oj.uz

Submission #245634

# Submission time Handle Problem Language Result Execution time Memory
245634 2020-07-07T01:56:36 Z xyzyzl Arranging Shoes (IOI19_shoes) C++14
100 / 100
 113 ms 16880 KB 
#include <bits/stdc++.h>

using namespace std;

const int MAXN = 100005;

typedef pair<int, int> pii;
#define F first
#define S second

#define bitinc(x) (x&-x)

bool comp(pii x, pii y)
{
	int p = min(x.F, x.S);
	int q = min(y.F, y.S);
	return p < q;
}

int n;
long long bit[2*MAXN];
vector<int> inds[MAXN][2];
vector<pii> ind;

long long sum(int ind)
{
	++ind;
	int sm = 0;
	while(ind > 0)
	{
		sm += bit[ind];
		ind -= bitinc(ind);
	}
	return sm;
}
void upd(int ind, int val)
{
	++ind;
	while(ind <= n)
	{
		bit[ind] += val;
		ind += bitinc(ind);
	}
}

long long count_swaps(vector<int> s) {
	for(int i = 0; i < 2*MAXN; i++) bit[i] = 0;
	n = s.size();
	for(int i = 0; i < n; i++)
	{
		if(s[i] < 0)
		{
			inds[-s[i]][0].push_back(i);
		} else 
		{
			inds[s[i]][1].push_back(i);
		}
	}
	for(int i = 1; i <= n/2; i++)
	{
		for(int j = 0; j < inds[i][0].size(); j++)
		{
			ind.push_back({inds[i][0][j], inds[i][1][j]});
		}
	}
	sort(ind.begin(), ind.end(), comp);
	for(int i = 0; i < n; i++) upd(i, 1);
	long long ret = 0;
	for(int i = 0; i < ind.size(); i++)
	{
		upd(ind[i].F, -1);
		upd(ind[i].S, -1);
		int x = ind[i].F, y = ind[i].S;
		if(ind[i].F > ind[i].S)
		{
			++ret;
			swap(x,y);
		}
		ret += sum(y) - sum(x-1);
	}
	return ret;
}

Compilation message

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:61:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int j = 0; j < inds[i][0].size(); j++)
                  ~~^~~~~~~~~~~~~~~~~~~
shoes.cpp:69:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0; i < ind.size(); i++)
                 ~~^~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 6656 KB Output is correct
2 Correct 8 ms 6656 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 6656 KB Output is correct
2 Correct 8 ms 6656 KB Output is correct
3 Correct 8 ms 6528 KB Output is correct
4 Correct 8 ms 6656 KB Output is correct
5 Correct 9 ms 6528 KB Output is correct
6 Correct 9 ms 6708 KB Output is correct
7 Correct 10 ms 6528 KB Output is correct
8 Correct 9 ms 6528 KB Output is correct
9 Correct 9 ms 6528 KB Output is correct
10 Correct 8 ms 6528 KB Output is correct
11 Correct 8 ms 6528 KB Output is correct
12 Correct 9 ms 6656 KB Output is correct
13 Correct 8 ms 6528 KB Output is correct
14 Correct 9 ms 6656 KB Output is correct
15 Correct 9 ms 6528 KB Output is correct
16 Correct 8 ms 6528 KB Output is correct
17 Correct 8 ms 6528 KB Output is correct
18 Correct 8 ms 6528 KB Output is correct
19 Correct 8 ms 6656 KB Output is correct
20 Correct 8 ms 6528 KB Output is correct
21 Correct 11 ms 6528 KB Output is correct
22 Correct 10 ms 6656 KB Output is correct
23 Correct 8 ms 6528 KB Output is correct
24 Correct 10 ms 6632 KB Output is correct
25 Correct 10 ms 6656 KB Output is correct
26 Correct 8 ms 6528 KB Output is correct
27 Correct 8 ms 6528 KB Output is correct
28 Correct 8 ms 6528 KB Output is correct
29 Correct 8 ms 6528 KB Output is correct
30 Correct 9 ms 6656 KB Output is correct
31 Correct 8 ms 6528 KB Output is correct
32 Correct 9 ms 6656 KB Output is correct
33 Correct 8 ms 6528 KB Output is correct
34 Correct 8 ms 6528 KB Output is correct
35 Correct 8 ms 6528 KB Output is correct
36 Correct 8 ms 6656 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 6656 KB Output is correct
2 Correct 8 ms 6656 KB Output is correct
3 Correct 8 ms 6528 KB Output is correct
4 Correct 8 ms 6656 KB Output is correct
5 Correct 8 ms 6528 KB Output is correct
6 Correct 8 ms 6528 KB Output is correct
7 Correct 8 ms 6528 KB Output is correct
8 Correct 8 ms 6656 KB Output is correct
9 Correct 8 ms 6528 KB Output is correct
10 Correct 8 ms 6528 KB Output is correct
11 Correct 8 ms 6528 KB Output is correct
12 Correct 8 ms 6528 KB Output is correct
13 Correct 8 ms 6528 KB Output is correct
14 Correct 8 ms 6528 KB Output is correct
15 Correct 8 ms 6656 KB Output is correct
16 Correct 8 ms 6528 KB Output is correct
17 Correct 9 ms 6528 KB Output is correct
18 Correct 9 ms 6784 KB Output is correct
19 Correct 9 ms 6656 KB Output is correct
20 Correct 13 ms 7168 KB Output is correct
21 Correct 13 ms 7168 KB Output is correct
22 Correct 58 ms 11416 KB Output is correct
23 Correct 54 ms 11376 KB Output is correct
24 Correct 56 ms 11376 KB Output is correct
25 Correct 55 ms 11120 KB Output is correct
26 Correct 59 ms 11372 KB Output is correct
27 Correct 54 ms 11116 KB Output is correct
28 Correct 56 ms 11376 KB Output is correct
29 Correct 56 ms 11380 KB Output is correct
30 Correct 56 ms 11376 KB Output is correct
31 Correct 56 ms 11396 KB Output is correct
32 Correct 54 ms 11376 KB Output is correct
33 Correct 54 ms 11248 KB Output is correct
34 Correct 54 ms 11376 KB Output is correct
35 Correct 8 ms 6528 KB Output is correct
36 Correct 8 ms 6528 KB Output is correct
37 Correct 56 ms 11376 KB Output is correct
38 Correct 55 ms 11376 KB Output is correct
39 Correct 54 ms 11376 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 6528 KB Output is correct
2 Correct 8 ms 6528 KB Output is correct
3 Correct 8 ms 6528 KB Output is correct
4 Correct 8 ms 6656 KB Output is correct
5 Correct 99 ms 16880 KB Output is correct
6 Correct 76 ms 12016 KB Output is correct
7 Correct 109 ms 16880 KB Output is correct
8 Correct 62 ms 11456 KB Output is correct
9 Correct 113 ms 16880 KB Output is correct
10 Correct 112 ms 13680 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 6656 KB Output is correct
2 Correct 8 ms 6656 KB Output is correct
3 Correct 8 ms 6528 KB Output is correct
4 Correct 8 ms 6656 KB Output is correct
5 Correct 9 ms 6528 KB Output is correct
6 Correct 9 ms 6708 KB Output is correct
7 Correct 10 ms 6528 KB Output is correct
8 Correct 9 ms 6528 KB Output is correct
9 Correct 9 ms 6528 KB Output is correct
10 Correct 8 ms 6528 KB Output is correct
11 Correct 8 ms 6528 KB Output is correct
12 Correct 9 ms 6656 KB Output is correct
13 Correct 8 ms 6528 KB Output is correct
14 Correct 9 ms 6656 KB Output is correct
15 Correct 9 ms 6528 KB Output is correct
16 Correct 8 ms 6528 KB Output is correct
17 Correct 8 ms 6528 KB Output is correct
18 Correct 8 ms 6528 KB Output is correct
19 Correct 8 ms 6656 KB Output is correct
20 Correct 8 ms 6528 KB Output is correct
21 Correct 11 ms 6528 KB Output is correct
22 Correct 10 ms 6656 KB Output is correct
23 Correct 8 ms 6528 KB Output is correct
24 Correct 10 ms 6632 KB Output is correct
25 Correct 10 ms 6656 KB Output is correct
26 Correct 8 ms 6528 KB Output is correct
27 Correct 8 ms 6528 KB Output is correct
28 Correct 8 ms 6528 KB Output is correct
29 Correct 8 ms 6528 KB Output is correct
30 Correct 9 ms 6656 KB Output is correct
31 Correct 8 ms 6528 KB Output is correct
32 Correct 9 ms 6656 KB Output is correct
33 Correct 8 ms 6528 KB Output is correct
34 Correct 8 ms 6528 KB Output is correct
35 Correct 8 ms 6528 KB Output is correct
36 Correct 8 ms 6656 KB Output is correct
37 Correct 9 ms 6528 KB Output is correct
38 Correct 8 ms 6528 KB Output is correct
39 Correct 9 ms 6528 KB Output is correct
40 Correct 9 ms 6656 KB Output is correct
41 Correct 9 ms 6656 KB Output is correct
42 Correct 9 ms 6656 KB Output is correct
43 Correct 9 ms 6656 KB Output is correct
44 Correct 9 ms 6656 KB Output is correct
45 Correct 9 ms 6656 KB Output is correct
46 Correct 8 ms 6656 KB Output is correct
47 Correct 8 ms 6656 KB Output is correct
48 Correct 9 ms 6656 KB Output is correct
49 Correct 9 ms 6656 KB Output is correct
50 Correct 9 ms 6656 KB Output is correct
51 Correct 9 ms 6656 KB Output is correct
52 Correct 10 ms 6656 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 6656 KB Output is correct
2 Correct 8 ms 6656 KB Output is correct
3 Correct 8 ms 6528 KB Output is correct
4 Correct 8 ms 6656 KB Output is correct
5 Correct 9 ms 6528 KB Output is correct
6 Correct 9 ms 6708 KB Output is correct
7 Correct 10 ms 6528 KB Output is correct
8 Correct 9 ms 6528 KB Output is correct
9 Correct 9 ms 6528 KB Output is correct
10 Correct 8 ms 6528 KB Output is correct
11 Correct 8 ms 6528 KB Output is correct
12 Correct 9 ms 6656 KB Output is correct
13 Correct 8 ms 6528 KB Output is correct
14 Correct 9 ms 6656 KB Output is correct
15 Correct 9 ms 6528 KB Output is correct
16 Correct 8 ms 6528 KB Output is correct
17 Correct 8 ms 6528 KB Output is correct
18 Correct 8 ms 6528 KB Output is correct
19 Correct 8 ms 6656 KB Output is correct
20 Correct 8 ms 6528 KB Output is correct
21 Correct 11 ms 6528 KB Output is correct
22 Correct 10 ms 6656 KB Output is correct
23 Correct 8 ms 6528 KB Output is correct
24 Correct 10 ms 6632 KB Output is correct
25 Correct 10 ms 6656 KB Output is correct
26 Correct 8 ms 6528 KB Output is correct
27 Correct 8 ms 6528 KB Output is correct
28 Correct 8 ms 6528 KB Output is correct
29 Correct 8 ms 6528 KB Output is correct
30 Correct 9 ms 6656 KB Output is correct
31 Correct 8 ms 6528 KB Output is correct
32 Correct 9 ms 6656 KB Output is correct
33 Correct 8 ms 6528 KB Output is correct
34 Correct 8 ms 6528 KB Output is correct
35 Correct 8 ms 6528 KB Output is correct
36 Correct 8 ms 6656 KB Output is correct
37 Correct 8 ms 6528 KB Output is correct
38 Correct 8 ms 6656 KB Output is correct
39 Correct 8 ms 6528 KB Output is correct
40 Correct 8 ms 6528 KB Output is correct
41 Correct 8 ms 6528 KB Output is correct
42 Correct 8 ms 6656 KB Output is correct
43 Correct 8 ms 6528 KB Output is correct
44 Correct 8 ms 6528 KB Output is correct
45 Correct 8 ms 6528 KB Output is correct
46 Correct 8 ms 6528 KB Output is correct
47 Correct 8 ms 6528 KB Output is correct
48 Correct 8 ms 6528 KB Output is correct
49 Correct 8 ms 6656 KB Output is correct
50 Correct 8 ms 6528 KB Output is correct
51 Correct 9 ms 6528 KB Output is correct
52 Correct 9 ms 6784 KB Output is correct
53 Correct 9 ms 6656 KB Output is correct
54 Correct 13 ms 7168 KB Output is correct
55 Correct 13 ms 7168 KB Output is correct
56 Correct 58 ms 11416 KB Output is correct
57 Correct 54 ms 11376 KB Output is correct
58 Correct 56 ms 11376 KB Output is correct
59 Correct 55 ms 11120 KB Output is correct
60 Correct 59 ms 11372 KB Output is correct
61 Correct 54 ms 11116 KB Output is correct
62 Correct 56 ms 11376 KB Output is correct
63 Correct 56 ms 11380 KB Output is correct
64 Correct 56 ms 11376 KB Output is correct
65 Correct 56 ms 11396 KB Output is correct
66 Correct 54 ms 11376 KB Output is correct
67 Correct 54 ms 11248 KB Output is correct
68 Correct 54 ms 11376 KB Output is correct
69 Correct 8 ms 6528 KB Output is correct
70 Correct 8 ms 6528 KB Output is correct
71 Correct 56 ms 11376 KB Output is correct
72 Correct 55 ms 11376 KB Output is correct
73 Correct 54 ms 11376 KB Output is correct
74 Correct 8 ms 6528 KB Output is correct
75 Correct 8 ms 6528 KB Output is correct
76 Correct 8 ms 6528 KB Output is correct
77 Correct 8 ms 6656 KB Output is correct
78 Correct 99 ms 16880 KB Output is correct
79 Correct 76 ms 12016 KB Output is correct
80 Correct 109 ms 16880 KB Output is correct
81 Correct 62 ms 11456 KB Output is correct
82 Correct 113 ms 16880 KB Output is correct
83 Correct 112 ms 13680 KB Output is correct
84 Correct 9 ms 6528 KB Output is correct
85 Correct 8 ms 6528 KB Output is correct
86 Correct 9 ms 6528 KB Output is correct
87 Correct 9 ms 6656 KB Output is correct
88 Correct 9 ms 6656 KB Output is correct
89 Correct 9 ms 6656 KB Output is correct
90 Correct 9 ms 6656 KB Output is correct
91 Correct 9 ms 6656 KB Output is correct
92 Correct 9 ms 6656 KB Output is correct
93 Correct 8 ms 6656 KB Output is correct
94 Correct 8 ms 6656 KB Output is correct
95 Correct 9 ms 6656 KB Output is correct
96 Correct 9 ms 6656 KB Output is correct
97 Correct 9 ms 6656 KB Output is correct
98 Correct 9 ms 6656 KB Output is correct
99 Correct 10 ms 6656 KB Output is correct
100 Correct 11 ms 6656 KB Output is correct
101 Correct 15 ms 7680 KB Output is correct
102 Correct 16 ms 7296 KB Output is correct
103 Correct 103 ms 16752 KB Output is correct
104 Correct 93 ms 16756 KB Output is correct
105 Correct 101 ms 14192 KB Output is correct
106 Correct 109 ms 16880 KB Output is correct
107 Correct 80 ms 12144 KB Output is correct
108 Correct 84 ms 12532 KB Output is correct
109 Correct 66 ms 11760 KB Output is correct
110 Correct 55 ms 11376 KB Output is correct
111 Correct 96 ms 16112 KB Output is correct
112 Correct 102 ms 15348 KB Output is correct
113 Correct 88 ms 12116 KB Output is correct
114 Correct 111 ms 16752 KB Output is correct
115 Correct 97 ms 16752 KB Output is correct