Submission #360633

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
360633	2021-01-28T05:23:30 Z	MacTinCito	Arranging Shoes (IOI19_shoes)	C++14	100 / 100	48 ms	5120 KB

shoes

#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	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	0 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	0 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	0 ms	364 KB	Output is correct
10	Correct	0 ms	364 KB	Output is correct
11	Correct	0 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	1 ms	364 KB	Output is correct
15	Correct	0 ms	364 KB	Output is correct
16	Correct	0 ms	364 KB	Output is correct
17	Correct	0 ms	364 KB	Output is correct
18	Correct	0 ms	364 KB	Output is correct
19	Correct	0 ms	364 KB	Output is correct
20	Correct	0 ms	364 KB	Output is correct
21	Correct	1 ms	364 KB	Output is correct
22	Correct	0 ms	364 KB	Output is correct
23	Correct	0 ms	364 KB	Output is correct
24	Correct	0 ms	364 KB	Output is correct
25	Correct	0 ms	364 KB	Output is correct
26	Correct	0 ms	364 KB	Output is correct
27	Correct	0 ms	364 KB	Output is correct
28	Correct	1 ms	364 KB	Output is correct
29	Correct	0 ms	364 KB	Output is correct
30	Correct	1 ms	364 KB	Output is correct
31	Correct	0 ms	364 KB	Output is correct
32	Correct	0 ms	364 KB	Output is correct
33	Correct	0 ms	360 KB	Output is correct
34	Correct	0 ms	364 KB	Output is correct
35	Correct	0 ms	364 KB	Output is correct
36	Correct	0 ms	384 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	0 ms	364 KB	Output is correct
4	Correct	0 ms	364 KB	Output is correct
5	Correct	0 ms	364 KB	Output is correct
6	Correct	0 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	0 ms	364 KB	Output is correct
11	Correct	0 ms	364 KB	Output is correct
12	Correct	0 ms	364 KB	Output is correct
13	Correct	0 ms	364 KB	Output is correct
14	Correct	0 ms	364 KB	Output is correct
15	Correct	0 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	6 ms	756 KB	Output is correct
21	Correct	4 ms	748 KB	Output is correct
22	Correct	39 ms	5100 KB	Output is correct
23	Correct	37 ms	5100 KB	Output is correct
24	Correct	39 ms	5100 KB	Output is correct
25	Correct	45 ms	4844 KB	Output is correct
26	Correct	39 ms	5120 KB	Output is correct
27	Correct	34 ms	4844 KB	Output is correct
28	Correct	35 ms	5100 KB	Output is correct
29	Correct	35 ms	5100 KB	Output is correct
30	Correct	35 ms	5100 KB	Output is correct
31	Correct	39 ms	5100 KB	Output is correct
32	Correct	35 ms	5100 KB	Output is correct
33	Correct	34 ms	4844 KB	Output is correct
34	Correct	35 ms	5100 KB	Output is correct
35	Correct	1 ms	364 KB	Output is correct
36	Correct	0 ms	364 KB	Output is correct
37	Correct	38 ms	5100 KB	Output is correct
38	Correct	35 ms	5100 KB	Output is correct
39	Correct	35 ms	5100 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	0 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	37 ms	5100 KB	Output is correct
6	Correct	48 ms	5100 KB	Output is correct
7	Correct	40 ms	5100 KB	Output is correct
8	Correct	34 ms	5100 KB	Output is correct
9	Correct	36 ms	5100 KB	Output is correct
10	Correct	38 ms	5100 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	0 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	0 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	0 ms	364 KB	Output is correct
10	Correct	0 ms	364 KB	Output is correct
11	Correct	0 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	1 ms	364 KB	Output is correct
15	Correct	0 ms	364 KB	Output is correct
16	Correct	0 ms	364 KB	Output is correct
17	Correct	0 ms	364 KB	Output is correct
18	Correct	0 ms	364 KB	Output is correct
19	Correct	0 ms	364 KB	Output is correct
20	Correct	0 ms	364 KB	Output is correct
21	Correct	1 ms	364 KB	Output is correct
22	Correct	0 ms	364 KB	Output is correct
23	Correct	0 ms	364 KB	Output is correct
24	Correct	0 ms	364 KB	Output is correct
25	Correct	0 ms	364 KB	Output is correct
26	Correct	0 ms	364 KB	Output is correct
27	Correct	0 ms	364 KB	Output is correct
28	Correct	1 ms	364 KB	Output is correct
29	Correct	0 ms	364 KB	Output is correct
30	Correct	1 ms	364 KB	Output is correct
31	Correct	0 ms	364 KB	Output is correct
32	Correct	0 ms	364 KB	Output is correct
33	Correct	0 ms	360 KB	Output is correct
34	Correct	0 ms	364 KB	Output is correct
35	Correct	0 ms	364 KB	Output is correct
36	Correct	0 ms	384 KB	Output is correct
37	Correct	0 ms	364 KB	Output is correct
38	Correct	0 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	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	1 ms	364 KB	Output is correct
47	Correct	1 ms	364 KB	Output is correct
48	Correct	1 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

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	0 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	0 ms	364 KB	Output is correct
8	Correct	1 ms	364 KB	Output is correct
9	Correct	0 ms	364 KB	Output is correct
10	Correct	0 ms	364 KB	Output is correct
11	Correct	0 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	1 ms	364 KB	Output is correct
15	Correct	0 ms	364 KB	Output is correct
16	Correct	0 ms	364 KB	Output is correct
17	Correct	0 ms	364 KB	Output is correct
18	Correct	0 ms	364 KB	Output is correct
19	Correct	0 ms	364 KB	Output is correct
20	Correct	0 ms	364 KB	Output is correct
21	Correct	1 ms	364 KB	Output is correct
22	Correct	0 ms	364 KB	Output is correct
23	Correct	0 ms	364 KB	Output is correct
24	Correct	0 ms	364 KB	Output is correct
25	Correct	0 ms	364 KB	Output is correct
26	Correct	0 ms	364 KB	Output is correct
27	Correct	0 ms	364 KB	Output is correct
28	Correct	1 ms	364 KB	Output is correct
29	Correct	0 ms	364 KB	Output is correct
30	Correct	1 ms	364 KB	Output is correct
31	Correct	0 ms	364 KB	Output is correct
32	Correct	0 ms	364 KB	Output is correct
33	Correct	0 ms	360 KB	Output is correct
34	Correct	0 ms	364 KB	Output is correct
35	Correct	0 ms	364 KB	Output is correct
36	Correct	0 ms	384 KB	Output is correct
37	Correct	0 ms	364 KB	Output is correct
38	Correct	0 ms	364 KB	Output is correct
39	Correct	0 ms	364 KB	Output is correct
40	Correct	0 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	0 ms	364 KB	Output is correct
45	Correct	0 ms	364 KB	Output is correct
46	Correct	0 ms	364 KB	Output is correct
47	Correct	0 ms	364 KB	Output is correct
48	Correct	0 ms	364 KB	Output is correct
49	Correct	0 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	6 ms	756 KB	Output is correct
55	Correct	4 ms	748 KB	Output is correct
56	Correct	39 ms	5100 KB	Output is correct
57	Correct	37 ms	5100 KB	Output is correct
58	Correct	39 ms	5100 KB	Output is correct
59	Correct	45 ms	4844 KB	Output is correct
60	Correct	39 ms	5120 KB	Output is correct
61	Correct	34 ms	4844 KB	Output is correct
62	Correct	35 ms	5100 KB	Output is correct
63	Correct	35 ms	5100 KB	Output is correct
64	Correct	35 ms	5100 KB	Output is correct
65	Correct	39 ms	5100 KB	Output is correct
66	Correct	35 ms	5100 KB	Output is correct
67	Correct	34 ms	4844 KB	Output is correct
68	Correct	35 ms	5100 KB	Output is correct
69	Correct	1 ms	364 KB	Output is correct
70	Correct	0 ms	364 KB	Output is correct
71	Correct	38 ms	5100 KB	Output is correct
72	Correct	35 ms	5100 KB	Output is correct
73	Correct	35 ms	5100 KB	Output is correct
74	Correct	1 ms	364 KB	Output is correct
75	Correct	0 ms	364 KB	Output is correct
76	Correct	1 ms	364 KB	Output is correct
77	Correct	1 ms	364 KB	Output is correct
78	Correct	37 ms	5100 KB	Output is correct
79	Correct	48 ms	5100 KB	Output is correct
80	Correct	40 ms	5100 KB	Output is correct
81	Correct	34 ms	5100 KB	Output is correct
82	Correct	36 ms	5100 KB	Output is correct
83	Correct	38 ms	5100 KB	Output is correct
84	Correct	0 ms	364 KB	Output is correct
85	Correct	0 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	1 ms	364 KB	Output is correct
89	Correct	1 ms	364 KB	Output is correct
90	Correct	1 ms	364 KB	Output is correct
91	Correct	1 ms	364 KB	Output is correct
92	Correct	1 ms	364 KB	Output is correct
93	Correct	1 ms	364 KB	Output is correct
94	Correct	1 ms	364 KB	Output is correct
95	Correct	1 ms	364 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	1 ms	364 KB	Output is correct
100	Correct	1 ms	364 KB	Output is correct
101	Correct	4 ms	748 KB	Output is correct
102	Correct	4 ms	768 KB	Output is correct
103	Correct	41 ms	5100 KB	Output is correct
104	Correct	37 ms	5100 KB	Output is correct
105	Correct	41 ms	5100 KB	Output is correct
106	Correct	35 ms	5100 KB	Output is correct
107	Correct	47 ms	5100 KB	Output is correct
108	Correct	42 ms	5100 KB	Output is correct
109	Correct	35 ms	5100 KB	Output is correct
110	Correct	35 ms	5100 KB	Output is correct
111	Correct	36 ms	5120 KB	Output is correct
112	Correct	45 ms	5100 KB	Output is correct
113	Correct	37 ms	5100 KB	Output is correct
114	Correct	37 ms	5100 KB	Output is correct
115	Correct	35 ms	5100 KB	Output is correct

Submission #360633

Compilation message

Subtask #1 10.0 / 10.0

Subtask #2 20.0 / 20.0

Subtask #3 20.0 / 20.0

Subtask #4 15.0 / 15.0

Subtask #5 20.0 / 20.0

Subtask #6 15.0 / 15.0

Subtask #1
10.0 / 10.0

Subtask #2
20.0 / 20.0

Subtask #3
20.0 / 20.0

Subtask #4
15.0 / 15.0

Subtask #5
20.0 / 20.0

Subtask #6
15.0 / 15.0