oj.uz

Submission #401758

# Submission time Handle Problem Language Result Execution time Memory
401758 2021-05-10T19:11:23 Z nikatamliani Arranging Shoes (IOI19_shoes) C++14
100 / 100
 266 ms 274392 KB 
#include "shoes.h"
#include <iostream>
#include <vector>
#include <queue>
using namespace std;
long long count_swaps(vector<int> A) {
	int n = (int)A.size();
	vector<queue<int>> positives(n+1);
	vector<queue<int>> negatives(n+1);
	vector<int> partner(n);
	for(int i = 0; i < n; ++i) {
		auto &positions = A[i] < 0 ? positives[-A[i]] : negatives[A[i]];
		if(positions.empty()) {
			if(A[i] > 0) {
				positives[A[i]].push(i);
			} else {
				negatives[-A[i]].push(i);
			}
		} else {
			partner[i] = positions.front();
			partner[positions.front()] = i;
			positions.pop();
 		}
	}
	vector<int> fenwick(n+1);
	auto sum = [&](int id) -> int {
		int answer = 0;
		for(++id; id > 0; id -= id & -id) {
			answer += fenwick[id];
		}
		return answer;
	};
	auto update = [&](int id, int v) {
		for(; id <= n; id += id & -id) {
			fenwick[id] += v;
		}
	};
	auto add = [&](int l, int r, int v) {
		++l, ++r;
		update(l, v);
		update(r+1, -v);
	};
	vector<bool> processed(n, false);
	long long answer = 0;
	for(int i = 0; i < n; ++i) {
		if(!processed[i]) {
			int j = partner[i];
			processed[i] = processed[j] = true;
			int real_i = sum(i) + i;
			int real_j = sum(j) + j;
			answer += real_j - real_i - (A[j] > 0);
			add(i, j, 1);
		}
	}
	return answer;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 288 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 288 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 292 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 292 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 1 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 1 ms 292 KB Output is correct
32 Correct 1 ms 292 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 1 ms 204 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 588 KB Output is correct
17 Correct 2 ms 1100 KB Output is correct
18 Correct 3 ms 3020 KB Output is correct
19 Correct 3 ms 3036 KB Output is correct
20 Correct 22 ms 27596 KB Output is correct
21 Correct 27 ms 27532 KB Output is correct
22 Correct 243 ms 273964 KB Output is correct
23 Correct 230 ms 274004 KB Output is correct
24 Correct 217 ms 273956 KB Output is correct
25 Correct 219 ms 274132 KB Output is correct
26 Correct 225 ms 273964 KB Output is correct
27 Correct 212 ms 273860 KB Output is correct
28 Correct 222 ms 274284 KB Output is correct
29 Correct 232 ms 274312 KB Output is correct
30 Correct 218 ms 274332 KB Output is correct
31 Correct 234 ms 273960 KB Output is correct
32 Correct 222 ms 274352 KB Output is correct
33 Correct 218 ms 274112 KB Output is correct
34 Correct 223 ms 274344 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 1 ms 204 KB Output is correct
37 Correct 224 ms 274364 KB Output is correct
38 Correct 218 ms 274276 KB Output is correct
39 Correct 220 ms 274388 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 288 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 259 ms 273860 KB Output is correct
6 Correct 227 ms 273916 KB Output is correct
7 Correct 245 ms 273948 KB Output is correct
8 Correct 235 ms 274372 KB Output is correct
9 Correct 245 ms 273860 KB Output is correct
10 Correct 244 ms 273964 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 288 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 288 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 292 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 292 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 1 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 1 ms 292 KB Output is correct
32 Correct 1 ms 292 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 1 ms 204 KB Output is correct
37 Correct 1 ms 204 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 588 KB Output is correct
40 Correct 1 ms 1100 KB Output is correct
41 Correct 3 ms 3020 KB Output is correct
42 Correct 3 ms 3020 KB Output is correct
43 Correct 3 ms 3020 KB Output is correct
44 Correct 3 ms 3020 KB Output is correct
45 Correct 3 ms 3020 KB Output is correct
46 Correct 3 ms 2992 KB Output is correct
47 Correct 3 ms 3020 KB Output is correct
48 Correct 3 ms 2988 KB Output is correct
49 Correct 3 ms 3020 KB Output is correct
50 Correct 3 ms 3020 KB Output is correct
51 Correct 4 ms 3020 KB Output is correct
52 Correct 4 ms 3020 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 288 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 288 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 292 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 292 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 1 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 1 ms 292 KB Output is correct
32 Correct 1 ms 292 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 1 ms 204 KB Output is correct
35 Correct 1 ms 204 KB Output is correct
36 Correct 1 ms 204 KB Output is correct
37 Correct 1 ms 204 KB Output is correct
38 Correct 1 ms 204 KB Output is correct
39 Correct 1 ms 204 KB Output is correct
40 Correct 1 ms 204 KB Output is correct
41 Correct 1 ms 204 KB Output is correct
42 Correct 1 ms 204 KB Output is correct
43 Correct 1 ms 204 KB Output is correct
44 Correct 1 ms 204 KB Output is correct
45 Correct 1 ms 204 KB Output is correct
46 Correct 1 ms 204 KB Output is correct
47 Correct 1 ms 204 KB Output is correct
48 Correct 1 ms 204 KB Output is correct
49 Correct 1 ms 332 KB Output is correct
50 Correct 1 ms 588 KB Output is correct
51 Correct 2 ms 1100 KB Output is correct
52 Correct 3 ms 3020 KB Output is correct
53 Correct 3 ms 3036 KB Output is correct
54 Correct 22 ms 27596 KB Output is correct
55 Correct 27 ms 27532 KB Output is correct
56 Correct 243 ms 273964 KB Output is correct
57 Correct 230 ms 274004 KB Output is correct
58 Correct 217 ms 273956 KB Output is correct
59 Correct 219 ms 274132 KB Output is correct
60 Correct 225 ms 273964 KB Output is correct
61 Correct 212 ms 273860 KB Output is correct
62 Correct 222 ms 274284 KB Output is correct
63 Correct 232 ms 274312 KB Output is correct
64 Correct 218 ms 274332 KB Output is correct
65 Correct 234 ms 273960 KB Output is correct
66 Correct 222 ms 274352 KB Output is correct
67 Correct 218 ms 274112 KB Output is correct
68 Correct 223 ms 274344 KB Output is correct
69 Correct 1 ms 204 KB Output is correct
70 Correct 1 ms 204 KB Output is correct
71 Correct 224 ms 274364 KB Output is correct
72 Correct 218 ms 274276 KB Output is correct
73 Correct 220 ms 274388 KB Output is correct
74 Correct 1 ms 204 KB Output is correct
75 Correct 1 ms 204 KB Output is correct
76 Correct 1 ms 288 KB Output is correct
77 Correct 1 ms 204 KB Output is correct
78 Correct 259 ms 273860 KB Output is correct
79 Correct 227 ms 273916 KB Output is correct
80 Correct 245 ms 273948 KB Output is correct
81 Correct 235 ms 274372 KB Output is correct
82 Correct 245 ms 273860 KB Output is correct
83 Correct 244 ms 273964 KB Output is correct
84 Correct 1 ms 204 KB Output is correct
85 Correct 1 ms 332 KB Output is correct
86 Correct 1 ms 588 KB Output is correct
87 Correct 1 ms 1100 KB Output is correct
88 Correct 3 ms 3020 KB Output is correct
89 Correct 3 ms 3020 KB Output is correct
90 Correct 3 ms 3020 KB Output is correct
91 Correct 3 ms 3020 KB Output is correct
92 Correct 3 ms 3020 KB Output is correct
93 Correct 3 ms 2992 KB Output is correct
94 Correct 3 ms 3020 KB Output is correct
95 Correct 3 ms 2988 KB Output is correct
96 Correct 3 ms 3020 KB Output is correct
97 Correct 3 ms 3020 KB Output is correct
98 Correct 4 ms 3020 KB Output is correct
99 Correct 4 ms 3020 KB Output is correct
100 Correct 3 ms 2984 KB Output is correct
101 Correct 27 ms 27596 KB Output is correct
102 Correct 23 ms 27556 KB Output is correct
103 Correct 257 ms 273948 KB Output is correct
104 Correct 241 ms 273968 KB Output is correct
105 Correct 240 ms 273880 KB Output is correct
106 Correct 249 ms 273924 KB Output is correct
107 Correct 225 ms 274004 KB Output is correct
108 Correct 243 ms 273964 KB Output is correct
109 Correct 220 ms 274392 KB Output is correct
110 Correct 224 ms 274340 KB Output is correct
111 Correct 244 ms 273880 KB Output is correct
112 Correct 266 ms 273892 KB Output is correct
113 Correct 234 ms 273948 KB Output is correct
114 Correct 238 ms 273956 KB Output is correct
115 Correct 247 ms 273896 KB Output is correct