oj.uz

Submission #724243

# Submission time Handle Problem Language Result Execution time Memory
724243 2023-04-14T23:43:55 Z badont Arranging Shoes (IOI19_shoes) C++17
100 / 100
 75 ms 17176 KB 
#include "shoes.h"
#include <cmath>
#include <cstdlib> 
#include <cassert>

using ll = long long;
using namespace std;

template<typename T>
struct fen {
	vector<T> tr;
	ll mxn;

	fen(ll sz) {
		mxn = sz;
		tr.assign(sz + 5, 0);
	}

	void upd(ll g, T k) {
    g++;
		for (; g <= mxn; g += g&-g)
			tr[g] += k;
	}

	T ge(ll g) {
    g++;
		T res = 0;
		for (; g; g -= g&-g)
			res += tr[g];
		return res;
	}

	T rng(ll l, ll r) { if (l > r) return 0; return ge(r) - ge(l - 1); }
};

long long count_swaps(std::vector<int> s) {
	ll n = (ll)s.size();
	n /= 2;
	vector<vector<ll>> pos(n, vector<ll>()), neg(n, vector<ll>());	

	for (int i = 0; i < 2 * n; i++) {
		ll x = abs(s[i]);
		if (s[i] < 0) {
			neg[x - 1].push_back(i);
		} else {
			pos[x - 1].push_back(i);
		}
	}

	ll op_1 = 0, op_2 = 0;
	vector<ll> match(2 * n);
	for (int i = 0; i < n; i++) {
		assert(neg[i].size() == pos[i].size());
		for (int j = 0; j < (int)neg[i].size(); j++) {
			ll x = neg[i][j], y = pos[i][j];
      match[x] = y;
      match[y] = x;
			if (x > y) op_2++;
		}
	}

  fen<ll> tree(2 * n);
  for (int i = 0; i < 2 * n; i++)
    tree.upd(i, 1);

  for (int i = 0; i < 2 * n; i++) if (match[i] > i) {
    op_1 += tree.rng(i + 1, match[i]) - 1;
    tree.upd(match[i], -1);
  }
 
   return op_1 + op_2;

}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 284 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 288 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 284 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 284 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 288 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 1 ms 292 KB Output is correct
26 Correct 1 ms 288 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 0 ms 288 KB Output is correct
29 Correct 0 ms 224 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 1 ms 284 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 0 ms 288 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 1 ms 340 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 3 ms 1520 KB Output is correct
21 Correct 4 ms 1504 KB Output is correct
22 Correct 33 ms 11324 KB Output is correct
23 Correct 31 ms 11424 KB Output is correct
24 Correct 32 ms 11344 KB Output is correct
25 Correct 29 ms 11336 KB Output is correct
26 Correct 33 ms 11432 KB Output is correct
27 Correct 29 ms 11444 KB Output is correct
28 Correct 31 ms 11296 KB Output is correct
29 Correct 34 ms 11380 KB Output is correct
30 Correct 30 ms 11328 KB Output is correct
31 Correct 36 ms 11384 KB Output is correct
32 Correct 33 ms 11328 KB Output is correct
33 Correct 30 ms 11308 KB Output is correct
34 Correct 34 ms 11300 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 30 ms 11360 KB Output is correct
38 Correct 29 ms 11336 KB Output is correct
39 Correct 31 ms 11360 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 58 ms 15908 KB Output is correct
6 Correct 38 ms 12244 KB Output is correct
7 Correct 57 ms 15912 KB Output is correct
8 Correct 32 ms 11892 KB Output is correct
9 Correct 56 ms 15904 KB Output is correct
10 Correct 48 ms 13260 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 284 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 288 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 284 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 284 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 288 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 1 ms 292 KB Output is correct
26 Correct 1 ms 288 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 0 ms 288 KB Output is correct
29 Correct 0 ms 224 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 1 ms 284 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 0 ms 288 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 212 KB Output is correct
38 Correct 1 ms 288 KB Output is correct
39 Correct 1 ms 288 KB Output is correct
40 Correct 1 ms 212 KB Output is correct
41 Correct 1 ms 340 KB Output is correct
42 Correct 1 ms 340 KB Output is correct
43 Correct 1 ms 340 KB Output is correct
44 Correct 1 ms 420 KB Output is correct
45 Correct 1 ms 424 KB Output is correct
46 Correct 1 ms 340 KB Output is correct
47 Correct 1 ms 340 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 1 ms 340 KB Output is correct
50 Correct 1 ms 340 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 340 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 284 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 288 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 284 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 284 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 288 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 1 ms 292 KB Output is correct
26 Correct 1 ms 288 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 0 ms 288 KB Output is correct
29 Correct 0 ms 224 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 1 ms 284 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 0 ms 288 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 0 ms 212 KB Output is correct
42 Correct 1 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 0 ms 212 KB Output is correct
45 Correct 0 ms 212 KB Output is correct
46 Correct 1 ms 212 KB Output is correct
47 Correct 0 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 0 ms 212 KB Output is correct
50 Correct 0 ms 212 KB Output is correct
51 Correct 0 ms 212 KB Output is correct
52 Correct 1 ms 340 KB Output is correct
53 Correct 1 ms 340 KB Output is correct
54 Correct 3 ms 1520 KB Output is correct
55 Correct 4 ms 1504 KB Output is correct
56 Correct 33 ms 11324 KB Output is correct
57 Correct 31 ms 11424 KB Output is correct
58 Correct 32 ms 11344 KB Output is correct
59 Correct 29 ms 11336 KB Output is correct
60 Correct 33 ms 11432 KB Output is correct
61 Correct 29 ms 11444 KB Output is correct
62 Correct 31 ms 11296 KB Output is correct
63 Correct 34 ms 11380 KB Output is correct
64 Correct 30 ms 11328 KB Output is correct
65 Correct 36 ms 11384 KB Output is correct
66 Correct 33 ms 11328 KB Output is correct
67 Correct 30 ms 11308 KB Output is correct
68 Correct 34 ms 11300 KB Output is correct
69 Correct 0 ms 212 KB Output is correct
70 Correct 0 ms 212 KB Output is correct
71 Correct 30 ms 11360 KB Output is correct
72 Correct 29 ms 11336 KB Output is correct
73 Correct 31 ms 11360 KB Output is correct
74 Correct 0 ms 212 KB Output is correct
75 Correct 0 ms 212 KB Output is correct
76 Correct 0 ms 212 KB Output is correct
77 Correct 0 ms 212 KB Output is correct
78 Correct 58 ms 15908 KB Output is correct
79 Correct 38 ms 12244 KB Output is correct
80 Correct 57 ms 15912 KB Output is correct
81 Correct 32 ms 11892 KB Output is correct
82 Correct 56 ms 15904 KB Output is correct
83 Correct 48 ms 13260 KB Output is correct
84 Correct 1 ms 212 KB Output is correct
85 Correct 1 ms 288 KB Output is correct
86 Correct 1 ms 288 KB Output is correct
87 Correct 1 ms 212 KB Output is correct
88 Correct 1 ms 340 KB Output is correct
89 Correct 1 ms 340 KB Output is correct
90 Correct 1 ms 340 KB Output is correct
91 Correct 1 ms 420 KB Output is correct
92 Correct 1 ms 424 KB Output is correct
93 Correct 1 ms 340 KB Output is correct
94 Correct 1 ms 340 KB Output is correct
95 Correct 1 ms 340 KB Output is correct
96 Correct 1 ms 340 KB Output is correct
97 Correct 1 ms 340 KB Output is correct
98 Correct 1 ms 340 KB Output is correct
99 Correct 1 ms 340 KB Output is correct
100 Correct 1 ms 340 KB Output is correct
101 Correct 5 ms 1876 KB Output is correct
102 Correct 6 ms 1620 KB Output is correct
103 Correct 65 ms 17080 KB Output is correct
104 Correct 75 ms 17168 KB Output is correct
105 Correct 61 ms 14764 KB Output is correct
106 Correct 66 ms 17176 KB Output is correct
107 Correct 45 ms 13604 KB Output is correct
108 Correct 53 ms 13852 KB Output is correct
109 Correct 31 ms 13332 KB Output is correct
110 Correct 31 ms 12564 KB Output is correct
111 Correct 56 ms 16460 KB Output is correct
112 Correct 69 ms 15744 KB Output is correct
113 Correct 42 ms 13484 KB Output is correct
114 Correct 58 ms 17116 KB Output is correct
115 Correct 59 ms 17164 KB Output is correct