oj.uz

Submission #171727

# Submission time Handle Problem Language Result Execution time Memory
171727 2019-12-30T08:18:13 Z AlexLuchianov Arranging Shoes (IOI19_shoes) C++14
100 / 100
 130 ms 22008 KB 
#include "shoes.h"
#include <cassert>
#include <iostream>

int const nmax = 200000;
using ll = long long;
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#define MAX(a, b) (((a) < (b)) ? (b) : (a))

std::vector<int> left[1 + nmax];
std::vector<int> right[1 + nmax];
int v[1 + nmax], per[2][1 + nmax];

class FenwickTree{
private:
  int n;
  std::vector<int> aib;
public:
  FenwickTree(int n){
    aib.resize(1 + n);
    this->n = n;
  }
  void update(int x, int val){
    while(x <= n){
      aib[x] += val;
      x += (x ^ (x & (x - 1)));
    }
  }
  int query(int x){
    int result = 0;
    while(0 < x){
      result += aib[x];
      x = (x & (x - 1));
    }
    return result;
  }
};

long long count_swaps(std::vector<int> s) {

	int n = s.size();
	for(int i = 1;i <= n; i++)
    v[i] = s[i - 1];
  for(int i = 1;i <= n; i++){
    if(v[i] < 0)
      left[-v[i]].push_back(i);
    else
      right[v[i]].push_back(i);
  }


  for(int i = 1;i <= n; i++){
    assert(left[i].size() == right[i].size());
    for(int h = 0;h < left[i].size(); h++){
      int x = left[i][h], y = right[i][h];
      per[0][x] = y;
      per[1][y] = x;
    }
  }
  FenwickTree aib(n);
  for(int i = 1;i <= n; i++)
    aib.update(i, 1);
  ll result = 0;
  for(int i = 1;i <= n; i++){
    if(v[i] < 0){
      if(i < per[0][i]){
        result += aib.query(per[0][i] - 1) - aib.query(i);
        aib.update(per[0][i], -1);
      }
    } else {
      if(i < per[1][i]){
        result += aib.query(per[1][i] - 1) - aib.query(i - 1);
        aib.update(per[1][i], -1);
      }
    }
  }
  return result;
}

Compilation message

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:54:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int h = 0;h < left[i].size(); h++){
                   ~~^~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 9720 KB Output is correct
2 Correct 10 ms 9720 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 9720 KB Output is correct
2 Correct 10 ms 9720 KB Output is correct
3 Correct 11 ms 9720 KB Output is correct
4 Correct 12 ms 9720 KB Output is correct
5 Correct 11 ms 9720 KB Output is correct
6 Correct 12 ms 9720 KB Output is correct
7 Correct 12 ms 9848 KB Output is correct
8 Correct 10 ms 9720 KB Output is correct
9 Correct 11 ms 9848 KB Output is correct
10 Correct 10 ms 9716 KB Output is correct
11 Correct 10 ms 9720 KB Output is correct
12 Correct 10 ms 9720 KB Output is correct
13 Correct 10 ms 9720 KB Output is correct
14 Correct 10 ms 9724 KB Output is correct
15 Correct 11 ms 9720 KB Output is correct
16 Correct 10 ms 9720 KB Output is correct
17 Correct 10 ms 9720 KB Output is correct
18 Correct 10 ms 9720 KB Output is correct
19 Correct 10 ms 9720 KB Output is correct
20 Correct 10 ms 9720 KB Output is correct
21 Correct 11 ms 9720 KB Output is correct
22 Correct 10 ms 9720 KB Output is correct
23 Correct 11 ms 9720 KB Output is correct
24 Correct 11 ms 9720 KB Output is correct
25 Correct 13 ms 9720 KB Output is correct
26 Correct 10 ms 9720 KB Output is correct
27 Correct 11 ms 9852 KB Output is correct
28 Correct 11 ms 9720 KB Output is correct
29 Correct 11 ms 9724 KB Output is correct
30 Correct 10 ms 9720 KB Output is correct
31 Correct 10 ms 9724 KB Output is correct
32 Correct 11 ms 9768 KB Output is correct
33 Correct 11 ms 9724 KB Output is correct
34 Correct 11 ms 9720 KB Output is correct
35 Correct 10 ms 9720 KB Output is correct
36 Correct 11 ms 9720 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 9720 KB Output is correct
2 Correct 10 ms 9720 KB Output is correct
3 Correct 11 ms 9720 KB Output is correct
4 Correct 10 ms 9720 KB Output is correct
5 Correct 12 ms 9848 KB Output is correct
6 Correct 10 ms 9720 KB Output is correct
7 Correct 11 ms 9720 KB Output is correct
8 Correct 10 ms 9720 KB Output is correct
9 Correct 1 ms 9720 KB Output is correct
10 Correct 10 ms 9720 KB Output is correct
11 Correct 10 ms 9720 KB Output is correct
12 Correct 11 ms 9720 KB Output is correct
13 Correct 12 ms 9848 KB Output is correct
14 Correct 11 ms 9720 KB Output is correct
15 Correct 10 ms 9720 KB Output is correct
16 Correct 11 ms 9720 KB Output is correct
17 Correct 12 ms 9720 KB Output is correct
18 Correct 38 ms 9720 KB Output is correct
19 Correct 11 ms 9740 KB Output is correct
20 Correct 15 ms 10488 KB Output is correct
21 Correct 17 ms 10360 KB Output is correct
22 Correct 57 ms 16592 KB Output is correct
23 Correct 50 ms 16620 KB Output is correct
24 Correct 54 ms 16748 KB Output is correct
25 Correct 52 ms 15600 KB Output is correct
26 Correct 57 ms 16620 KB Output is correct
27 Correct 48 ms 16492 KB Output is correct
28 Correct 49 ms 15904 KB Output is correct
29 Correct 50 ms 15852 KB Output is correct
30 Correct 49 ms 15856 KB Output is correct
31 Correct 53 ms 16516 KB Output is correct
32 Correct 49 ms 15784 KB Output is correct
33 Correct 48 ms 15600 KB Output is correct
34 Correct 48 ms 15856 KB Output is correct
35 Correct 14 ms 9724 KB Output is correct
36 Correct 10 ms 9848 KB Output is correct
37 Correct 49 ms 15856 KB Output is correct
38 Correct 50 ms 15828 KB Output is correct
39 Correct 50 ms 15884 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 9720 KB Output is correct
2 Correct 11 ms 9692 KB Output is correct
3 Correct 10 ms 9720 KB Output is correct
4 Correct 11 ms 9720 KB Output is correct
5 Correct 90 ms 21084 KB Output is correct
6 Correct 67 ms 16376 KB Output is correct
7 Correct 93 ms 21112 KB Output is correct
8 Correct 53 ms 16004 KB Output is correct
9 Correct 90 ms 21112 KB Output is correct
10 Correct 82 ms 18096 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 9720 KB Output is correct
2 Correct 10 ms 9720 KB Output is correct
3 Correct 11 ms 9720 KB Output is correct
4 Correct 12 ms 9720 KB Output is correct
5 Correct 11 ms 9720 KB Output is correct
6 Correct 12 ms 9720 KB Output is correct
7 Correct 12 ms 9848 KB Output is correct
8 Correct 10 ms 9720 KB Output is correct
9 Correct 11 ms 9848 KB Output is correct
10 Correct 10 ms 9716 KB Output is correct
11 Correct 10 ms 9720 KB Output is correct
12 Correct 10 ms 9720 KB Output is correct
13 Correct 10 ms 9720 KB Output is correct
14 Correct 10 ms 9724 KB Output is correct
15 Correct 11 ms 9720 KB Output is correct
16 Correct 10 ms 9720 KB Output is correct
17 Correct 10 ms 9720 KB Output is correct
18 Correct 10 ms 9720 KB Output is correct
19 Correct 10 ms 9720 KB Output is correct
20 Correct 10 ms 9720 KB Output is correct
21 Correct 11 ms 9720 KB Output is correct
22 Correct 10 ms 9720 KB Output is correct
23 Correct 11 ms 9720 KB Output is correct
24 Correct 11 ms 9720 KB Output is correct
25 Correct 13 ms 9720 KB Output is correct
26 Correct 10 ms 9720 KB Output is correct
27 Correct 11 ms 9852 KB Output is correct
28 Correct 11 ms 9720 KB Output is correct
29 Correct 11 ms 9724 KB Output is correct
30 Correct 10 ms 9720 KB Output is correct
31 Correct 10 ms 9724 KB Output is correct
32 Correct 11 ms 9768 KB Output is correct
33 Correct 11 ms 9724 KB Output is correct
34 Correct 11 ms 9720 KB Output is correct
35 Correct 10 ms 9720 KB Output is correct
36 Correct 11 ms 9720 KB Output is correct
37 Correct 10 ms 9720 KB Output is correct
38 Correct 11 ms 9720 KB Output is correct
39 Correct 11 ms 9760 KB Output is correct
40 Correct 10 ms 9720 KB Output is correct
41 Correct 11 ms 9852 KB Output is correct
42 Correct 11 ms 9848 KB Output is correct
43 Correct 11 ms 9848 KB Output is correct
44 Correct 11 ms 9848 KB Output is correct
45 Correct 11 ms 9848 KB Output is correct
46 Correct 10 ms 9848 KB Output is correct
47 Correct 11 ms 9720 KB Output is correct
48 Correct 10 ms 9848 KB Output is correct
49 Correct 11 ms 9848 KB Output is correct
50 Correct 11 ms 9720 KB Output is correct
51 Correct 10 ms 9720 KB Output is correct
52 Correct 11 ms 9848 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 9720 KB Output is correct
2 Correct 10 ms 9720 KB Output is correct
3 Correct 11 ms 9720 KB Output is correct
4 Correct 12 ms 9720 KB Output is correct
5 Correct 11 ms 9720 KB Output is correct
6 Correct 12 ms 9720 KB Output is correct
7 Correct 12 ms 9848 KB Output is correct
8 Correct 10 ms 9720 KB Output is correct
9 Correct 11 ms 9848 KB Output is correct
10 Correct 10 ms 9716 KB Output is correct
11 Correct 10 ms 9720 KB Output is correct
12 Correct 10 ms 9720 KB Output is correct
13 Correct 10 ms 9720 KB Output is correct
14 Correct 10 ms 9724 KB Output is correct
15 Correct 11 ms 9720 KB Output is correct
16 Correct 10 ms 9720 KB Output is correct
17 Correct 10 ms 9720 KB Output is correct
18 Correct 10 ms 9720 KB Output is correct
19 Correct 10 ms 9720 KB Output is correct
20 Correct 10 ms 9720 KB Output is correct
21 Correct 11 ms 9720 KB Output is correct
22 Correct 10 ms 9720 KB Output is correct
23 Correct 11 ms 9720 KB Output is correct
24 Correct 11 ms 9720 KB Output is correct
25 Correct 13 ms 9720 KB Output is correct
26 Correct 10 ms 9720 KB Output is correct
27 Correct 11 ms 9852 KB Output is correct
28 Correct 11 ms 9720 KB Output is correct
29 Correct 11 ms 9724 KB Output is correct
30 Correct 10 ms 9720 KB Output is correct
31 Correct 10 ms 9724 KB Output is correct
32 Correct 11 ms 9768 KB Output is correct
33 Correct 11 ms 9724 KB Output is correct
34 Correct 11 ms 9720 KB Output is correct
35 Correct 10 ms 9720 KB Output is correct
36 Correct 11 ms 9720 KB Output is correct
37 Correct 11 ms 9720 KB Output is correct
38 Correct 10 ms 9720 KB Output is correct
39 Correct 12 ms 9848 KB Output is correct
40 Correct 10 ms 9720 KB Output is correct
41 Correct 11 ms 9720 KB Output is correct
42 Correct 10 ms 9720 KB Output is correct
43 Correct 1 ms 9720 KB Output is correct
44 Correct 10 ms 9720 KB Output is correct
45 Correct 10 ms 9720 KB Output is correct
46 Correct 11 ms 9720 KB Output is correct
47 Correct 12 ms 9848 KB Output is correct
48 Correct 11 ms 9720 KB Output is correct
49 Correct 10 ms 9720 KB Output is correct
50 Correct 11 ms 9720 KB Output is correct
51 Correct 12 ms 9720 KB Output is correct
52 Correct 38 ms 9720 KB Output is correct
53 Correct 11 ms 9740 KB Output is correct
54 Correct 15 ms 10488 KB Output is correct
55 Correct 17 ms 10360 KB Output is correct
56 Correct 57 ms 16592 KB Output is correct
57 Correct 50 ms 16620 KB Output is correct
58 Correct 54 ms 16748 KB Output is correct
59 Correct 52 ms 15600 KB Output is correct
60 Correct 57 ms 16620 KB Output is correct
61 Correct 48 ms 16492 KB Output is correct
62 Correct 49 ms 15904 KB Output is correct
63 Correct 50 ms 15852 KB Output is correct
64 Correct 49 ms 15856 KB Output is correct
65 Correct 53 ms 16516 KB Output is correct
66 Correct 49 ms 15784 KB Output is correct
67 Correct 48 ms 15600 KB Output is correct
68 Correct 48 ms 15856 KB Output is correct
69 Correct 14 ms 9724 KB Output is correct
70 Correct 10 ms 9848 KB Output is correct
71 Correct 49 ms 15856 KB Output is correct
72 Correct 50 ms 15828 KB Output is correct
73 Correct 50 ms 15884 KB Output is correct
74 Correct 11 ms 9720 KB Output is correct
75 Correct 11 ms 9692 KB Output is correct
76 Correct 10 ms 9720 KB Output is correct
77 Correct 11 ms 9720 KB Output is correct
78 Correct 90 ms 21084 KB Output is correct
79 Correct 67 ms 16376 KB Output is correct
80 Correct 93 ms 21112 KB Output is correct
81 Correct 53 ms 16004 KB Output is correct
82 Correct 90 ms 21112 KB Output is correct
83 Correct 82 ms 18096 KB Output is correct
84 Correct 10 ms 9720 KB Output is correct
85 Correct 11 ms 9720 KB Output is correct
86 Correct 11 ms 9760 KB Output is correct
87 Correct 10 ms 9720 KB Output is correct
88 Correct 11 ms 9852 KB Output is correct
89 Correct 11 ms 9848 KB Output is correct
90 Correct 11 ms 9848 KB Output is correct
91 Correct 11 ms 9848 KB Output is correct
92 Correct 11 ms 9848 KB Output is correct
93 Correct 10 ms 9848 KB Output is correct
94 Correct 11 ms 9720 KB Output is correct
95 Correct 10 ms 9848 KB Output is correct
96 Correct 11 ms 9848 KB Output is correct
97 Correct 11 ms 9720 KB Output is correct
98 Correct 10 ms 9720 KB Output is correct
99 Correct 11 ms 9848 KB Output is correct
100 Correct 11 ms 9848 KB Output is correct
101 Correct 17 ms 10872 KB Output is correct
102 Correct 16 ms 10488 KB Output is correct
103 Correct 106 ms 21956 KB Output is correct
104 Correct 130 ms 22008 KB Output is correct
105 Correct 102 ms 19164 KB Output is correct
106 Correct 92 ms 21128 KB Output is correct
107 Correct 75 ms 17404 KB Output is correct
108 Correct 76 ms 17628 KB Output is correct
109 Correct 50 ms 16112 KB Output is correct
110 Correct 49 ms 15864 KB Output is correct
111 Correct 91 ms 20444 KB Output is correct
112 Correct 102 ms 20472 KB Output is correct
113 Correct 70 ms 16504 KB Output is correct
114 Correct 117 ms 21240 KB Output is correct
115 Correct 113 ms 21112 KB Output is correct