oj.uz

Submission #702775

# Submission time Handle Problem Language Result Execution time Memory
702775 2023-02-25T06:39:12 Z wenqi Arranging Shoes (IOI19_shoes) C++17
100 / 100
 74 ms 16340 KB 
#include "shoes.h"
#include <bits/stdc++.h>

using namespace std;
using ll = long long;

int N;
vector<int> mp[100069][2];

int bits[200069];

int query(int i)
{
    int sum = 0;
    while (i)
    {
        sum += bits[i];
        i -= i & -i;
    }
    return sum;
}

void update(int i)
{
    while (i <= 2 * N)
    {
        bits[i]++;
        i += i & -i;
    }
}

long long count_swaps(vector<int> s)
{
    N = s.size() / 2;
    for (int i = 0; i < 2 * N; i++)
        mp[abs(s[i])][s[i] > 0].push_back(i);
    vector<pair<int, int>> ps;
    for (int i = 1; i <= N; i++)
    {
        auto &A = mp[i][0];
        auto &B = mp[i][1];
        for (int j = 0; j < A.size(); j++)
            ps.push_back({A[j], B[j]});
    }
    sort(ps.begin(), ps.end(), [] (pair<int, int> a, pair<int, int> b) {
        int x = a.first + a.second + (a.second > a.first);
        int y = b.first + b.second + (b.second > b.first);
        return x < y;
    });
    vector<int> R(2 * N);
    int c = 1;
    for (auto [a, b] : ps)
    {
        R[a] = c++;
        R[b] = c++;
    }
    ll invs = 0;
    for (int i = 0; i < 2 * N; i++)
    {
        invs += i - query(R[i]);
        update(R[i]);
    }
    return invs;
}

Compilation message

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:42:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |         for (int j = 0; j < A.size(); j++)
      |                         ~~^~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 5008 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 5008 KB Output is correct
3 Correct 3 ms 5008 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 5004 KB Output is correct
7 Correct 3 ms 5004 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 5008 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 4 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 5004 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 5004 KB Output is correct
16 Correct 3 ms 5008 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 5008 KB Output is correct
20 Correct 3 ms 5008 KB Output is correct
21 Correct 3 ms 5008 KB Output is correct
22 Correct 3 ms 5004 KB Output is correct
23 Correct 3 ms 4948 KB Output is correct
24 Correct 3 ms 4948 KB Output is correct
25 Correct 4 ms 4948 KB Output is correct
26 Correct 3 ms 4948 KB Output is correct
27 Correct 3 ms 5008 KB Output is correct
28 Correct 3 ms 4948 KB Output is correct
29 Correct 3 ms 5008 KB Output is correct
30 Correct 3 ms 5008 KB Output is correct
31 Correct 3 ms 4948 KB Output is correct
32 Correct 3 ms 5008 KB Output is correct
33 Correct 3 ms 4948 KB Output is correct
34 Correct 3 ms 4960 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 3 ms 4948 KB Output is correct
2 Correct 3 ms 5008 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 5008 KB Output is correct
5 Correct 3 ms 4948 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 5012 KB Output is correct
9 Correct 2 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 5004 KB Output is correct
18 Correct 3 ms 5012 KB Output is correct
19 Correct 3 ms 5008 KB Output is correct
20 Correct 6 ms 5588 KB Output is correct
21 Correct 6 ms 5656 KB Output is correct
22 Correct 36 ms 10852 KB Output is correct
23 Correct 36 ms 10692 KB Output is correct
24 Correct 36 ms 10608 KB Output is correct
25 Correct 42 ms 10636 KB Output is correct
26 Correct 35 ms 10716 KB Output is correct
27 Correct 35 ms 10628 KB Output is correct
28 Correct 33 ms 10688 KB Output is correct
29 Correct 34 ms 10712 KB Output is correct
30 Correct 33 ms 10652 KB Output is correct
31 Correct 37 ms 10740 KB Output is correct
32 Correct 33 ms 10688 KB Output is correct
33 Correct 33 ms 10720 KB Output is correct
34 Correct 34 ms 10656 KB Output is correct
35 Correct 3 ms 4948 KB Output is correct
36 Correct 3 ms 4948 KB Output is correct
37 Correct 34 ms 10664 KB Output is correct
38 Correct 34 ms 10636 KB Output is correct
39 Correct 37 ms 10708 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 2 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 72 ms 16340 KB Output is correct
6 Correct 48 ms 11372 KB Output is correct
7 Correct 60 ms 16104 KB Output is correct
8 Correct 36 ms 10836 KB Output is correct
9 Correct 74 ms 16120 KB Output is correct
10 Correct 57 ms 13064 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 5008 KB Output is correct
3 Correct 3 ms 5008 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 5004 KB Output is correct
7 Correct 3 ms 5004 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 5008 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 4 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 5004 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 5004 KB Output is correct
16 Correct 3 ms 5008 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 5008 KB Output is correct
20 Correct 3 ms 5008 KB Output is correct
21 Correct 3 ms 5008 KB Output is correct
22 Correct 3 ms 5004 KB Output is correct
23 Correct 3 ms 4948 KB Output is correct
24 Correct 3 ms 4948 KB Output is correct
25 Correct 4 ms 4948 KB Output is correct
26 Correct 3 ms 4948 KB Output is correct
27 Correct 3 ms 5008 KB Output is correct
28 Correct 3 ms 4948 KB Output is correct
29 Correct 3 ms 5008 KB Output is correct
30 Correct 3 ms 5008 KB Output is correct
31 Correct 3 ms 4948 KB Output is correct
32 Correct 3 ms 5008 KB Output is correct
33 Correct 3 ms 4948 KB Output is correct
34 Correct 3 ms 4960 KB Output is correct
35 Correct 3 ms 4948 KB Output is correct
36 Correct 3 ms 4948 KB Output is correct
37 Correct 3 ms 4948 KB Output is correct
38 Correct 3 ms 4948 KB Output is correct
39 Correct 4 ms 4948 KB Output is correct
40 Correct 3 ms 4948 KB Output is correct
41 Correct 3 ms 5016 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 5016 KB Output is correct
45 Correct 3 ms 5076 KB Output is correct
46 Correct 3 ms 5076 KB Output is correct
47 Correct 3 ms 5016 KB Output is correct
48 Correct 3 ms 5028 KB Output is correct
49 Correct 3 ms 5016 KB Output is correct
50 Correct 3 ms 4948 KB Output is correct
51 Correct 3 ms 5020 KB Output is correct
52 Correct 3 ms 5076 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 5008 KB Output is correct
3 Correct 3 ms 5008 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 5004 KB Output is correct
7 Correct 3 ms 5004 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 5008 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 4 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 5004 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 5004 KB Output is correct
16 Correct 3 ms 5008 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 5008 KB Output is correct
20 Correct 3 ms 5008 KB Output is correct
21 Correct 3 ms 5008 KB Output is correct
22 Correct 3 ms 5004 KB Output is correct
23 Correct 3 ms 4948 KB Output is correct
24 Correct 3 ms 4948 KB Output is correct
25 Correct 4 ms 4948 KB Output is correct
26 Correct 3 ms 4948 KB Output is correct
27 Correct 3 ms 5008 KB Output is correct
28 Correct 3 ms 4948 KB Output is correct
29 Correct 3 ms 5008 KB Output is correct
30 Correct 3 ms 5008 KB Output is correct
31 Correct 3 ms 4948 KB Output is correct
32 Correct 3 ms 5008 KB Output is correct
33 Correct 3 ms 4948 KB Output is correct
34 Correct 3 ms 4960 KB Output is correct
35 Correct 3 ms 4948 KB Output is correct
36 Correct 3 ms 4948 KB Output is correct
37 Correct 3 ms 4948 KB Output is correct
38 Correct 3 ms 5008 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 4948 KB Output is correct
42 Correct 3 ms 5012 KB Output is correct
43 Correct 2 ms 4948 KB Output is correct
44 Correct 3 ms 4948 KB Output is correct
45 Correct 3 ms 4948 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 5004 KB Output is correct
52 Correct 3 ms 5012 KB Output is correct
53 Correct 3 ms 5008 KB Output is correct
54 Correct 6 ms 5588 KB Output is correct
55 Correct 6 ms 5656 KB Output is correct
56 Correct 36 ms 10852 KB Output is correct
57 Correct 36 ms 10692 KB Output is correct
58 Correct 36 ms 10608 KB Output is correct
59 Correct 42 ms 10636 KB Output is correct
60 Correct 35 ms 10716 KB Output is correct
61 Correct 35 ms 10628 KB Output is correct
62 Correct 33 ms 10688 KB Output is correct
63 Correct 34 ms 10712 KB Output is correct
64 Correct 33 ms 10652 KB Output is correct
65 Correct 37 ms 10740 KB Output is correct
66 Correct 33 ms 10688 KB Output is correct
67 Correct 33 ms 10720 KB Output is correct
68 Correct 34 ms 10656 KB Output is correct
69 Correct 3 ms 4948 KB Output is correct
70 Correct 3 ms 4948 KB Output is correct
71 Correct 34 ms 10664 KB Output is correct
72 Correct 34 ms 10636 KB Output is correct
73 Correct 37 ms 10708 KB Output is correct
74 Correct 3 ms 4948 KB Output is correct
75 Correct 2 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 72 ms 16340 KB Output is correct
79 Correct 48 ms 11372 KB Output is correct
80 Correct 60 ms 16104 KB Output is correct
81 Correct 36 ms 10836 KB Output is correct
82 Correct 74 ms 16120 KB Output is correct
83 Correct 57 ms 13064 KB Output is correct
84 Correct 3 ms 4948 KB Output is correct
85 Correct 3 ms 4948 KB Output is correct
86 Correct 4 ms 4948 KB Output is correct
87 Correct 3 ms 4948 KB Output is correct
88 Correct 3 ms 5016 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 5016 KB Output is correct
92 Correct 3 ms 5076 KB Output is correct
93 Correct 3 ms 5076 KB Output is correct
94 Correct 3 ms 5016 KB Output is correct
95 Correct 3 ms 5028 KB Output is correct
96 Correct 3 ms 5016 KB Output is correct
97 Correct 3 ms 4948 KB Output is correct
98 Correct 3 ms 5020 KB Output is correct
99 Correct 3 ms 5076 KB Output is correct
100 Correct 4 ms 5016 KB Output is correct
101 Correct 8 ms 6048 KB Output is correct
102 Correct 9 ms 5660 KB Output is correct
103 Correct 64 ms 15640 KB Output is correct
104 Correct 54 ms 15504 KB Output is correct
105 Correct 55 ms 12824 KB Output is correct
106 Correct 57 ms 15552 KB Output is correct
107 Correct 61 ms 10864 KB Output is correct
108 Correct 52 ms 11160 KB Output is correct
109 Correct 41 ms 10524 KB Output is correct
110 Correct 32 ms 9956 KB Output is correct
111 Correct 62 ms 14620 KB Output is correct
112 Correct 70 ms 13972 KB Output is correct
113 Correct 52 ms 10696 KB Output is correct
114 Correct 57 ms 15420 KB Output is correct
115 Correct 68 ms 15308 KB Output is correct