oj.uz

Submission #169552

# Submission time Handle Problem Language Result Execution time Memory
169552 2019-12-20T23:45:25 Z BessieTheCow Arranging Shoes (IOI19_shoes) C++17
100 / 100
 286 ms 13328 KB 
#include "shoes.h"
#include <map>
#include <cmath>
#include <utility>

using namespace std;

constexpr int maxn = 200005;

int n;

//Binary indexed tree aka Fenwick tree template
//Increment indices for 0 indexing, querying index 0 gives 0
//Do not update index 0
//Copy y when doing 2D

int bit[maxn];

void update(int index, int val)
{
	index++;
	for (; index <= n; index += index & -index)
	{
		bit[index] += val;
	}
}

int query(int index)
{
	index++;
	int sum = 0;
	for (; index > 0; index -= index & -index)
	{
		sum += bit[index];
	}
	return sum;
}

//End of template

int cnt[2 * maxn];
int c[maxn];
int id[maxn];
bool leftencountered[maxn];
bool removed[maxn];
int rightindex[maxn];

long long count_swaps(vector<int> s)
{
	n = s.size();
	map<pair<int, int>, int> comp;
	for (int i = 0; i < n; i++)
	{
		c[i] = cnt[s[i] + 100000]++;
		comp[{abs(s[i]), c[i]}];
	}
	int cnt = 0;
	for (auto& v : comp)
	{
		v.second = cnt++;
	}
	for (int i = 0; i < n; i++)
	{
		id[i] = comp[{abs(s[i]), c[i]}];
	}
	long long total = 0;
	for (int i = 0; i < n; i++)
	{
		if (s[i] < 0)
		{
			leftencountered[id[i]] = true;
		}
		else if (!leftencountered[id[i]])
		{
			total++;
		}
	}
	for (int i = 0; i < n; i++)
	{
		rightindex[id[i]] = i;
	}
	int prevremoved = 0;
	for (int i = 0; i < n; i++)
	{
		if (removed[i])
		{
			prevremoved++;
			continue;
		}
		int right = rightindex[id[i]];
		total += right - i - 1 - (query(right - 1) - prevremoved);
		removed[right] = true;
		update(right, 1);
	}
	return total;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 252 KB Output is correct
2 Correct 2 ms 380 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 252 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 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 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 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 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 252 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 0 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 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 376 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 380 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 252 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 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 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 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 376 KB Output is correct
16 Correct 2 ms 380 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 3 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 11 ms 1528 KB Output is correct
21 Correct 11 ms 1596 KB Output is correct
22 Correct 128 ms 12536 KB Output is correct
23 Correct 121 ms 12532 KB Output is correct
24 Correct 125 ms 12408 KB Output is correct
25 Correct 128 ms 11768 KB Output is correct
26 Correct 127 ms 12492 KB Output is correct
27 Correct 118 ms 12280 KB Output is correct
28 Correct 118 ms 12024 KB Output is correct
29 Correct 119 ms 11904 KB Output is correct
30 Correct 118 ms 12028 KB Output is correct
31 Correct 143 ms 12536 KB Output is correct
32 Correct 121 ms 12104 KB Output is correct
33 Correct 119 ms 11768 KB Output is correct
34 Correct 120 ms 12024 KB Output is correct
35 Correct 2 ms 376 KB Output is correct
36 Correct 2 ms 376 KB Output is correct
37 Correct 119 ms 12140 KB Output is correct
38 Correct 119 ms 11896 KB Output is correct
39 Correct 118 ms 12024 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 195 ms 12796 KB Output is correct
6 Correct 189 ms 12664 KB Output is correct
7 Correct 187 ms 12792 KB Output is correct
8 Correct 99 ms 12052 KB Output is correct
9 Correct 182 ms 12724 KB Output is correct
10 Correct 191 ms 12792 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 252 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 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 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 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 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 252 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 0 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 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 376 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 380 KB Output is correct
37 Correct 2 ms 376 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 3 ms 376 KB Output is correct
42 Correct 3 ms 376 KB Output is correct
43 Correct 3 ms 376 KB Output is correct
44 Correct 3 ms 512 KB Output is correct
45 Correct 3 ms 376 KB Output is correct
46 Correct 3 ms 504 KB Output is correct
47 Correct 3 ms 376 KB Output is correct
48 Correct 3 ms 376 KB Output is correct
49 Correct 3 ms 504 KB Output is correct
50 Correct 3 ms 504 KB Output is correct
51 Correct 2 ms 376 KB Output is correct
52 Correct 3 ms 504 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 252 KB Output is correct
2 Correct 2 ms 380 KB Output is correct
3 Correct 2 ms 376 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 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 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 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 252 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 0 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 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 376 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 380 KB Output is correct
37 Correct 2 ms 376 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 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 380 KB Output is correct
51 Correct 2 ms 376 KB Output is correct
52 Correct 3 ms 376 KB Output is correct
53 Correct 2 ms 376 KB Output is correct
54 Correct 11 ms 1528 KB Output is correct
55 Correct 11 ms 1596 KB Output is correct
56 Correct 128 ms 12536 KB Output is correct
57 Correct 121 ms 12532 KB Output is correct
58 Correct 125 ms 12408 KB Output is correct
59 Correct 128 ms 11768 KB Output is correct
60 Correct 127 ms 12492 KB Output is correct
61 Correct 118 ms 12280 KB Output is correct
62 Correct 118 ms 12024 KB Output is correct
63 Correct 119 ms 11904 KB Output is correct
64 Correct 118 ms 12028 KB Output is correct
65 Correct 143 ms 12536 KB Output is correct
66 Correct 121 ms 12104 KB Output is correct
67 Correct 119 ms 11768 KB Output is correct
68 Correct 120 ms 12024 KB Output is correct
69 Correct 2 ms 376 KB Output is correct
70 Correct 2 ms 376 KB Output is correct
71 Correct 119 ms 12140 KB Output is correct
72 Correct 119 ms 11896 KB Output is correct
73 Correct 118 ms 12024 KB Output is correct
74 Correct 2 ms 376 KB Output is correct
75 Correct 2 ms 376 KB Output is correct
76 Correct 2 ms 376 KB Output is correct
77 Correct 2 ms 376 KB Output is correct
78 Correct 195 ms 12796 KB Output is correct
79 Correct 189 ms 12664 KB Output is correct
80 Correct 187 ms 12792 KB Output is correct
81 Correct 99 ms 12052 KB Output is correct
82 Correct 182 ms 12724 KB Output is correct
83 Correct 191 ms 12792 KB Output is correct
84 Correct 2 ms 376 KB Output is correct
85 Correct 2 ms 376 KB Output is correct
86 Correct 2 ms 376 KB Output is correct
87 Correct 2 ms 376 KB Output is correct
88 Correct 3 ms 376 KB Output is correct
89 Correct 3 ms 376 KB Output is correct
90 Correct 3 ms 376 KB Output is correct
91 Correct 3 ms 512 KB Output is correct
92 Correct 3 ms 376 KB Output is correct
93 Correct 3 ms 504 KB Output is correct
94 Correct 3 ms 376 KB Output is correct
95 Correct 3 ms 376 KB Output is correct
96 Correct 3 ms 504 KB Output is correct
97 Correct 3 ms 504 KB Output is correct
98 Correct 2 ms 376 KB Output is correct
99 Correct 3 ms 504 KB Output is correct
100 Correct 3 ms 508 KB Output is correct
101 Correct 15 ms 1528 KB Output is correct
102 Correct 15 ms 1528 KB Output is correct
103 Correct 210 ms 13176 KB Output is correct
104 Correct 155 ms 13148 KB Output is correct
105 Correct 184 ms 13176 KB Output is correct
106 Correct 185 ms 12792 KB Output is correct
107 Correct 160 ms 13176 KB Output is correct
108 Correct 157 ms 13328 KB Output is correct
109 Correct 90 ms 12024 KB Output is correct
110 Correct 116 ms 11996 KB Output is correct
111 Correct 185 ms 12656 KB Output is correct
112 Correct 247 ms 13248 KB Output is correct
113 Correct 286 ms 12664 KB Output is correct
114 Correct 210 ms 12792 KB Output is correct
115 Correct 246 ms 12712 KB Output is correct