oj.uz

Submission #350638

# Submission time Handle Problem Language Result Execution time Memory
350638 2021-01-19T07:09:10 Z phenius Arranging Shoes (IOI19_shoes) C++14
100 / 100
 50 ms 5084 KB 
#include "shoes.h"


using namespace std;
#define MAXN 100000

int a[2 * MAXN];
int shoes[2 * MAXN];
int index[2 * MAXN + 1];
int cnt[MAXN], cntl[MAXN];
int N;

void clear_array(int *ar, int n) {
	for (register int i = 0; i < n; i++)
		ar[i] = 0;
}

void copy_arr(int *a1, vector <int> a2, int n) {
	for (int i = 0; i < n; i++)
		a1[i] = a2[i];
}

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

public:
	BIT()
	{
		clear_array(a, 2 * N);
	}

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

	void insert(int index)
	{
		for (; index < 2 * N; index = index | (index + 1))
		{
			a[index]++;
		}
	}
};

void create_index()
{
	clear_array(index, 2 * N + 1);
	for (register int i = 0; i < 2 * N; i++)
	{
		index[shoes[i] + N] = i;
	}
}

void convert() {
	clear_array(cnt, N);

	for (int i = 0; i < 2 * N; i++)
		if (shoes[i] > 0)
			cnt[shoes[i] - 1]++;

	for (int i = 1; i < N; i++) {
		cnt[i] += cnt[i - 1];
		cntl[i] = cnt[i];
	}
	cntl[0] = cnt[0];

	for (int i = 0; i < 2 * N; i++)
		if (shoes[i] > 0)
			shoes[i] = (--cntl[shoes[i] - 1]) + 1;
		else
			shoes[i] = -((--cnt[-shoes[i] - 1]) + 1);
}

long long count_swaps(vector<int> S)
{
	N = S.size() / 2;
	copy_arr(shoes, S, 2 * N);

	convert();
	create_index();
	BIT tree = BIT();

	long long ans = 0;

	for (int i = 0; i < 2 * N; i++)
	{
		if (shoes[i] != 0)
		{
			int pos = index[-shoes[i] + N];
			ans += pos - i - tree.count(i, pos) - (shoes[i] < 0 ? 1 : 0);
			shoes[pos] = 0;
			tree.insert(pos);
		}
	}
	return ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 0 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 1 ms 364 KB Output is correct
7 Correct 0 ms 364 KB Output is correct
8 Correct 0 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 0 ms 364 KB Output is correct
14 Correct 0 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 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 0 ms 364 KB Output is correct
22 Correct 0 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 0 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 0 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 492 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 0 ms 364 KB Output is correct
36 Correct 0 ms 364 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 0 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 0 ms 364 KB Output is correct
8 Correct 0 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 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 0 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 4 ms 876 KB Output is correct
21 Correct 4 ms 876 KB Output is correct
22 Correct 39 ms 4956 KB Output is correct
23 Correct 48 ms 4956 KB Output is correct
24 Correct 38 ms 4956 KB Output is correct
25 Correct 36 ms 4956 KB Output is correct
26 Correct 39 ms 4984 KB Output is correct
27 Correct 35 ms 4972 KB Output is correct
28 Correct 35 ms 4956 KB Output is correct
29 Correct 40 ms 4956 KB Output is correct
30 Correct 41 ms 4956 KB Output is correct
31 Correct 45 ms 4956 KB Output is correct
32 Correct 34 ms 4972 KB Output is correct
33 Correct 33 ms 4956 KB Output is correct
34 Correct 46 ms 4956 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 0 ms 364 KB Output is correct
37 Correct 34 ms 4956 KB Output is correct
38 Correct 37 ms 4956 KB Output is correct
39 Correct 41 ms 4956 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 1 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 43 ms 4956 KB Output is correct
6 Correct 42 ms 4956 KB Output is correct
7 Correct 50 ms 4956 KB Output is correct
8 Correct 39 ms 4956 KB Output is correct
9 Correct 36 ms 4988 KB Output is correct
10 Correct 36 ms 4956 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 364 KB Output is correct
2 Correct 0 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 1 ms 364 KB Output is correct
7 Correct 0 ms 364 KB Output is correct
8 Correct 0 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 0 ms 364 KB Output is correct
14 Correct 0 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 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 0 ms 364 KB Output is correct
22 Correct 0 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 0 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 0 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 492 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 0 ms 364 KB Output is correct
36 Correct 0 ms 364 KB Output is correct
37 Correct 1 ms 364 KB Output is correct
38 Correct 1 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 0 ms 364 KB Output is correct
2 Correct 0 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 1 ms 364 KB Output is correct
7 Correct 0 ms 364 KB Output is correct
8 Correct 0 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 0 ms 364 KB Output is correct
14 Correct 0 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 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 0 ms 364 KB Output is correct
22 Correct 0 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 0 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 0 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 492 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 0 ms 364 KB Output is correct
36 Correct 0 ms 364 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 0 ms 364 KB Output is correct
42 Correct 0 ms 364 KB Output is correct
43 Correct 0 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 0 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 4 ms 876 KB Output is correct
55 Correct 4 ms 876 KB Output is correct
56 Correct 39 ms 4956 KB Output is correct
57 Correct 48 ms 4956 KB Output is correct
58 Correct 38 ms 4956 KB Output is correct
59 Correct 36 ms 4956 KB Output is correct
60 Correct 39 ms 4984 KB Output is correct
61 Correct 35 ms 4972 KB Output is correct
62 Correct 35 ms 4956 KB Output is correct
63 Correct 40 ms 4956 KB Output is correct
64 Correct 41 ms 4956 KB Output is correct
65 Correct 45 ms 4956 KB Output is correct
66 Correct 34 ms 4972 KB Output is correct
67 Correct 33 ms 4956 KB Output is correct
68 Correct 46 ms 4956 KB Output is correct
69 Correct 1 ms 364 KB Output is correct
70 Correct 0 ms 364 KB Output is correct
71 Correct 34 ms 4956 KB Output is correct
72 Correct 37 ms 4956 KB Output is correct
73 Correct 41 ms 4956 KB Output is correct
74 Correct 1 ms 364 KB Output is correct
75 Correct 1 ms 364 KB Output is correct
76 Correct 0 ms 364 KB Output is correct
77 Correct 1 ms 384 KB Output is correct
78 Correct 43 ms 4956 KB Output is correct
79 Correct 42 ms 4956 KB Output is correct
80 Correct 50 ms 4956 KB Output is correct
81 Correct 39 ms 4956 KB Output is correct
82 Correct 36 ms 4988 KB Output is correct
83 Correct 36 ms 4956 KB Output is correct
84 Correct 1 ms 364 KB Output is correct
85 Correct 1 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 876 KB Output is correct
102 Correct 4 ms 876 KB Output is correct
103 Correct 41 ms 4956 KB Output is correct
104 Correct 37 ms 4972 KB Output is correct
105 Correct 47 ms 4956 KB Output is correct
106 Correct 35 ms 4956 KB Output is correct
107 Correct 40 ms 4956 KB Output is correct
108 Correct 38 ms 4956 KB Output is correct
109 Correct 35 ms 4956 KB Output is correct
110 Correct 35 ms 4956 KB Output is correct
111 Correct 36 ms 4956 KB Output is correct
112 Correct 44 ms 5084 KB Output is correct
113 Correct 37 ms 4972 KB Output is correct
114 Correct 35 ms 5084 KB Output is correct
115 Correct 35 ms 4956 KB Output is correct