oj.uz

Submission #242416

# Submission time Handle Problem Language Result Execution time Memory
242416 2020-06-27T15:59:07 Z quocnguyen1012 Arranging Shoes (IOI19_shoes) C++14
100 / 100
 205 ms 140664 KB 
#ifndef LOCAL
#include "shoes.h"
#endif // LOCAL
#include <bits/stdc++.h>

#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define eb emplace_back
#define ar array

using namespace std;
typedef long long ll;
typedef pair<int, int> ii;

const int maxn = 1e5 + 5;

int N;
queue<int> same[2 * maxn];
int bit[2 * maxn], go[2 * maxn];
int rem[2 * maxn];

void upd(int i, int v)
{
  for(++i; i < 2 * maxn; i += i & -i)
    bit[i] += v;
}

int sum(int i)
{
  int res = 0;
  for(++i; i; i -= i & -i)
    res += bit[i];
  return res;
}

long long count_swaps(vector<int> a)
{
  ll res = 0;
  N = a.size();
  for(int i = 0; i < N; ++i){
    if(same[abs(a[i])].empty() || a[same[abs(a[i])].front()] == a[i]){
      same[abs(a[i])].push(i);
      if(a[i] > 0) ++res;
    }
    else{
      go[i] = same[abs(a[i])].front();
      go[same[abs(a[i])].front()] = i;
      same[abs(a[i])].pop();
    }
  }
  for(int i = 0; i < N; ++i)
    upd(i, 1), rem[i] = 1;
  for(int i = 0; i < N; ++i){
    assert(same[i].empty());
  }
  for(int i = 0; i < N; ++i){
    if(rem[i]){
      int nxt = go[i];
      res += sum(nxt - 1) - 1;
      rem[i] = rem[nxt] = 0;
      upd(i, -1); upd(nxt, -1);
    }
  }
  return res;
}

#ifdef LOCAL
signed main(void)
{
  ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  #ifdef LOCAL
    freopen("A.INP", "r", stdin);
    freopen("A.OUT", "w", stdout);
  #endif // LOCAL
  int n; cin >> n;
  vector<int> a(2 * n);
  for(auto & it : a) cin >> it;
  cout << count_swaps(a);
}
#endif // LOCAL

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 110 ms 135160 KB Output is correct
2 Correct 98 ms 135032 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 110 ms 135160 KB Output is correct
2 Correct 98 ms 135032 KB Output is correct
3 Correct 104 ms 135032 KB Output is correct
4 Correct 94 ms 135032 KB Output is correct
5 Correct 101 ms 135032 KB Output is correct
6 Correct 92 ms 135032 KB Output is correct
7 Correct 95 ms 135032 KB Output is correct
8 Correct 109 ms 135032 KB Output is correct
9 Correct 102 ms 135016 KB Output is correct
10 Correct 94 ms 135032 KB Output is correct
11 Correct 98 ms 135032 KB Output is correct
12 Correct 95 ms 135032 KB Output is correct
13 Correct 100 ms 135032 KB Output is correct
14 Correct 99 ms 135032 KB Output is correct
15 Correct 98 ms 135032 KB Output is correct
16 Correct 95 ms 135032 KB Output is correct
17 Correct 103 ms 135088 KB Output is correct
18 Correct 98 ms 135032 KB Output is correct
19 Correct 107 ms 135032 KB Output is correct
20 Correct 95 ms 135032 KB Output is correct
21 Correct 91 ms 135032 KB Output is correct
22 Correct 91 ms 135032 KB Output is correct
23 Correct 91 ms 135032 KB Output is correct
24 Correct 100 ms 135032 KB Output is correct
25 Correct 95 ms 135032 KB Output is correct
26 Correct 96 ms 135032 KB Output is correct
27 Correct 107 ms 135160 KB Output is correct
28 Correct 101 ms 135032 KB Output is correct
29 Correct 93 ms 135032 KB Output is correct
30 Correct 93 ms 135032 KB Output is correct
31 Correct 100 ms 135032 KB Output is correct
32 Correct 94 ms 135032 KB Output is correct
33 Correct 107 ms 135008 KB Output is correct
34 Correct 114 ms 135032 KB Output is correct
35 Correct 98 ms 135036 KB Output is correct
36 Correct 96 ms 135032 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 110 ms 135160 KB Output is correct
2 Correct 98 ms 135032 KB Output is correct
3 Correct 96 ms 135032 KB Output is correct
4 Correct 94 ms 135032 KB Output is correct
5 Correct 94 ms 135032 KB Output is correct
6 Correct 102 ms 135032 KB Output is correct
7 Correct 95 ms 135032 KB Output is correct
8 Correct 97 ms 135032 KB Output is correct
9 Correct 108 ms 135032 KB Output is correct
10 Correct 106 ms 135032 KB Output is correct
11 Correct 105 ms 135032 KB Output is correct
12 Correct 110 ms 135032 KB Output is correct
13 Correct 110 ms 135032 KB Output is correct
14 Correct 93 ms 135032 KB Output is correct
15 Correct 99 ms 135032 KB Output is correct
16 Correct 96 ms 135032 KB Output is correct
17 Correct 106 ms 135032 KB Output is correct
18 Correct 101 ms 135032 KB Output is correct
19 Correct 103 ms 135032 KB Output is correct
20 Correct 116 ms 135544 KB Output is correct
21 Correct 96 ms 135416 KB Output is correct
22 Correct 142 ms 140280 KB Output is correct
23 Correct 145 ms 140152 KB Output is correct
24 Correct 149 ms 140152 KB Output is correct
25 Correct 147 ms 140384 KB Output is correct
26 Correct 142 ms 140152 KB Output is correct
27 Correct 144 ms 140024 KB Output is correct
28 Correct 163 ms 140536 KB Output is correct
29 Correct 145 ms 140536 KB Output is correct
30 Correct 138 ms 140664 KB Output is correct
31 Correct 143 ms 140152 KB Output is correct
32 Correct 153 ms 140536 KB Output is correct
33 Correct 140 ms 140408 KB Output is correct
34 Correct 149 ms 140536 KB Output is correct
35 Correct 94 ms 135036 KB Output is correct
36 Correct 94 ms 135032 KB Output is correct
37 Correct 142 ms 140536 KB Output is correct
38 Correct 140 ms 140536 KB Output is correct
39 Correct 142 ms 140536 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 101 ms 135032 KB Output is correct
2 Correct 96 ms 135032 KB Output is correct
3 Correct 107 ms 135032 KB Output is correct
4 Correct 96 ms 135032 KB Output is correct
5 Correct 173 ms 140152 KB Output is correct
6 Correct 157 ms 140152 KB Output is correct
7 Correct 202 ms 140284 KB Output is correct
8 Correct 143 ms 140536 KB Output is correct
9 Correct 175 ms 140152 KB Output is correct
10 Correct 170 ms 140140 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 110 ms 135160 KB Output is correct
2 Correct 98 ms 135032 KB Output is correct
3 Correct 104 ms 135032 KB Output is correct
4 Correct 94 ms 135032 KB Output is correct
5 Correct 101 ms 135032 KB Output is correct
6 Correct 92 ms 135032 KB Output is correct
7 Correct 95 ms 135032 KB Output is correct
8 Correct 109 ms 135032 KB Output is correct
9 Correct 102 ms 135016 KB Output is correct
10 Correct 94 ms 135032 KB Output is correct
11 Correct 98 ms 135032 KB Output is correct
12 Correct 95 ms 135032 KB Output is correct
13 Correct 100 ms 135032 KB Output is correct
14 Correct 99 ms 135032 KB Output is correct
15 Correct 98 ms 135032 KB Output is correct
16 Correct 95 ms 135032 KB Output is correct
17 Correct 103 ms 135088 KB Output is correct
18 Correct 98 ms 135032 KB Output is correct
19 Correct 107 ms 135032 KB Output is correct
20 Correct 95 ms 135032 KB Output is correct
21 Correct 91 ms 135032 KB Output is correct
22 Correct 91 ms 135032 KB Output is correct
23 Correct 91 ms 135032 KB Output is correct
24 Correct 100 ms 135032 KB Output is correct
25 Correct 95 ms 135032 KB Output is correct
26 Correct 96 ms 135032 KB Output is correct
27 Correct 107 ms 135160 KB Output is correct
28 Correct 101 ms 135032 KB Output is correct
29 Correct 93 ms 135032 KB Output is correct
30 Correct 93 ms 135032 KB Output is correct
31 Correct 100 ms 135032 KB Output is correct
32 Correct 94 ms 135032 KB Output is correct
33 Correct 107 ms 135008 KB Output is correct
34 Correct 114 ms 135032 KB Output is correct
35 Correct 98 ms 135036 KB Output is correct
36 Correct 96 ms 135032 KB Output is correct
37 Correct 98 ms 135036 KB Output is correct
38 Correct 97 ms 135032 KB Output is correct
39 Correct 94 ms 135032 KB Output is correct
40 Correct 98 ms 135032 KB Output is correct
41 Correct 95 ms 135032 KB Output is correct
42 Correct 102 ms 135072 KB Output is correct
43 Correct 95 ms 135032 KB Output is correct
44 Correct 97 ms 135032 KB Output is correct
45 Correct 100 ms 135032 KB Output is correct
46 Correct 106 ms 135032 KB Output is correct
47 Correct 94 ms 135032 KB Output is correct
48 Correct 93 ms 135036 KB Output is correct
49 Correct 96 ms 135032 KB Output is correct
50 Correct 103 ms 135032 KB Output is correct
51 Correct 118 ms 134972 KB Output is correct
52 Correct 99 ms 135008 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 110 ms 135160 KB Output is correct
2 Correct 98 ms 135032 KB Output is correct
3 Correct 104 ms 135032 KB Output is correct
4 Correct 94 ms 135032 KB Output is correct
5 Correct 101 ms 135032 KB Output is correct
6 Correct 92 ms 135032 KB Output is correct
7 Correct 95 ms 135032 KB Output is correct
8 Correct 109 ms 135032 KB Output is correct
9 Correct 102 ms 135016 KB Output is correct
10 Correct 94 ms 135032 KB Output is correct
11 Correct 98 ms 135032 KB Output is correct
12 Correct 95 ms 135032 KB Output is correct
13 Correct 100 ms 135032 KB Output is correct
14 Correct 99 ms 135032 KB Output is correct
15 Correct 98 ms 135032 KB Output is correct
16 Correct 95 ms 135032 KB Output is correct
17 Correct 103 ms 135088 KB Output is correct
18 Correct 98 ms 135032 KB Output is correct
19 Correct 107 ms 135032 KB Output is correct
20 Correct 95 ms 135032 KB Output is correct
21 Correct 91 ms 135032 KB Output is correct
22 Correct 91 ms 135032 KB Output is correct
23 Correct 91 ms 135032 KB Output is correct
24 Correct 100 ms 135032 KB Output is correct
25 Correct 95 ms 135032 KB Output is correct
26 Correct 96 ms 135032 KB Output is correct
27 Correct 107 ms 135160 KB Output is correct
28 Correct 101 ms 135032 KB Output is correct
29 Correct 93 ms 135032 KB Output is correct
30 Correct 93 ms 135032 KB Output is correct
31 Correct 100 ms 135032 KB Output is correct
32 Correct 94 ms 135032 KB Output is correct
33 Correct 107 ms 135008 KB Output is correct
34 Correct 114 ms 135032 KB Output is correct
35 Correct 98 ms 135036 KB Output is correct
36 Correct 96 ms 135032 KB Output is correct
37 Correct 96 ms 135032 KB Output is correct
38 Correct 94 ms 135032 KB Output is correct
39 Correct 94 ms 135032 KB Output is correct
40 Correct 102 ms 135032 KB Output is correct
41 Correct 95 ms 135032 KB Output is correct
42 Correct 97 ms 135032 KB Output is correct
43 Correct 108 ms 135032 KB Output is correct
44 Correct 106 ms 135032 KB Output is correct
45 Correct 105 ms 135032 KB Output is correct
46 Correct 110 ms 135032 KB Output is correct
47 Correct 110 ms 135032 KB Output is correct
48 Correct 93 ms 135032 KB Output is correct
49 Correct 99 ms 135032 KB Output is correct
50 Correct 96 ms 135032 KB Output is correct
51 Correct 106 ms 135032 KB Output is correct
52 Correct 101 ms 135032 KB Output is correct
53 Correct 103 ms 135032 KB Output is correct
54 Correct 116 ms 135544 KB Output is correct
55 Correct 96 ms 135416 KB Output is correct
56 Correct 142 ms 140280 KB Output is correct
57 Correct 145 ms 140152 KB Output is correct
58 Correct 149 ms 140152 KB Output is correct
59 Correct 147 ms 140384 KB Output is correct
60 Correct 142 ms 140152 KB Output is correct
61 Correct 144 ms 140024 KB Output is correct
62 Correct 163 ms 140536 KB Output is correct
63 Correct 145 ms 140536 KB Output is correct
64 Correct 138 ms 140664 KB Output is correct
65 Correct 143 ms 140152 KB Output is correct
66 Correct 153 ms 140536 KB Output is correct
67 Correct 140 ms 140408 KB Output is correct
68 Correct 149 ms 140536 KB Output is correct
69 Correct 94 ms 135036 KB Output is correct
70 Correct 94 ms 135032 KB Output is correct
71 Correct 142 ms 140536 KB Output is correct
72 Correct 140 ms 140536 KB Output is correct
73 Correct 142 ms 140536 KB Output is correct
74 Correct 101 ms 135032 KB Output is correct
75 Correct 96 ms 135032 KB Output is correct
76 Correct 107 ms 135032 KB Output is correct
77 Correct 96 ms 135032 KB Output is correct
78 Correct 173 ms 140152 KB Output is correct
79 Correct 157 ms 140152 KB Output is correct
80 Correct 202 ms 140284 KB Output is correct
81 Correct 143 ms 140536 KB Output is correct
82 Correct 175 ms 140152 KB Output is correct
83 Correct 170 ms 140140 KB Output is correct
84 Correct 98 ms 135036 KB Output is correct
85 Correct 97 ms 135032 KB Output is correct
86 Correct 94 ms 135032 KB Output is correct
87 Correct 98 ms 135032 KB Output is correct
88 Correct 95 ms 135032 KB Output is correct
89 Correct 102 ms 135072 KB Output is correct
90 Correct 95 ms 135032 KB Output is correct
91 Correct 97 ms 135032 KB Output is correct
92 Correct 100 ms 135032 KB Output is correct
93 Correct 106 ms 135032 KB Output is correct
94 Correct 94 ms 135032 KB Output is correct
95 Correct 93 ms 135036 KB Output is correct
96 Correct 96 ms 135032 KB Output is correct
97 Correct 103 ms 135032 KB Output is correct
98 Correct 118 ms 134972 KB Output is correct
99 Correct 99 ms 135008 KB Output is correct
100 Correct 102 ms 135160 KB Output is correct
101 Correct 100 ms 135520 KB Output is correct
102 Correct 102 ms 135416 KB Output is correct
103 Correct 177 ms 140152 KB Output is correct
104 Correct 170 ms 140280 KB Output is correct
105 Correct 191 ms 140152 KB Output is correct
106 Correct 177 ms 140280 KB Output is correct
107 Correct 164 ms 140140 KB Output is correct
108 Correct 159 ms 140076 KB Output is correct
109 Correct 154 ms 140592 KB Output is correct
110 Correct 151 ms 140536 KB Output is correct
111 Correct 177 ms 140152 KB Output is correct
112 Correct 175 ms 140288 KB Output is correct
113 Correct 157 ms 140152 KB Output is correct
114 Correct 205 ms 140152 KB Output is correct
115 Correct 182 ms 140260 KB Output is correct