ms 4948 KB Output is correct
25 Correct 3 ms 4948 KB Output is correct
26 Correct 2 ms 4948 KB Output is correct
27 Correct 3 ms 4948 KB Output is correct
28 Correct 3 ms 4948 KB Output is correct
29 Correct 3 ms 4948 KB Output is correct
30 Correct 3 ms 4892 KB Output is correct
31 Correct 3 ms 4948 KB Output is correct
32 Correct 3 ms 4948 KB Output is correct
33 Correct 3 ms 4948 KB Output is correct
34 Correct 3 ms 4992 KB Output is correct
35 Correct 3 ms 4948 KB Output is correct
36 Correct 3 ms 4948 KB Output is correct
37 Correct 4 ms 4948 KB Output is correct
38 Correct 3 ms 4948 KB Output is correct
39 Correct 3 ms 4948 KB Output is correct
40 Correct 3 ms 4948 KB Output is correct
41 Correct 3 ms 5076 KB Output is correct
42 Correct 3 ms 5076 KB Output is correct
43 Correct 3 ms 5076 KB Output is correct
44 Correct 3 ms 5076 KB Output is correct
45 Correct 3 ms 5076 KB Output is correct
46 Correct 3 ms 4948 KB Output is correct
47 Correct 3 ms 4948 KB Output is correct
48 Correct 3 ms 4948 KB Output is correct
49 Correct 3 ms 4948 KB Output is correct
50 Correct 3 ms 4948 KB Output is correct
51 Correct 3 ms 4948 KB Output is correct
52 Correct 4 ms 5076 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 5076 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 4980 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 2 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 3 ms 4948 KB Output is correct
23 Correct 2 ms 4948 KB Output is correct
24 Correct 3 ms 4948 KB Output is correct
25 Correct 3 ms 4948 KB Output is correct
26 Correct 2 ms 4948 KB Output is correct
27 Correct 3 ms 4948 KB Output is correct
28 Correct 3 ms 4948 KB Output is correct
29 Correct 3 ms 4948 KB Output is correct
30 Correct 3 ms 4892 KB Output is correct
31 Correct 3 ms 4948 KB Output is correct
32 Correct 3 ms 4948 KB Output is correct
33 Correct 3 ms 4948 KB Output is correct
34 Correct 3 ms 4992 KB Output is correct
35 Correct 3 ms 4948 KB Output is correct
36 Correct 3 ms 4948 KB Output is correct
37 Correct 2 ms 4948 KB Output is correct
38 Correct 2 ms 4948 KB Output is correct
39 Correct 3 ms 4920 KB Output is correct
40 Correct 3 ms 4948 KB Output is correct
41 Correct 3 ms 4948 KB Output is correct
42 Correct 3 ms 4948 KB Output is correct
43 Correct 2 ms 4948 KB Output is correct
44 Correct 3 ms 4932 KB Output is correct
45 Correct 3 ms 4948 KB Output is correct
46 Correct 3 ms 4944 KB Output is correct
47 Correct 3 ms 4948 KB Output is correct
48 Correct 2 ms 4948 KB Output is correct
49 Correct 2 ms 4948 KB Output is correct
50 Correct 3 ms 4948 KB Output is correct
51 Correct 3 ms 4948 KB Output is correct
52 Correct 3 ms 4948 KB Output is correct
53 Correct 3 ms 4948 KB Output is correct
54 Correct 5 ms 5588 KB Output is correct
55 Correct 5 ms 5588 KB Output is correct
56 Correct 35 ms 10552 KB Output is correct
57 Correct 29 ms 10072 KB Output is correct
58 Correct 32 ms 10296 KB Output is correct
59 Correct 28 ms 10120 KB Output is correct
60 Correct 33 ms 10156 KB Output is correct
61 Correct 28 ms 10180 KB Output is correct
62 Correct 28 ms 10160 KB Output is correct
63 Correct 28 ms 10208 KB Output is correct
64 Correct 28 ms 10180 KB Output is correct
65 Correct 33 ms 10156 KB Output is correct
66 Correct 28 ms 10172 KB Output is correct
67 Correct 28 ms 10160 KB Output is correct
68 Correct 32 ms 10168 KB Output is correct
69 Correct 3 ms 4948 KB Output is correct
70 Correct 3 ms 4948 KB Output is correct
71 Correct 29 ms 10172 KB Output is correct
72 Correct 30 ms 10168 KB Output is correct
73 Correct 29 ms 10240 KB Output is correct
74 Correct 3 ms 4948 KB Output is correct
75 Correct 3 ms 4948 KB Output is correct
76 Correct 3 ms 4948 KB Output is correct
77 Correct 3 ms 4948 KB Output is correct
78 Correct 54 ms 15172 KB Output is correct
79 Correct 39 ms 10300 KB Output is correct
80 Correct 57 ms 15148 KB Output is correct
81 Correct 29 ms 10024 KB Output is correct
82 Correct 56 ms 15148 KB Output is correct
83 Correct 46 ms 12076 KB Output is correct
84 Correct 4 ms 4948 KB Output is correct
85 Correct 3 ms 4948 KB Output is correct
86 Correct 3 ms 4948 KB Output is correct
87 Correct 3 ms 4948 KB Output is correct
88 Correct 3 ms 5076 KB Output is correct
89 Correct 3 ms 5076 KB Output is correct
90 Correct 3 ms 5076 KB Output is correct
91 Correct 3 ms 5076 KB Output is correct
92 Correct 3 ms 5076 KB Output is correct
93 Correct 3 ms 4948 KB Output is correct
94 Correct 3 ms 4948 KB Output is correct
95 Correct 3 ms 4948 KB Output is correct
96 Correct 3 ms 4948 KB Output is correct
97 Correct 3 ms 4948 KB Output is correct
98 Correct 3 ms 4948 KB Output is correct
99 Correct 4 ms 5076 KB Output is correct
100 Correct 3 ms 5076 KB Output is correct
101 Correct 7 ms 5836 KB Output is correct
102 Correct 7 ms 5588 KB Output is correct
103 Correct 69 ms 15168 KB Output is correct
104 Correct 59 ms 15176 KB Output is correct
105 Correct 61 ms 12484 KB Output is correct
106 Correct 55 ms 15160 KB Output is correct
107 Correct 40 ms 10428 KB Output is correct
108 Correct 44 ms 10812 KB Output is correct
109 Correct 30 ms 10268 KB Output is correct
110 Correct 30 ms 10168 KB Output is correct
111 Correct 59 ms 14380 KB Output is correct
112 Correct 74 ms 13800 KB Output is correct
113 Correct 38 ms 10412 KB Output is correct
114 Correct 56 ms 15164 KB Output is correct
115 Correct 57 ms 15152 KB Output is correct