oj.uz

Submission #527602

# Submission time Handle Problem Language Result Execution time Memory
527602 2022-02-17T18:13:43 Z lcs147 Arranging Shoes (IOI19_shoes) C++17
100 / 100
 518 ms 148848 KB 
#include"shoes.h"
#include<bits/stdc++.h>
// #define int long long
using namespace std;

struct fenwick {
    vector<int> fenw;
    fenwick(int n){
        fenw.assign(n, 0); // default value
    }
    int add(int a, int b) {
        return a+b;
    }
    void update(int x, int v) {
	    for(; x < fenw.size(); x |= (x + 1)) {
            fenw[x] = add(fenw[x], v);
        }
    }
    int query(int x) {  
        int sum = 0;
        for(; x >= 0; x = (x & (x + 1)) - 1) sum = add(sum, fenw[x]);
        return sum;
    }
};

long long count_swaps(vector<int>a) {

    map<int, deque<int>>id;
    for(int i=0; i<a.size(); i++) {
        id[a[i]].push_back(i);
    }

    fenwick bit(a.size());
    for(int i=0; i<a.size(); i++) {
        bit.update(i, +1);
    }

    vector<int>add(a.size());
    
    long long res = 0;
    for(int i=0; i<a.size(); i++) {
        if(i>0 && bit.query(i)-bit.query(i-1)==0) continue;

        int j = id[-a[i]].front();
    
        int swaps = bit.query(j) - bit.query(i);
        if(a[i]<0) swaps--;
        res += swaps;

        id[a[i]].pop_front();
        id[-a[i]].pop_front();
        bit.update(j, -1);
    }

    return res;
}

Compilation message

shoes.cpp: In member function 'void fenwick::update(int, int)':
shoes.cpp:15:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |      for(; x < fenw.size(); x |= (x + 1)) {
      |            ~~^~~~~~~~~~~~~
shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:29:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |     for(int i=0; i<a.size(); i++) {
      |                  ~^~~~~~~~~
shoes.cpp:34:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |     for(int i=0; i<a.size(); i++) {
      |                  ~^~~~~~~~~
shoes.cpp:41:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |     for(int i=0; i<a.size(); i++) {
      |                  ~^~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 292 KB Output is correct
2 Correct 0 ms 204 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 292 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 1 ms 292 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 0 ms 288 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 292 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 0 ms 204 KB Output is correct
28 Correct 0 ms 288 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 0 ms 204 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 0 ms 204 KB Output is correct
33 Correct 0 ms 204 KB Output is correct
34 Correct 1 ms 288 KB Output is correct
35 Correct 1 ms 292 KB Output is correct
36 Correct 0 ms 204 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 292 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 292 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 292 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 1 ms 288 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 6 ms 712 KB Output is correct
21 Correct 4 ms 712 KB Output is correct
22 Correct 34 ms 5420 KB Output is correct
23 Correct 31 ms 5412 KB Output is correct
24 Correct 37 ms 5416 KB Output is correct
25 Correct 30 ms 5324 KB Output is correct
26 Correct 36 ms 5396 KB Output is correct
27 Correct 34 ms 5268 KB Output is correct
28 Correct 31 ms 5444 KB Output is correct
29 Correct 31 ms 5416 KB Output is correct
30 Correct 32 ms 5536 KB Output is correct
31 Correct 35 ms 5404 KB Output is correct
32 Correct 34 ms 5400 KB Output is correct
33 Correct 30 ms 5288 KB Output is correct
34 Correct 33 ms 5400 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 1 ms 204 KB Output is correct
37 Correct 30 ms 5416 KB Output is correct
38 Correct 31 ms 5412 KB Output is correct
39 Correct 31 ms 5396 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 450 ms 148696 KB Output is correct
6 Correct 123 ms 17252 KB Output is correct
7 Correct 458 ms 148848 KB Output is correct
8 Correct 33 ms 5532 KB Output is correct
9 Correct 473 ms 148788 KB Output is correct
10 Correct 296 ms 76708 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 292 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 1 ms 292 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 0 ms 288 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 292 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 0 ms 204 KB Output is correct
28 Correct 0 ms 288 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 0 ms 204 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 0 ms 204 KB Output is correct
33 Correct 0 ms 204 KB Output is correct
34 Correct 1 ms 288 KB Output is correct
35 Correct 1 ms 292 KB Output is correct
36 Correct 0 ms 204 KB Output is correct
37 Correct 1 ms 204 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 588 KB Output is correct
41 Correct 3 ms 1740 KB Output is correct
42 Correct 2 ms 1740 KB Output is correct
43 Correct 2 ms 1484 KB Output is correct
44 Correct 2 ms 1324 KB Output is correct
45 Correct 2 ms 1228 KB Output is correct
46 Correct 2 ms 1100 KB Output is correct
47 Correct 2 ms 972 KB Output is correct
48 Correct 2 ms 716 KB Output is correct
49 Correct 1 ms 544 KB Output is correct
50 Correct 1 ms 332 KB Output is correct
51 Correct 1 ms 332 KB Output is correct
52 Correct 3 ms 1740 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 292 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 1 ms 292 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 0 ms 288 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 292 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 0 ms 204 KB Output is correct
28 Correct 0 ms 288 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 0 ms 204 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 0 ms 204 KB Output is correct
33 Correct 0 ms 204 KB Output is correct
34 Correct 1 ms 288 KB Output is correct
35 Correct 1 ms 292 KB Output is correct
36 Correct 0 ms 204 KB Output is correct
37 Correct 1 ms 204 KB Output is correct
38 Correct 0 ms 204 KB Output is correct
39 Correct 0 ms 204 KB Output is correct
40 Correct 1 ms 292 KB Output is correct
41 Correct 1 ms 204 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Correct 0 ms 292 KB Output is correct
44 Correct 1 ms 204 KB Output is correct
45 Correct 0 ms 204 KB Output is correct
46 Correct 1 ms 288 KB Output is correct
47 Correct 0 ms 204 KB Output is correct
48 Correct 0 ms 204 KB Output is correct
49 Correct 1 ms 204 KB Output is correct
50 Correct 1 ms 204 KB Output is correct
51 Correct 1 ms 204 KB Output is correct
52 Correct 1 ms 332 KB Output is correct
53 Correct 1 ms 332 KB Output is correct
54 Correct 6 ms 712 KB Output is correct
55 Correct 4 ms 712 KB Output is correct
56 Correct 34 ms 5420 KB Output is correct
57 Correct 31 ms 5412 KB Output is correct
58 Correct 37 ms 5416 KB Output is correct
59 Correct 30 ms 5324 KB Output is correct
60 Correct 36 ms 5396 KB Output is correct
61 Correct 34 ms 5268 KB Output is correct
62 Correct 31 ms 5444 KB Output is correct
63 Correct 31 ms 5416 KB Output is correct
64 Correct 32 ms 5536 KB Output is correct
65 Correct 35 ms 5404 KB Output is correct
66 Correct 34 ms 5400 KB Output is correct
67 Correct 30 ms 5288 KB Output is correct
68 Correct 33 ms 5400 KB Output is correct
69 Correct 1 ms 204 KB Output is correct
70 Correct 1 ms 204 KB Output is correct
71 Correct 30 ms 5416 KB Output is correct
72 Correct 31 ms 5412 KB Output is correct
73 Correct 31 ms 5396 KB Output is correct
74 Correct 1 ms 204 KB Output is correct
75 Correct 1 ms 204 KB Output is correct
76 Correct 1 ms 204 KB Output is correct
77 Correct 1 ms 204 KB Output is correct
78 Correct 450 ms 148696 KB Output is correct
79 Correct 123 ms 17252 KB Output is correct
80 Correct 458 ms 148848 KB Output is correct
81 Correct 33 ms 5532 KB Output is correct
82 Correct 473 ms 148788 KB Output is correct
83 Correct 296 ms 76708 KB Output is correct
84 Correct 1 ms 204 KB Output is correct
85 Correct 1 ms 332 KB Output is correct
86 Correct 1 ms 332 KB Output is correct
87 Correct 1 ms 588 KB Output is correct
88 Correct 3 ms 1740 KB Output is correct
89 Correct 2 ms 1740 KB Output is correct
90 Correct 2 ms 1484 KB Output is correct
91 Correct 2 ms 1324 KB Output is correct
92 Correct 2 ms 1228 KB Output is correct
93 Correct 2 ms 1100 KB Output is correct
94 Correct 2 ms 972 KB Output is correct
95 Correct 2 ms 716 KB Output is correct
96 Correct 1 ms 544 KB Output is correct
97 Correct 1 ms 332 KB Output is correct
98 Correct 1 ms 332 KB Output is correct
99 Correct 3 ms 1740 KB Output is correct
100 Correct 2 ms 1740 KB Output is correct
101 Correct 25 ms 13564 KB Output is correct
102 Correct 11 ms 3532 KB Output is correct
103 Correct 518 ms 148692 KB Output is correct
104 Correct 462 ms 148676 KB Output is correct
105 Correct 382 ms 86468 KB Output is correct
106 Correct 442 ms 148676 KB Output is correct
107 Correct 163 ms 20792 KB Output is correct
108 Correct 214 ms 36672 KB Output is correct
109 Correct 35 ms 5412 KB Output is correct
110 Correct 31 ms 5508 KB Output is correct
111 Correct 426 ms 132888 KB Output is correct
112 Correct 429 ms 116692 KB Output is correct
113 Correct 176 ms 22548 KB Output is correct
114 Correct 443 ms 148632 KB Output is correct
115 Correct 468 ms 148828 KB Output is correct