oj.uz

Submission #855819

# Submission time Handle Problem Language Result Execution time Memory
855819 2023-10-01T23:24:52 Z dong_liu Arranging Shoes (IOI19_shoes) C++17
100 / 100
 53 ms 14672 KB 
#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;

#define ar array
#define sz(v) int(v.size())

typedef long long ll;
typedef pair<int, int> pi;

struct FT {
	vector<int> t;
	FT(int n) : t(n,0) {}
	
	void upd(int i, int x) {
		while (i < sz(t)) {
			t[i] += x;
			i |= i+1;
		}
	}
	int qry(int i) {
		int x = 0;
		while (i >= 0) {
			x += t[i];
			i &= i+1, i--;
		}
		return x;
	}
	int qry(int l, int r) {
		return qry(r)-qry(l-1);
	}
};

ll count_swaps(vector<int> v) {
	int n = sz(v) / 2;
	vector<vector<int>> L(n), R(n);
	for (int i = 0; i < n*2; i++)
		if (v[i]<0) L[abs(v[i])-1].push_back(i);
		else R[abs(v[i])-1].push_back(i);
	vector<pi> f;
	for (int a = 0; a < n; a++) {
		assert(sz(L[a]) == sz(R[a]));
		for (int j = 0; j < sz(L[a]); j++)
			f.push_back({L[a][j],R[a][j]});
	}
	ll ans = 0;
	for (auto &[l,r] : f) {
		if (l>r) {
			swap(l,r);
			ans++;
		}
	}
	sort(f.begin(), f.end());
	FT ft(n*2);
	for (auto [l,r] : f) {
		ans += ft.qry(l,n*2-1)+ft.qry(r,n*2-1);
		ft.upd(r,1);
	}
	return ans;
}
// int main() {
// 	cout << count_swaps({2,1,-1,-2}) << '\n';
// 	cout << count_swaps({-2,2,2,-2,-2,2}) << '\n';
// }

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 1 ms 348 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 600 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 4 ms 1372 KB Output is correct
21 Correct 3 ms 1372 KB Output is correct
22 Correct 30 ms 9156 KB Output is correct
23 Correct 24 ms 9192 KB Output is correct
24 Correct 27 ms 9148 KB Output is correct
25 Correct 25 ms 9200 KB Output is correct
26 Correct 26 ms 9360 KB Output is correct
27 Correct 24 ms 9036 KB Output is correct
28 Correct 25 ms 9168 KB Output is correct
29 Correct 24 ms 9164 KB Output is correct
30 Correct 24 ms 9164 KB Output is correct
31 Correct 26 ms 9180 KB Output is correct
32 Correct 24 ms 9408 KB Output is correct
33 Correct 24 ms 9160 KB Output is correct
34 Correct 26 ms 9160 KB Output is correct
35 Correct 1 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 23 ms 9028 KB Output is correct
38 Correct 25 ms 9168 KB Output is correct
39 Correct 24 ms 9024 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 49 ms 14540 KB Output is correct
6 Correct 34 ms 9680 KB Output is correct
7 Correct 49 ms 14580 KB Output is correct
8 Correct 27 ms 9128 KB Output is correct
9 Correct 46 ms 14544 KB Output is correct
10 Correct 43 ms 11400 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 600 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 344 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 1 ms 348 KB Output is correct
42 Correct 1 ms 348 KB Output is correct
43 Correct 1 ms 604 KB Output is correct
44 Correct 1 ms 348 KB Output is correct
45 Correct 1 ms 344 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 1 ms 348 KB Output is correct
48 Correct 1 ms 348 KB Output is correct
49 Correct 1 ms 528 KB Output is correct
50 Correct 1 ms 348 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 1 ms 348 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 600 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 1 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 0 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 0 ms 348 KB Output is correct
45 Correct 0 ms 348 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 1 ms 348 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 1 ms 348 KB Output is correct
53 Correct 1 ms 348 KB Output is correct
54 Correct 4 ms 1372 KB Output is correct
55 Correct 3 ms 1372 KB Output is correct
56 Correct 30 ms 9156 KB Output is correct
57 Correct 24 ms 9192 KB Output is correct
58 Correct 27 ms 9148 KB Output is correct
59 Correct 25 ms 9200 KB Output is correct
60 Correct 26 ms 9360 KB Output is correct
61 Correct 24 ms 9036 KB Output is correct
62 Correct 25 ms 9168 KB Output is correct
63 Correct 24 ms 9164 KB Output is correct
64 Correct 24 ms 9164 KB Output is correct
65 Correct 26 ms 9180 KB Output is correct
66 Correct 24 ms 9408 KB Output is correct
67 Correct 24 ms 9160 KB Output is correct
68 Correct 26 ms 9160 KB Output is correct
69 Correct 1 ms 348 KB Output is correct
70 Correct 0 ms 348 KB Output is correct
71 Correct 23 ms 9028 KB Output is correct
72 Correct 25 ms 9168 KB Output is correct
73 Correct 24 ms 9024 KB Output is correct
74 Correct 0 ms 348 KB Output is correct
75 Correct 0 ms 348 KB Output is correct
76 Correct 0 ms 348 KB Output is correct
77 Correct 1 ms 344 KB Output is correct
78 Correct 49 ms 14540 KB Output is correct
79 Correct 34 ms 9680 KB Output is correct
80 Correct 49 ms 14580 KB Output is correct
81 Correct 27 ms 9128 KB Output is correct
82 Correct 46 ms 14544 KB Output is correct
83 Correct 43 ms 11400 KB Output is correct
84 Correct 0 ms 344 KB Output is correct
85 Correct 0 ms 348 KB Output is correct
86 Correct 0 ms 348 KB Output is correct
87 Correct 0 ms 348 KB Output is correct
88 Correct 1 ms 348 KB Output is correct
89 Correct 1 ms 348 KB Output is correct
90 Correct 1 ms 604 KB Output is correct
91 Correct 1 ms 348 KB Output is correct
92 Correct 1 ms 344 KB Output is correct
93 Correct 0 ms 348 KB Output is correct
94 Correct 1 ms 348 KB Output is correct
95 Correct 1 ms 348 KB Output is correct
96 Correct 1 ms 528 KB Output is correct
97 Correct 1 ms 348 KB Output is correct
98 Correct 0 ms 348 KB Output is correct
99 Correct 1 ms 348 KB Output is correct
100 Correct 1 ms 348 KB Output is correct
101 Correct 4 ms 1628 KB Output is correct
102 Correct 4 ms 1372 KB Output is correct
103 Correct 53 ms 14400 KB Output is correct
104 Correct 49 ms 14536 KB Output is correct
105 Correct 45 ms 11720 KB Output is correct
106 Correct 46 ms 14536 KB Output is correct
107 Correct 37 ms 9788 KB Output is correct
108 Correct 37 ms 10188 KB Output is correct
109 Correct 29 ms 9524 KB Output is correct
110 Correct 24 ms 9064 KB Output is correct
111 Correct 45 ms 13948 KB Output is correct
112 Correct 46 ms 13008 KB Output is correct
113 Correct 35 ms 9936 KB Output is correct
114 Correct 51 ms 14672 KB Output is correct
115 Correct 47 ms 14536 KB Output is correct