oj.uz

Submission #364550

# Submission time Handle Problem Language Result Execution time Memory
364550 2021-02-09T13:06:53 Z tiberiu Arranging Shoes (IOI19_shoes) C++14
100 / 100
 363 ms 26732 KB 
#include "shoes.h"
#include <map>
#include <vector>

using namespace std;

const int MAX_N = 200001;
int aib[MAX_N];

void update(int pos, int val) {
    pos++;
    while (pos < MAX_N) {
        aib[pos] += val;
        pos += (pos & -pos);
    }
}

int query(int pos) {
    pos++;
    int ans = 0;
    while (pos) {
        ans += aib[pos];
        pos &= pos - 1;
    }
    return ans;
}

long long count_swaps(std::vector<int> s) {
    map<int, vector<int>> f;

    for (int i = 0; i < s.size(); i++) {
        f[s[i]].push_back(i);
    }

    long long ans = 0;

    vector<int> twin(s.size());
    for (auto x : f) {
        if (x.first < 0)
            continue;

        for (int i = 0; i < f[x.first].size(); i++) {
            twin[f[x.first][i]] = f[-x.first][i];
            twin[f[-x.first][i]] = f[x.first][i];
            if (f[-x.first][i] > f[x.first][i])
                ans++;
        }
    }

    for (int i = 0; i < s.size(); i++) {
        if (twin[i] < i) {
            ans += query(i) - query(twin[i]);
            update(i, 1);
            update(twin[i], 1);
        }
    }

    return ans;
}

Compilation message

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:31:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |     for (int i = 0; i < s.size(); i++) {
      |                     ~~^~~~~~~~~~
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 i = 0; i < f[x.first].size(); i++) {
      |                         ~~^~~~~~~~~~~~~~~~~~~
shoes.cpp:50:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |     for (int i = 0; i < s.size(); i++) {
      |                     ~~^~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 0 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 512 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 508 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 0 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 0 ms 364 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 1 ms 364 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 1 ms 376 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 0 ms 364 KB Output is correct
13 Correct 1 ms 492 KB Output is correct
14 Correct 0 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 4 ms 876 KB Output is correct
21 Correct 5 ms 876 KB Output is correct
22 Correct 42 ms 6020 KB Output is correct
23 Correct 39 ms 5848 KB Output is correct
24 Correct 41 ms 5848 KB Output is correct
25 Correct 37 ms 5724 KB Output is correct
26 Correct 42 ms 5848 KB Output is correct
27 Correct 43 ms 5848 KB Output is correct
28 Correct 38 ms 5852 KB Output is correct
29 Correct 38 ms 5852 KB Output is correct
30 Correct 39 ms 5852 KB Output is correct
31 Correct 42 ms 5864 KB Output is correct
32 Correct 38 ms 5864 KB Output is correct
33 Correct 36 ms 5724 KB Output is correct
34 Correct 38 ms 5852 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 1 ms 364 KB Output is correct
37 Correct 48 ms 5852 KB Output is correct
38 Correct 38 ms 5852 KB Output is correct
39 Correct 38 ms 5852 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 313 ms 26604 KB Output is correct
6 Correct 106 ms 7676 KB Output is correct
7 Correct 308 ms 26604 KB Output is correct
8 Correct 41 ms 5772 KB Output is correct
9 Correct 306 ms 26604 KB Output is correct
10 Correct 220 ms 15724 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 0 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 512 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 508 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 0 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 0 ms 364 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 1 ms 364 KB Output is correct
37 Correct 1 ms 364 KB Output is correct
38 Correct 1 ms 364 KB Output is correct
39 Correct 1 ms 364 KB Output is correct
40 Correct 1 ms 364 KB Output is correct
41 Correct 2 ms 748 KB Output is correct
42 Correct 2 ms 620 KB Output is correct
43 Correct 2 ms 620 KB Output is correct
44 Correct 3 ms 492 KB Output is correct
45 Correct 2 ms 492 KB Output is correct
46 Correct 2 ms 492 KB Output is correct
47 Correct 2 ms 492 KB Output is correct
48 Correct 1 ms 492 KB Output is correct
49 Correct 1 ms 364 KB Output is correct
50 Correct 1 ms 364 KB Output is correct
51 Correct 1 ms 364 KB Output is correct
52 Correct 3 ms 620 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 0 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 512 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 508 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 0 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 0 ms 364 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 1 ms 364 KB Output is correct
37 Correct 1 ms 364 KB Output is correct
38 Correct 0 ms 364 KB Output is correct
39 Correct 1 ms 376 KB Output is correct
40 Correct 1 ms 364 KB Output is correct
41 Correct 1 ms 364 KB Output is correct
42 Correct 1 ms 364 KB Output is correct
43 Correct 1 ms 364 KB Output is correct
44 Correct 1 ms 364 KB Output is correct
45 Correct 1 ms 364 KB Output is correct
46 Correct 0 ms 364 KB Output is correct
47 Correct 1 ms 492 KB Output is correct
48 Correct 0 ms 364 KB Output is correct
49 Correct 1 ms 364 KB Output is correct
50 Correct 1 ms 364 KB Output is correct
51 Correct 1 ms 364 KB Output is correct
52 Correct 1 ms 364 KB Output is correct
53 Correct 1 ms 364 KB Output is correct
54 Correct 4 ms 876 KB Output is correct
55 Correct 5 ms 876 KB Output is correct
56 Correct 42 ms 6020 KB Output is correct
57 Correct 39 ms 5848 KB Output is correct
58 Correct 41 ms 5848 KB Output is correct
59 Correct 37 ms 5724 KB Output is correct
60 Correct 42 ms 5848 KB Output is correct
61 Correct 43 ms 5848 KB Output is correct
62 Correct 38 ms 5852 KB Output is correct
63 Correct 38 ms 5852 KB Output is correct
64 Correct 39 ms 5852 KB Output is correct
65 Correct 42 ms 5864 KB Output is correct
66 Correct 38 ms 5864 KB Output is correct
67 Correct 36 ms 5724 KB Output is correct
68 Correct 38 ms 5852 KB Output is correct
69 Correct 1 ms 364 KB Output is correct
70 Correct 1 ms 364 KB Output is correct
71 Correct 48 ms 5852 KB Output is correct
72 Correct 38 ms 5852 KB Output is correct
73 Correct 38 ms 5852 KB Output is correct
74 Correct 1 ms 364 KB Output is correct
75 Correct 1 ms 364 KB Output is correct
76 Correct 1 ms 364 KB Output is correct
77 Correct 0 ms 364 KB Output is correct
78 Correct 313 ms 26604 KB Output is correct
79 Correct 106 ms 7676 KB Output is correct
80 Correct 308 ms 26604 KB Output is correct
81 Correct 41 ms 5772 KB Output is correct
82 Correct 306 ms 26604 KB Output is correct
83 Correct 220 ms 15724 KB Output is correct
84 Correct 1 ms 364 KB Output is correct
85 Correct 1 ms 364 KB Output is correct
86 Correct 1 ms 364 KB Output is correct
87 Correct 1 ms 364 KB Output is correct
88 Correct 2 ms 748 KB Output is correct
89 Correct 2 ms 620 KB Output is correct
90 Correct 2 ms 620 KB Output is correct
91 Correct 3 ms 492 KB Output is correct
92 Correct 2 ms 492 KB Output is correct
93 Correct 2 ms 492 KB Output is correct
94 Correct 2 ms 492 KB Output is correct
95 Correct 1 ms 492 KB Output is correct
96 Correct 1 ms 364 KB Output is correct
97 Correct 1 ms 364 KB Output is correct
98 Correct 1 ms 364 KB Output is correct
99 Correct 3 ms 620 KB Output is correct
100 Correct 2 ms 620 KB Output is correct
101 Correct 20 ms 2668 KB Output is correct
102 Correct 11 ms 1260 KB Output is correct
103 Correct 363 ms 26604 KB Output is correct
104 Correct 306 ms 26732 KB Output is correct
105 Correct 299 ms 17152 KB Output is correct
106 Correct 296 ms 26604 KB Output is correct
107 Correct 113 ms 8044 KB Output is correct
108 Correct 141 ms 10220 KB Output is correct
109 Correct 39 ms 5988 KB Output is correct
110 Correct 37 ms 5924 KB Output is correct
111 Correct 295 ms 24172 KB Output is correct
112 Correct 331 ms 21740 KB Output is correct
113 Correct 107 ms 8172 KB Output is correct
114 Correct 307 ms 26604 KB Output is correct
115 Correct 306 ms 26572 KB Output is correct