oj.uz

Submission #533023

# Submission time Handle Problem Language Result Execution time Memory
533023 2022-03-04T12:53:29 Z kebine Arranging Shoes (IOI19_shoes) C++17
100 / 100
 87 ms 21436 KB 
#include <bits/stdc++.h>
using namespace std;
 
template <typename T>
struct Fenwick {
    vector<T> t;
    T n;
    Fenwick(T n) : n(n) {
        t.resize(n);
    }
    T g(T r){
        T ret = 0;
        for (; r >= 0; r = (r & (r + 1)) - 1)
            ret += t[r];
        return ret;
    }
    T sum(T l, T r){
        return g(r) - g(l - 1);
    }
    void add(T i, T v){
        for(;i < n; i = i | (i + 1))
            t[i] += v;
    }
};
 
 
long long count_swaps(vector<int> s){
  long long n = s.size(), ans = 0;
  const int N = 1e5 + 1;
  vector<int> L[n + 1], R[n + 1];
  for(int i=0;i<n;i++)
  {
    if(s[i] < 0) L[-s[i]].push_back(i);
    else R[s[i]].push_back(i);
  }
  Fenwick<long long> fw(n + 1);
  vector<pair<int,int>> v;
  for(int i=1;i<=n;i++)
  {
    for(int j=0;j<L[i].size();j++)
    {
      if(L[i][j] > R[i][j])
      {
        ans++;
        swap(L[i][j], R[i][j]);
      }
      v.push_back({L[i][j], R[i][j]});
    }
  }
  sort(v.begin(), v.end());
  for(auto i : v)
  {
    // cout << i.first << " " << i.second << " " << '\n';
    ans += (i.second - i.first - 1) - fw.sum(i.first + 1, i.second - 1);
    fw.add(i.second, 1);
    fw.add(i.first, 1);
  }
  return ans;
}
 
 
// signed main(){
//   int n;
//   cin >> n;
//   vector<int> t(2*n);
//   for(int i=0;i<2*n;i++) cin >> t[i];
//   cout << count_swaps(t) << '\n';
// }

Compilation message

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:40:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |     for(int j=0;j<L[i].size();j++)
      |                 ~^~~~~~~~~~~~
shoes.cpp:29:13: warning: unused variable 'N' [-Wunused-variable]
   29 |   const int N = 1e5 + 1;
      |             ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 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 204 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 292 KB Output is correct
5 Correct 1 ms 292 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 288 KB Output is correct
9 Correct 0 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 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 324 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 292 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 0 ms 292 KB Output is correct
21 Correct 0 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 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 1 ms 204 KB Output is correct
28 Correct 0 ms 204 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 0 ms 288 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 0 ms 288 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 1 ms 204 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 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 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 1 ms 296 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 292 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 292 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 424 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 4 ms 1868 KB Output is correct
21 Correct 4 ms 1868 KB Output is correct
22 Correct 37 ms 15940 KB Output is correct
23 Correct 37 ms 16024 KB Output is correct
24 Correct 39 ms 16036 KB Output is correct
25 Correct 37 ms 15784 KB Output is correct
26 Correct 37 ms 15964 KB Output is correct
27 Correct 36 ms 15768 KB Output is correct
28 Correct 38 ms 16032 KB Output is correct
29 Correct 41 ms 16032 KB Output is correct
30 Correct 38 ms 16032 KB Output is correct
31 Correct 34 ms 15920 KB Output is correct
32 Correct 39 ms 15976 KB Output is correct
33 Correct 37 ms 15764 KB Output is correct
34 Correct 43 ms 16016 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 1 ms 204 KB Output is correct
37 Correct 37 ms 16040 KB Output is correct
38 Correct 36 ms 15932 KB Output is correct
39 Correct 38 ms 15932 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 292 KB Output is correct
5 Correct 70 ms 21436 KB Output is correct
6 Correct 50 ms 16572 KB Output is correct
7 Correct 65 ms 21308 KB Output is correct
8 Correct 40 ms 16004 KB Output is correct
9 Correct 87 ms 21180 KB Output is correct
10 Correct 68 ms 18076 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 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 292 KB Output is correct
5 Correct 1 ms 292 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 288 KB Output is correct
9 Correct 0 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 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 324 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 292 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 0 ms 292 KB Output is correct
21 Correct 0 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 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 1 ms 204 KB Output is correct
28 Correct 0 ms 204 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 0 ms 288 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 0 ms 288 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 1 ms 204 KB Output is correct
37 Correct 1 ms 292 KB Output is correct
38 Correct 0 ms 288 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 1 ms 288 KB Output is correct
41 Correct 1 ms 460 KB Output is correct
42 Correct 1 ms 460 KB Output is correct
43 Correct 1 ms 424 KB Output is correct
44 Correct 1 ms 460 KB Output is correct
45 Correct 1 ms 568 KB Output is correct
46 Correct 1 ms 428 KB Output is correct
47 Correct 1 ms 428 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 1 ms 332 KB Output is correct
50 Correct 1 ms 332 KB Output is correct
51 Correct 1 ms 332 KB Output is correct
52 Correct 1 ms 460 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 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 292 KB Output is correct
5 Correct 1 ms 292 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 288 KB Output is correct
9 Correct 0 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 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 324 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 292 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 0 ms 292 KB Output is correct
21 Correct 0 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 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 1 ms 204 KB Output is correct
28 Correct 0 ms 204 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 0 ms 288 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 1 ms 204 KB Output is correct
33 Correct 0 ms 288 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 1 ms 204 KB Output is correct
37 Correct 1 ms 204 KB Output is correct
38 Correct 1 ms 204 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 1 ms 204 KB Output is correct
41 Correct 0 ms 204 KB Output is correct
42 Correct 1 ms 296 KB Output is correct
43 Correct 1 ms 204 KB Output is correct
44 Correct 1 ms 204 KB Output is correct
45 Correct 1 ms 292 KB Output is correct
46 Correct 1 ms 204 KB Output is correct
47 Correct 1 ms 204 KB Output is correct
48 Correct 1 ms 204 KB Output is correct
49 Correct 1 ms 292 KB Output is correct
50 Correct 1 ms 204 KB Output is correct
51 Correct 1 ms 332 KB Output is correct
52 Correct 1 ms 424 KB Output is correct
53 Correct 1 ms 332 KB Output is correct
54 Correct 4 ms 1868 KB Output is correct
55 Correct 4 ms 1868 KB Output is correct
56 Correct 37 ms 15940 KB Output is correct
57 Correct 37 ms 16024 KB Output is correct
58 Correct 39 ms 16036 KB Output is correct
59 Correct 37 ms 15784 KB Output is correct
60 Correct 37 ms 15964 KB Output is correct
61 Correct 36 ms 15768 KB Output is correct
62 Correct 38 ms 16032 KB Output is correct
63 Correct 41 ms 16032 KB Output is correct
64 Correct 38 ms 16032 KB Output is correct
65 Correct 34 ms 15920 KB Output is correct
66 Correct 39 ms 15976 KB Output is correct
67 Correct 37 ms 15764 KB Output is correct
68 Correct 43 ms 16016 KB Output is correct
69 Correct 1 ms 204 KB Output is correct
70 Correct 1 ms 204 KB Output is correct
71 Correct 37 ms 16040 KB Output is correct
72 Correct 36 ms 15932 KB Output is correct
73 Correct 38 ms 15932 KB Output is correct
74 Correct 0 ms 204 KB Output is correct
75 Correct 0 ms 204 KB Output is correct
76 Correct 1 ms 204 KB Output is correct
77 Correct 1 ms 292 KB Output is correct
78 Correct 70 ms 21436 KB Output is correct
79 Correct 50 ms 16572 KB Output is correct
80 Correct 65 ms 21308 KB Output is correct
81 Correct 40 ms 16004 KB Output is correct
82 Correct 87 ms 21180 KB Output is correct
83 Correct 68 ms 18076 KB Output is correct
84 Correct 1 ms 292 KB Output is correct
85 Correct 0 ms 288 KB Output is correct
86 Correct 1 ms 204 KB Output is correct
87 Correct 1 ms 288 KB Output is correct
88 Correct 1 ms 460 KB Output is correct
89 Correct 1 ms 460 KB Output is correct
90 Correct 1 ms 424 KB Output is correct
91 Correct 1 ms 460 KB Output is correct
92 Correct 1 ms 568 KB Output is correct
93 Correct 1 ms 428 KB Output is correct
94 Correct 1 ms 428 KB Output is correct
95 Correct 1 ms 332 KB Output is correct
96 Correct 1 ms 332 KB Output is correct
97 Correct 1 ms 332 KB Output is correct
98 Correct 1 ms 332 KB Output is correct
99 Correct 1 ms 460 KB Output is correct
100 Correct 1 ms 460 KB Output is correct
101 Correct 6 ms 2348 KB Output is correct
102 Correct 6 ms 1996 KB Output is correct
103 Correct 75 ms 21272 KB Output is correct
104 Correct 63 ms 21292 KB Output is correct
105 Correct 78 ms 18740 KB Output is correct
106 Correct 76 ms 21284 KB Output is correct
107 Correct 54 ms 16408 KB Output is correct
108 Correct 58 ms 16812 KB Output is correct
109 Correct 44 ms 16060 KB Output is correct
110 Correct 40 ms 15276 KB Output is correct
111 Correct 69 ms 20156 KB Output is correct
112 Correct 82 ms 19348 KB Output is correct
113 Correct 70 ms 16048 KB Output is correct
114 Correct 82 ms 20648 KB Output is correct
115 Correct 63 ms 20644 KB Output is correct