oj.uz

Submission #143939

# Submission time Handle Problem Language Result Execution time Memory
143939 2019-08-15T13:17:41 Z tincamatei Arranging Shoes (IOI19_shoes) C++14
100 / 100
 111 ms 14844 KB 
#include "shoes.h"
#include <vector>
#include <cstdlib>
#include <cstdio>

using namespace std;

vector<int> aib;

static inline int lsb(int x) {
	return x & (-x);
}

void update(int poz, int val) {
	while(poz <= aib.size()) {
		aib[poz] += val;
		poz += lsb(poz);
	}
}

int query(int poz) {
	int rez = 0;
	while(poz > 0) {
		rez += aib[poz];
		poz -= lsb(poz);
	}
	return rez;
}

long long sweep(const vector<int> &x) {
	int N = x.size() / 2;
	long long rez = 0LL;
	vector<int> last(1 + N, -1);
	for(int i = 0; i < 2 * N; ++i) {
		if(last[abs(x[i])] == -1)
			last[abs(x[i])] = i + 1;
		else {
			rez = rez + query(i) - query(last[abs(x[i])]);
			update(i + 1, 1);
			update(last[abs(x[i])], 1);

			if(x[i] < 0)
				++rez;
		}
	}

	return rez;
}

long long count_swaps(std::vector<int> s) {
	int N = s.size() / 2;
	vector<vector<int> > pozLeft(N), pozRight(N);
	vector<int> norm(2 * N);
	for(int i = 0; i < 2 * N; ++i)
		if(s[i] < 0)
			pozLeft[-s[i] - 1].push_back(i);
		else
			pozRight[s[i] - 1].push_back(i);
	
	int id = 0;
	for(int i = 0; i < N; ++i) {
		for(int j = 0; j < pozLeft[i].size(); ++j) {
			++id;
			norm[pozLeft[i][j]] = -id;
			norm[pozRight[i][j]] = id;
		}
	}

	aib.clear();
	aib.resize(1 + 2 * N, 0);

	return sweep(norm);
}

Compilation message

shoes.cpp: In function 'void update(int, int)':
shoes.cpp:15:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  while(poz <= aib.size()) {
        ~~~~^~~~~~~~~~~~~
shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:62:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j = 0; j < pozLeft[i].size(); ++j) {
                  ~~^~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 348 KB Output is correct
2 Correct 2 ms 252 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 348 KB Output is correct
2 Correct 2 ms 252 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 256 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 256 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 256 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 256 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 256 KB Output is correct
21 Correct 2 ms 256 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 252 KB Output is correct
25 Correct 2 ms 380 KB Output is correct
26 Correct 2 ms 256 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 256 KB Output is correct
29 Correct 2 ms 256 KB Output is correct
30 Correct 2 ms 256 KB Output is correct
31 Correct 2 ms 376 KB Output is correct
32 Correct 2 ms 252 KB Output is correct
33 Correct 2 ms 256 KB Output is correct
34 Correct 2 ms 256 KB Output is correct
35 Correct 2 ms 256 KB Output is correct
36 Correct 2 ms 256 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 348 KB Output is correct
2 Correct 2 ms 252 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 252 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 1 ms 252 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 504 KB Output is correct
13 Correct 2 ms 256 KB Output is correct
14 Correct 2 ms 252 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 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 6 ms 1272 KB Output is correct
21 Correct 6 ms 1144 KB Output is correct
22 Correct 47 ms 9368 KB Output is correct
23 Correct 42 ms 9580 KB Output is correct
24 Correct 47 ms 9452 KB Output is correct
25 Correct 43 ms 9460 KB Output is correct
26 Correct 47 ms 9580 KB Output is correct
27 Correct 40 ms 9580 KB Output is correct
28 Correct 44 ms 9452 KB Output is correct
29 Correct 44 ms 9452 KB Output is correct
30 Correct 45 ms 9500 KB Output is correct
31 Correct 47 ms 9472 KB Output is correct
32 Correct 45 ms 9484 KB Output is correct
33 Correct 43 ms 9496 KB Output is correct
34 Correct 44 ms 9456 KB Output is correct
35 Correct 2 ms 256 KB Output is correct
36 Correct 2 ms 256 KB Output is correct
37 Correct 45 ms 9452 KB Output is correct
38 Correct 45 ms 9620 KB Output is correct
39 Correct 48 ms 9456 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 252 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 99 ms 14712 KB Output is correct
6 Correct 60 ms 9976 KB Output is correct
7 Correct 97 ms 14832 KB Output is correct
8 Correct 47 ms 9476 KB Output is correct
9 Correct 95 ms 14728 KB Output is correct
10 Correct 79 ms 11640 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 348 KB Output is correct
2 Correct 2 ms 252 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 256 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 256 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 256 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 256 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 256 KB Output is correct
21 Correct 2 ms 256 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 252 KB Output is correct
25 Correct 2 ms 380 KB Output is correct
26 Correct 2 ms 256 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 256 KB Output is correct
29 Correct 2 ms 256 KB Output is correct
30 Correct 2 ms 256 KB Output is correct
31 Correct 2 ms 376 KB Output is correct
32 Correct 2 ms 252 KB Output is correct
33 Correct 2 ms 256 KB Output is correct
34 Correct 2 ms 256 KB Output is correct
35 Correct 2 ms 256 KB Output is correct
36 Correct 2 ms 256 KB Output is correct
37 Correct 2 ms 376 KB Output is correct
38 Correct 2 ms 252 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 504 KB Output is correct
43 Correct 2 ms 380 KB Output is correct
44 Correct 2 ms 376 KB Output is correct
45 Correct 2 ms 376 KB Output is correct
46 Correct 3 ms 376 KB Output is correct
47 Correct 3 ms 380 KB Output is correct
48 Correct 2 ms 376 KB Output is correct
49 Correct 2 ms 380 KB Output is correct
50 Correct 2 ms 376 KB Output is correct
51 Correct 2 ms 376 KB Output is correct
52 Correct 2 ms 376 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 348 KB Output is correct
2 Correct 2 ms 252 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 256 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 256 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 1 ms 348 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 256 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 256 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 256 KB Output is correct
21 Correct 2 ms 256 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 252 KB Output is correct
25 Correct 2 ms 380 KB Output is correct
26 Correct 2 ms 256 KB Output is correct
27 Correct 2 ms 376 KB Output is correct
28 Correct 2 ms 256 KB Output is correct
29 Correct 2 ms 256 KB Output is correct
30 Correct 2 ms 256 KB Output is correct
31 Correct 2 ms 376 KB Output is correct
32 Correct 2 ms 252 KB Output is correct
33 Correct 2 ms 256 KB Output is correct
34 Correct 2 ms 256 KB Output is correct
35 Correct 2 ms 256 KB Output is correct
36 Correct 2 ms 256 KB Output is correct
37 Correct 2 ms 376 KB Output is correct
38 Correct 2 ms 256 KB Output is correct
39 Correct 2 ms 256 KB Output is correct
40 Correct 2 ms 256 KB Output is correct
41 Correct 2 ms 252 KB Output is correct
42 Correct 2 ms 256 KB Output is correct
43 Correct 1 ms 252 KB Output is correct
44 Correct 2 ms 256 KB Output is correct
45 Correct 2 ms 256 KB Output is correct
46 Correct 2 ms 504 KB Output is correct
47 Correct 2 ms 256 KB Output is correct
48 Correct 2 ms 252 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 376 KB Output is correct
52 Correct 2 ms 376 KB Output is correct
53 Correct 2 ms 376 KB Output is correct
54 Correct 6 ms 1272 KB Output is correct
55 Correct 6 ms 1144 KB Output is correct
56 Correct 47 ms 9368 KB Output is correct
57 Correct 42 ms 9580 KB Output is correct
58 Correct 47 ms 9452 KB Output is correct
59 Correct 43 ms 9460 KB Output is correct
60 Correct 47 ms 9580 KB Output is correct
61 Correct 40 ms 9580 KB Output is correct
62 Correct 44 ms 9452 KB Output is correct
63 Correct 44 ms 9452 KB Output is correct
64 Correct 45 ms 9500 KB Output is correct
65 Correct 47 ms 9472 KB Output is correct
66 Correct 45 ms 9484 KB Output is correct
67 Correct 43 ms 9496 KB Output is correct
68 Correct 44 ms 9456 KB Output is correct
69 Correct 2 ms 256 KB Output is correct
70 Correct 2 ms 256 KB Output is correct
71 Correct 45 ms 9452 KB Output is correct
72 Correct 45 ms 9620 KB Output is correct
73 Correct 48 ms 9456 KB Output is correct
74 Correct 2 ms 256 KB Output is correct
75 Correct 2 ms 252 KB Output is correct
76 Correct 2 ms 376 KB Output is correct
77 Correct 2 ms 256 KB Output is correct
78 Correct 99 ms 14712 KB Output is correct
79 Correct 60 ms 9976 KB Output is correct
80 Correct 97 ms 14832 KB Output is correct
81 Correct 47 ms 9476 KB Output is correct
82 Correct 95 ms 14728 KB Output is correct
83 Correct 79 ms 11640 KB Output is correct
84 Correct 2 ms 376 KB Output is correct
85 Correct 2 ms 252 KB Output is correct
86 Correct 2 ms 376 KB Output is correct
87 Correct 2 ms 376 KB Output is correct
88 Correct 2 ms 376 KB Output is correct
89 Correct 2 ms 504 KB Output is correct
90 Correct 2 ms 380 KB Output is correct
91 Correct 2 ms 376 KB Output is correct
92 Correct 2 ms 376 KB Output is correct
93 Correct 3 ms 376 KB Output is correct
94 Correct 3 ms 380 KB Output is correct
95 Correct 2 ms 376 KB Output is correct
96 Correct 2 ms 380 KB Output is correct
97 Correct 2 ms 376 KB Output is correct
98 Correct 2 ms 376 KB Output is correct
99 Correct 2 ms 376 KB Output is correct
100 Correct 2 ms 376 KB Output is correct
101 Correct 9 ms 1656 KB Output is correct
102 Correct 8 ms 1400 KB Output is correct
103 Correct 108 ms 14840 KB Output is correct
104 Correct 102 ms 14844 KB Output is correct
105 Correct 96 ms 12136 KB Output is correct
106 Correct 101 ms 14840 KB Output is correct
107 Correct 66 ms 10104 KB Output is correct
108 Correct 68 ms 10488 KB Output is correct
109 Correct 45 ms 9712 KB Output is correct
110 Correct 44 ms 9452 KB Output is correct
111 Correct 97 ms 14072 KB Output is correct
112 Correct 111 ms 13416 KB Output is correct
113 Correct 67 ms 10104 KB Output is correct
114 Correct 96 ms 14836 KB Output is correct
115 Correct 102 ms 14832 KB Output is correct