oj.uz

Submission #143080

# Submission time Handle Problem Language Result Execution time Memory
143080 2019-08-13T00:36:25 Z model_code Arranging Shoes (IOI19_shoes) C++17
100 / 100
 49 ms 3960 KB 
// model solution

#include "shoes.h"

using namespace std;

class Fenwick
{
    vector<int> a;

    int count(int right)
    {
        int cnt = 0;
        for (; right >= 0; right = (right & (right + 1)) - 1)
        {
            cnt += a[right];
        }
        return cnt;
    }

public:
    explicit Fenwick(int n)
    {
        a.assign(n, 0);
    }

    int count(int left, int right)
    {
        return count(right) - count(left - 1);
    }

    void put(int index)
    {
        for (; index < int(a.size()); index = index | (index + 1))
        {
            a[index]++;
        }
    }
};

vector<int> create_index(int n, vector<int> &S)
{
    vector<int> index(2 * n + 1);
    for (int i = 0; i < 2 * n; i++)
    {
        index[S[i] + n] = i;
    }
    return index;
}

long long count_adjacent(int n, vector<int> &S)
{
    vector<int> index = create_index(n, S);
    Fenwick f = Fenwick(2 * n);
    long long ans = 0;
    for (int i = 0; i < 2 * n; i++)
    {
        if (S[i] != 0)
        {
            int pos = index[-S[i] + n];
            ans += pos - i - f.count(i, pos) - (S[i] < 0 ? 1 : 0);
            S[pos] = 0;
            f.put(pos);
        }
    }
    return ans;
}

vector<int> change(vector<int> v) {
	int n = (int)v.size() / 2;
	vector<int> cnt(n, 0);
	for(int i = 0; i < 2*n; i++)
		if(v[i] > 0)
			cnt[v[i] - 1]++;

	for(int i = 1; i < n; i++)
		cnt[i] += cnt[i-1];

	vector<int> cntl = cnt, cntr = cnt;

	for(int i = 0; i < 2*n; i++)
		if(v[i] > 0)
			v[i] = (--cntr[v[i] - 1]) + 1;
		else
			v[i] = -((--cntl[-v[i] - 1]) + 1);
	return v;
}


long long count_swaps(vector<int> S)
{
	S = change(S);
    int n = S.size() / 2;
    return count_adjacent(n, S);
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 252 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 2 ms 256 KB Output is correct
17 Correct 2 ms 256 KB Output is correct
18 Correct 2 ms 256 KB Output is correct
19 Correct 2 ms 256 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 504 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 256 KB Output is correct
25 Correct 2 ms 256 KB Output is correct
26 Correct 2 ms 376 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 2 ms 256 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 376 KB Output is correct
32 Correct 2 ms 376 KB Output is correct
33 Correct 2 ms 376 KB Output is correct
34 Correct 2 ms 376 KB Output is correct
35 Correct 2 ms 376 KB Output is correct
36 Correct 2 ms 256 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 0 ms 376 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 256 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 2 ms 256 KB Output is correct
17 Correct 2 ms 252 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 6 ms 632 KB Output is correct
21 Correct 6 ms 636 KB Output is correct
22 Correct 41 ms 3832 KB Output is correct
23 Correct 35 ms 3832 KB Output is correct
24 Correct 41 ms 3828 KB Output is correct
25 Correct 35 ms 3864 KB Output is correct
26 Correct 41 ms 3872 KB Output is correct
27 Correct 33 ms 3836 KB Output is correct
28 Correct 36 ms 3832 KB Output is correct
29 Correct 36 ms 3960 KB Output is correct
30 Correct 36 ms 3832 KB Output is correct
31 Correct 41 ms 3832 KB Output is correct
32 Correct 36 ms 3832 KB Output is correct
33 Correct 35 ms 3804 KB Output is correct
34 Correct 36 ms 3832 KB Output is correct
35 Correct 2 ms 376 KB Output is correct
36 Correct 2 ms 376 KB Output is correct
37 Correct 36 ms 3832 KB Output is correct
38 Correct 36 ms 3832 KB Output is correct
39 Correct 37 ms 3960 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 42 ms 3832 KB Output is correct
6 Correct 44 ms 3832 KB Output is correct
7 Correct 41 ms 3804 KB Output is correct
8 Correct 40 ms 3960 KB Output is correct
9 Correct 42 ms 3832 KB Output is correct
10 Correct 42 ms 3832 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 252 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 2 ms 256 KB Output is correct
17 Correct 2 ms 256 KB Output is correct
18 Correct 2 ms 256 KB Output is correct
19 Correct 2 ms 256 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 504 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 256 KB Output is correct
25 Correct 2 ms 256 KB Output is correct
26 Correct 2 ms 376 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 2 ms 256 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 376 KB Output is correct
32 Correct 2 ms 376 KB Output is correct
33 Correct 2 ms 376 KB Output is correct
34 Correct 2 ms 376 KB Output is correct
35 Correct 2 ms 376 KB Output is correct
36 Correct 2 ms 256 KB Output is correct
37 Correct 2 ms 256 KB Output is correct
38 Correct 2 ms 256 KB Output is correct
39 Correct 2 ms 376 KB Output is correct
40 Correct 2 ms 256 KB Output is correct
41 Correct 2 ms 376 KB Output is correct
42 Correct 3 ms 376 KB Output is correct
43 Correct 2 ms 376 KB Output is correct
44 Correct 2 ms 376 KB Output is correct
45 Correct 2 ms 376 KB Output is correct
46 Correct 2 ms 376 KB Output is correct
47 Correct 2 ms 376 KB Output is correct
48 Correct 2 ms 376 KB Output is correct
49 Correct 2 ms 376 KB Output is correct
50 Correct 2 ms 376 KB Output is correct
51 Correct 2 ms 376 KB Output is correct
52 Correct 2 ms 376 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 252 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 256 KB Output is correct
16 Correct 2 ms 256 KB Output is correct
17 Correct 2 ms 256 KB Output is correct
18 Correct 2 ms 256 KB Output is correct
19 Correct 2 ms 256 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 504 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 256 KB Output is correct
25 Correct 2 ms 256 KB Output is correct
26 Correct 2 ms 376 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 2 ms 256 KB Output is correct
30 Correct 2 ms 376 KB Output is correct
31 Correct 2 ms 376 KB Output is correct
32 Correct 2 ms 376 KB Output is correct
33 Correct 2 ms 376 KB Output is correct
34 Correct 2 ms 376 KB Output is correct
35 Correct 2 ms 376 KB Output is correct
36 Correct 2 ms 256 KB Output is correct
37 Correct 2 ms 256 KB Output is correct
38 Correct 2 ms 376 KB Output is correct
39 Correct 2 ms 376 KB Output is correct
40 Correct 2 ms 376 KB Output is correct
41 Correct 2 ms 376 KB Output is correct
42 Correct 2 ms 256 KB Output is correct
43 Correct 0 ms 376 KB Output is correct
44 Correct 2 ms 256 KB Output is correct
45 Correct 2 ms 256 KB Output is correct
46 Correct 2 ms 256 KB Output is correct
47 Correct 2 ms 256 KB Output is correct
48 Correct 2 ms 256 KB Output is correct
49 Correct 2 ms 256 KB Output is correct
50 Correct 2 ms 256 KB Output is correct
51 Correct 2 ms 252 KB Output is correct
52 Correct 2 ms 376 KB Output is correct
53 Correct 2 ms 376 KB Output is correct
54 Correct 6 ms 632 KB Output is correct
55 Correct 6 ms 636 KB Output is correct
56 Correct 41 ms 3832 KB Output is correct
57 Correct 35 ms 3832 KB Output is correct
58 Correct 41 ms 3828 KB Output is correct
59 Correct 35 ms 3864 KB Output is correct
60 Correct 41 ms 3872 KB Output is correct
61 Correct 33 ms 3836 KB Output is correct
62 Correct 36 ms 3832 KB Output is correct
63 Correct 36 ms 3960 KB Output is correct
64 Correct 36 ms 3832 KB Output is correct
65 Correct 41 ms 3832 KB Output is correct
66 Correct 36 ms 3832 KB Output is correct
67 Correct 35 ms 3804 KB Output is correct
68 Correct 36 ms 3832 KB Output is correct
69 Correct 2 ms 376 KB Output is correct
70 Correct 2 ms 376 KB Output is correct
71 Correct 36 ms 3832 KB Output is correct
72 Correct 36 ms 3832 KB Output is correct
73 Correct 37 ms 3960 KB Output is correct
74 Correct 2 ms 256 KB Output is correct
75 Correct 2 ms 376 KB Output is correct
76 Correct 2 ms 256 KB Output is correct
77 Correct 2 ms 376 KB Output is correct
78 Correct 42 ms 3832 KB Output is correct
79 Correct 44 ms 3832 KB Output is correct
80 Correct 41 ms 3804 KB Output is correct
81 Correct 40 ms 3960 KB Output is correct
82 Correct 42 ms 3832 KB Output is correct
83 Correct 42 ms 3832 KB Output is correct
84 Correct 2 ms 256 KB Output is correct
85 Correct 2 ms 256 KB Output is correct
86 Correct 2 ms 376 KB Output is correct
87 Correct 2 ms 256 KB Output is correct
88 Correct 2 ms 376 KB Output is correct
89 Correct 3 ms 376 KB Output is correct
90 Correct 2 ms 376 KB Output is correct
91 Correct 2 ms 376 KB Output is correct
92 Correct 2 ms 376 KB Output is correct
93 Correct 2 ms 376 KB Output is correct
94 Correct 2 ms 376 KB Output is correct
95 Correct 2 ms 376 KB Output is correct
96 Correct 2 ms 376 KB Output is correct
97 Correct 2 ms 376 KB Output is correct
98 Correct 2 ms 376 KB Output is correct
99 Correct 2 ms 376 KB Output is correct
100 Correct 2 ms 376 KB Output is correct
101 Correct 7 ms 632 KB Output is correct
102 Correct 6 ms 632 KB Output is correct
103 Correct 47 ms 3828 KB Output is correct
104 Correct 40 ms 3832 KB Output is correct
105 Correct 49 ms 3832 KB Output is correct
106 Correct 42 ms 3828 KB Output is correct
107 Correct 46 ms 3836 KB Output is correct
108 Correct 42 ms 3836 KB Output is correct
109 Correct 37 ms 3832 KB Output is correct
110 Correct 36 ms 3832 KB Output is correct
111 Correct 41 ms 3832 KB Output is correct
112 Correct 47 ms 3868 KB Output is correct
113 Correct 44 ms 3828 KB Output is correct
114 Correct 41 ms 3804 KB Output is correct
115 Correct 42 ms 3832 KB Output is correct