oj.uz

Submission #145385

# Submission time Handle Problem Language Result Execution time Memory
145385 2019-08-19T18:51:55 Z Eae02 Arranging Shoes (IOI19_shoes) C++14
100 / 100
 678 ms 148040 KB 
#include "shoes.h"
#include <bits/stdc++.h>

using ll = long long;
using namespace std;

map<int, deque<int>> positions;

inline int LSB(int x)
{
	return x & (-x);
}

class FenwickTree
{
public:
	FenwickTree(size_t size) : V(size + 1, 0) { }
	
	//Prefix sum of the first n items (nth not included)
	int PrefixSum(int n)
	{
		int sum = 0;
		for (; n; n -= LSB(n))
			sum += V[n];
		return sum;
	}
	
	void Adjust(int i, int delta)
	{
		i++;
		for (; i < V.size(); i += LSB(i))
			V[i] += delta;
	}
	
private:
	std::vector<int> V;
};

ll count_swaps(vector<int> s) {
	FenwickTree removed(s.size());
	
	for (int i = 0; i < (int)s.size(); i++) {
		positions[s[i]].push_back(i);
	}
	
	vector<bool> done(s.size(), false);
	
	ll swaps = 0;
	for (int i = 0; i < (int)s.size(); i++) {
		if (done[i])
			continue;
		
		int v = s[i];
		
		deque<int>& posNeg = positions.at(-v);
		int negIdx = posNeg.front();
		posNeg.pop_front();
		positions.at(v).pop_front();
		
		swaps += negIdx - (removed.PrefixSum(negIdx) - removed.PrefixSum(i)) - i;
		
		removed.Adjust(negIdx, 1);
		done[negIdx] = true;
		
		if (v < 0)
			swaps--;
	}
	
	return swaps;
}

Compilation message

shoes.cpp: In member function 'void FenwickTree::Adjust(int, int)':
shoes.cpp:31:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (; i < V.size(); i += LSB(i))
          ~~^~~~~~~~~~

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 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 252 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 396 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 256 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 380 KB Output is correct
23 Correct 2 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 256 KB Output is correct
31 Correct 2 ms 256 KB Output is correct
32 Correct 2 ms 256 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 252 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 256 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 3 ms 256 KB Output is correct
12 Correct 3 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 376 KB Output is correct
17 Correct 2 ms 256 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 5 ms 760 KB Output is correct
21 Correct 6 ms 712 KB Output is correct
22 Correct 39 ms 4728 KB Output is correct
23 Correct 36 ms 4856 KB Output is correct
24 Correct 41 ms 4856 KB Output is correct
25 Correct 33 ms 4604 KB Output is correct
26 Correct 39 ms 4728 KB Output is correct
27 Correct 32 ms 4600 KB Output is correct
28 Correct 34 ms 4728 KB Output is correct
29 Correct 34 ms 4776 KB Output is correct
30 Correct 37 ms 4876 KB Output is correct
31 Correct 42 ms 4728 KB Output is correct
32 Correct 37 ms 4856 KB Output is correct
33 Correct 36 ms 4600 KB Output is correct
34 Correct 36 ms 4728 KB Output is correct
35 Correct 3 ms 268 KB Output is correct
36 Correct 2 ms 380 KB Output is correct
37 Correct 37 ms 4728 KB Output is correct
38 Correct 38 ms 4728 KB Output is correct
39 Correct 35 ms 4728 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 372 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 569 ms 147932 KB Output is correct
6 Correct 159 ms 16632 KB Output is correct
7 Correct 535 ms 147936 KB Output is correct
8 Correct 42 ms 4856 KB Output is correct
9 Correct 553 ms 147976 KB Output is correct
10 Correct 374 ms 76024 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 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 252 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 396 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 256 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 380 KB Output is correct
23 Correct 2 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 256 KB Output is correct
31 Correct 2 ms 256 KB Output is correct
32 Correct 2 ms 256 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 252 KB Output is correct
37 Correct 2 ms 376 KB Output is correct
38 Correct 2 ms 376 KB Output is correct
39 Correct 3 ms 504 KB Output is correct
40 Correct 3 ms 632 KB Output is correct
41 Correct 5 ms 1784 KB Output is correct
42 Correct 4 ms 1784 KB Output is correct
43 Correct 4 ms 1656 KB Output is correct
44 Correct 4 ms 1400 KB Output is correct
45 Correct 4 ms 1272 KB Output is correct
46 Correct 4 ms 1144 KB Output is correct
47 Correct 3 ms 888 KB Output is correct
48 Correct 3 ms 760 KB Output is correct
49 Correct 3 ms 632 KB Output is correct
50 Correct 3 ms 376 KB Output is correct
51 Correct 2 ms 376 KB Output is correct
52 Correct 4 ms 1784 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 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 252 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 396 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 256 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 380 KB Output is correct
23 Correct 2 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 256 KB Output is correct
31 Correct 2 ms 256 KB Output is correct
32 Correct 2 ms 256 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 252 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 256 KB Output is correct
42 Correct 2 ms 376 KB Output is correct
43 Correct 2 ms 256 KB Output is correct
44 Correct 2 ms 376 KB Output is correct
45 Correct 3 ms 256 KB Output is correct
46 Correct 3 ms 256 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 256 KB Output is correct
50 Correct 2 ms 376 KB Output is correct
51 Correct 2 ms 256 KB Output is correct
52 Correct 2 ms 376 KB Output is correct
53 Correct 2 ms 376 KB Output is correct
54 Correct 5 ms 760 KB Output is correct
55 Correct 6 ms 712 KB Output is correct
56 Correct 39 ms 4728 KB Output is correct
57 Correct 36 ms 4856 KB Output is correct
58 Correct 41 ms 4856 KB Output is correct
59 Correct 33 ms 4604 KB Output is correct
60 Correct 39 ms 4728 KB Output is correct
61 Correct 32 ms 4600 KB Output is correct
62 Correct 34 ms 4728 KB Output is correct
63 Correct 34 ms 4776 KB Output is correct
64 Correct 37 ms 4876 KB Output is correct
65 Correct 42 ms 4728 KB Output is correct
66 Correct 37 ms 4856 KB Output is correct
67 Correct 36 ms 4600 KB Output is correct
68 Correct 36 ms 4728 KB Output is correct
69 Correct 3 ms 268 KB Output is correct
70 Correct 2 ms 380 KB Output is correct
71 Correct 37 ms 4728 KB Output is correct
72 Correct 38 ms 4728 KB Output is correct
73 Correct 35 ms 4728 KB Output is correct
74 Correct 2 ms 372 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 569 ms 147932 KB Output is correct
79 Correct 159 ms 16632 KB Output is correct
80 Correct 535 ms 147936 KB Output is correct
81 Correct 42 ms 4856 KB Output is correct
82 Correct 553 ms 147976 KB Output is correct
83 Correct 374 ms 76024 KB Output is correct
84 Correct 2 ms 376 KB Output is correct
85 Correct 2 ms 376 KB Output is correct
86 Correct 3 ms 504 KB Output is correct
87 Correct 3 ms 632 KB Output is correct
88 Correct 5 ms 1784 KB Output is correct
89 Correct 4 ms 1784 KB Output is correct
90 Correct 4 ms 1656 KB Output is correct
91 Correct 4 ms 1400 KB Output is correct
92 Correct 4 ms 1272 KB Output is correct
93 Correct 4 ms 1144 KB Output is correct
94 Correct 3 ms 888 KB Output is correct
95 Correct 3 ms 760 KB Output is correct
96 Correct 3 ms 632 KB Output is correct
97 Correct 3 ms 376 KB Output is correct
98 Correct 2 ms 376 KB Output is correct
99 Correct 4 ms 1784 KB Output is correct
100 Correct 5 ms 1784 KB Output is correct
101 Correct 43 ms 13792 KB Output is correct
102 Correct 18 ms 3576 KB Output is correct
103 Correct 678 ms 148040 KB Output is correct
104 Correct 562 ms 147832 KB Output is correct
105 Correct 500 ms 84864 KB Output is correct
106 Correct 572 ms 146804 KB Output is correct
107 Correct 184 ms 18808 KB Output is correct
108 Correct 250 ms 34680 KB Output is correct
109 Correct 37 ms 3576 KB Output is correct
110 Correct 36 ms 3576 KB Output is correct
111 Correct 530 ms 130908 KB Output is correct
112 Correct 538 ms 114740 KB Output is correct
113 Correct 191 ms 20472 KB Output is correct
114 Correct 538 ms 146808 KB Output is correct
115 Correct 594 ms 146880 KB Output is correct