oj.uz

Submission #256831

# Submission time Handle Problem Language Result Execution time Memory
256831 2020-08-03T09:15:12 Z atoiz Arranging Shoes (IOI19_shoes) C++14
100 / 100
 220 ms 21308 KB 
#include "shoes.h"
#include <iostream>
#include <vector>
#include <algorithm>
#include <cassert>
#include <cstring>
#include <unordered_map>

using namespace std;
using ll = long long;

#define FOR(i, a, b) for (int i = a; i <= b; ++i)
#define FORA(i, a) for (auto &i : a)
#define FORB(i, a, b) for (int i = a; i >= b; --i)

ll count_swaps(vector<int> s) {
	int n = (int) s.size();
	unordered_map<int, vector<int>> pos;
	FORB(i, n - 1, 0) pos[s[i]].push_back(i);

	vector<int> bit(n + 1, 0);
	ll ans = 0;
	FOR(i, 0, n - 1) if (pos[s[i]].back() == i) {
		pos[s[i]].pop_back();
		if (s[i] < 0) {
			int j = pos[-s[i]].back();
			pos[-s[i]].pop_back();

			ans += i;
			for (int x = i + 1; x > 0; x -= x & (-x)) ans -= bit[x];
			for (int x = i + 1; x <= n; x += x & (-x)) ++bit[x];

			ans += j;
			for (int x = j + 1; x > 0; x -= x & (-x)) ans -= bit[x];
			for (int x = j + 1; x <= n; x += x & (-x)) ++bit[x];
		} else {
			int j = pos[-s[i]].back();
			pos[-s[i]].pop_back();

			ans += j;
			for (int x = j + 1; x > 0; x -= x & (-x)) ans -= bit[x];
			for (int x = j + 1; x <= n; x += x & (-x)) ++bit[x];

			ans += i;
			for (int x = i + 1; x > 0; x -= x & (-x)) ans -= bit[x];
			for (int x = i + 1; x <= n; x += x & (-x)) ++bit[x];
		}
	}

	return ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 1 ms 256 KB Output is correct
17 Correct 1 ms 256 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 0 ms 256 KB Output is correct
21 Correct 0 ms 256 KB Output is correct
22 Correct 0 ms 256 KB Output is correct
23 Correct 0 ms 256 KB Output is correct
24 Correct 0 ms 256 KB Output is correct
25 Correct 0 ms 256 KB Output is correct
26 Correct 0 ms 256 KB Output is correct
27 Correct 0 ms 256 KB Output is correct
28 Correct 0 ms 256 KB Output is correct
29 Correct 0 ms 256 KB Output is correct
30 Correct 0 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 ms 256 KB Output is correct
33 Correct 0 ms 256 KB Output is correct
34 Correct 0 ms 256 KB Output is correct
35 Correct 0 ms 256 KB Output is correct
36 Correct 0 ms 256 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 1 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 1 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 1 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 1 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 1 ms 256 KB Output is correct
17 Correct 1 ms 256 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 6 ms 768 KB Output is correct
21 Correct 5 ms 768 KB Output is correct
22 Correct 54 ms 3968 KB Output is correct
23 Correct 51 ms 4076 KB Output is correct
24 Correct 51 ms 3992 KB Output is correct
25 Correct 49 ms 3952 KB Output is correct
26 Correct 63 ms 4236 KB Output is correct
27 Correct 50 ms 4076 KB Output is correct
28 Correct 50 ms 3952 KB Output is correct
29 Correct 50 ms 3980 KB Output is correct
30 Correct 51 ms 3960 KB Output is correct
31 Correct 52 ms 3972 KB Output is correct
32 Correct 45 ms 3952 KB Output is correct
33 Correct 50 ms 3952 KB Output is correct
34 Correct 50 ms 3952 KB Output is correct
35 Correct 0 ms 256 KB Output is correct
36 Correct 0 ms 256 KB Output is correct
37 Correct 50 ms 3952 KB Output is correct
38 Correct 49 ms 3964 KB Output is correct
39 Correct 47 ms 3952 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 171 ms 20412 KB Output is correct
6 Correct 82 ms 5496 KB Output is correct
7 Correct 169 ms 20460 KB Output is correct
8 Correct 60 ms 3908 KB Output is correct
9 Correct 220 ms 20388 KB Output is correct
10 Correct 191 ms 11784 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 1 ms 256 KB Output is correct
17 Correct 1 ms 256 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 0 ms 256 KB Output is correct
21 Correct 0 ms 256 KB Output is correct
22 Correct 0 ms 256 KB Output is correct
23 Correct 0 ms 256 KB Output is correct
24 Correct 0 ms 256 KB Output is correct
25 Correct 0 ms 256 KB Output is correct
26 Correct 0 ms 256 KB Output is correct
27 Correct 0 ms 256 KB Output is correct
28 Correct 0 ms 256 KB Output is correct
29 Correct 0 ms 256 KB Output is correct
30 Correct 0 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 ms 256 KB Output is correct
33 Correct 0 ms 256 KB Output is correct
34 Correct 0 ms 256 KB Output is correct
35 Correct 0 ms 256 KB Output is correct
36 Correct 0 ms 256 KB Output is correct
37 Correct 0 ms 256 KB Output is correct
38 Correct 1 ms 256 KB Output is correct
39 Correct 1 ms 384 KB Output is correct
40 Correct 1 ms 384 KB Output is correct
41 Correct 2 ms 512 KB Output is correct
42 Correct 1 ms 512 KB Output is correct
43 Correct 1 ms 512 KB Output is correct
44 Correct 2 ms 512 KB Output is correct
45 Correct 1 ms 512 KB Output is correct
46 Correct 1 ms 384 KB Output is correct
47 Correct 2 ms 384 KB Output is correct
48 Correct 1 ms 384 KB Output is correct
49 Correct 1 ms 384 KB Output is correct
50 Correct 1 ms 384 KB Output is correct
51 Correct 1 ms 384 KB Output is correct
52 Correct 1 ms 512 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 0 ms 256 KB Output is correct
16 Correct 1 ms 256 KB Output is correct
17 Correct 1 ms 256 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 0 ms 256 KB Output is correct
21 Correct 0 ms 256 KB Output is correct
22 Correct 0 ms 256 KB Output is correct
23 Correct 0 ms 256 KB Output is correct
24 Correct 0 ms 256 KB Output is correct
25 Correct 0 ms 256 KB Output is correct
26 Correct 0 ms 256 KB Output is correct
27 Correct 0 ms 256 KB Output is correct
28 Correct 0 ms 256 KB Output is correct
29 Correct 0 ms 256 KB Output is correct
30 Correct 0 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 ms 256 KB Output is correct
33 Correct 0 ms 256 KB Output is correct
34 Correct 0 ms 256 KB Output is correct
35 Correct 0 ms 256 KB Output is correct
36 Correct 0 ms 256 KB Output is correct
37 Correct 0 ms 256 KB Output is correct
38 Correct 1 ms 256 KB Output is correct
39 Correct 0 ms 256 KB Output is correct
40 Correct 1 ms 256 KB Output is correct
41 Correct 0 ms 256 KB Output is correct
42 Correct 0 ms 256 KB Output is correct
43 Correct 0 ms 256 KB Output is correct
44 Correct 1 ms 256 KB Output is correct
45 Correct 0 ms 256 KB Output is correct
46 Correct 1 ms 256 KB Output is correct
47 Correct 0 ms 256 KB Output is correct
48 Correct 1 ms 256 KB Output is correct
49 Correct 0 ms 256 KB Output is correct
50 Correct 1 ms 256 KB Output is correct
51 Correct 1 ms 256 KB Output is correct
52 Correct 1 ms 384 KB Output is correct
53 Correct 1 ms 384 KB Output is correct
54 Correct 6 ms 768 KB Output is correct
55 Correct 5 ms 768 KB Output is correct
56 Correct 54 ms 3968 KB Output is correct
57 Correct 51 ms 4076 KB Output is correct
58 Correct 51 ms 3992 KB Output is correct
59 Correct 49 ms 3952 KB Output is correct
60 Correct 63 ms 4236 KB Output is correct
61 Correct 50 ms 4076 KB Output is correct
62 Correct 50 ms 3952 KB Output is correct
63 Correct 50 ms 3980 KB Output is correct
64 Correct 51 ms 3960 KB Output is correct
65 Correct 52 ms 3972 KB Output is correct
66 Correct 45 ms 3952 KB Output is correct
67 Correct 50 ms 3952 KB Output is correct
68 Correct 50 ms 3952 KB Output is correct
69 Correct 0 ms 256 KB Output is correct
70 Correct 0 ms 256 KB Output is correct
71 Correct 50 ms 3952 KB Output is correct
72 Correct 49 ms 3964 KB Output is correct
73 Correct 47 ms 3952 KB Output is correct
74 Correct 0 ms 256 KB Output is correct
75 Correct 0 ms 256 KB Output is correct
76 Correct 0 ms 256 KB Output is correct
77 Correct 0 ms 256 KB Output is correct
78 Correct 171 ms 20412 KB Output is correct
79 Correct 82 ms 5496 KB Output is correct
80 Correct 169 ms 20460 KB Output is correct
81 Correct 60 ms 3908 KB Output is correct
82 Correct 220 ms 20388 KB Output is correct
83 Correct 191 ms 11784 KB Output is correct
84 Correct 0 ms 256 KB Output is correct
85 Correct 1 ms 256 KB Output is correct
86 Correct 1 ms 384 KB Output is correct
87 Correct 1 ms 384 KB Output is correct
88 Correct 2 ms 512 KB Output is correct
89 Correct 1 ms 512 KB Output is correct
90 Correct 1 ms 512 KB Output is correct
91 Correct 2 ms 512 KB Output is correct
92 Correct 1 ms 512 KB Output is correct
93 Correct 1 ms 384 KB Output is correct
94 Correct 2 ms 384 KB Output is correct
95 Correct 1 ms 384 KB Output is correct
96 Correct 1 ms 384 KB Output is correct
97 Correct 1 ms 384 KB Output is correct
98 Correct 1 ms 384 KB Output is correct
99 Correct 1 ms 512 KB Output is correct
100 Correct 1 ms 512 KB Output is correct
101 Correct 11 ms 2304 KB Output is correct
102 Correct 9 ms 1024 KB Output is correct
103 Correct 189 ms 21308 KB Output is correct
104 Correct 135 ms 21308 KB Output is correct
105 Correct 181 ms 14524 KB Output is correct
106 Correct 160 ms 21308 KB Output is correct
107 Correct 82 ms 6776 KB Output is correct
108 Correct 88 ms 8360 KB Output is correct
109 Correct 50 ms 4912 KB Output is correct
110 Correct 57 ms 4848 KB Output is correct
111 Correct 172 ms 19564 KB Output is correct
112 Correct 187 ms 17836 KB Output is correct
113 Correct 94 ms 6904 KB Output is correct
114 Correct 169 ms 21308 KB Output is correct
115 Correct 176 ms 21308 KB Output is correct