oj.uz

Submission #255726

# Submission time Handle Problem Language Result Execution time Memory
255726 2020-08-01T18:09:54 Z jainbot27 Arranging Shoes (IOI19_shoes) C++17
100 / 100
 467 ms 28408 KB 
#include <bits/stdc++.h>
#include <shoes.h>
using namespace std;
using ll = long long;

template<class T> struct Seg {
	const T sta = 0;
	T comb(T a, T b){
		return a + b; 
	}
	int n; vector<T> seg;
	void init(int nn){
		n = nn;
		seg.assign(3*n, sta);
	}
	void pull(int q){
		seg[q] = comb(seg[2*q], seg[2*q+1]);
	}
	void update(int q, T val){
		seg[q+=n] += val; for(q/=2; q!=0;q/=2) pull(q);
	}
	T query(int l, int r){
		T ri = sta, la = sta;
		for(l += n, r+= n+1; l < r; l/=2, r/=2){
			if(l&1) ri = comb(ri, seg[l++]);
			if(r&1) la = comb(seg[--r], la);
		}
		return comb(ri, la);
	}
};


ll count_swaps(vector<int> S){
	int n = S.size()/2;
	// cerr << "N " << n << endl;
	Seg<int> seg;
	map<int, vector<int>> mp;
	vector<int> seen(2 * n, 0);
	for(int i=0; i < 2*n; i++){
		mp[S[i]].push_back(i);
	}
	for(auto&z : mp){
		sort(z.second.begin(), z.second.end(), greater<int>());
		// cerr << z.first << " ";
		// for(auto& v : z.second){
			// cerr << v << " " ;
		// }
		// cerr << endl;
	}
	ll ans = 0;
	seg.init(2 * n);
	for(int i = 0; i < 2 * n; i++){
		if(!seen[i]){
			int x = mp[-S[i]].back();
			seen[x] = 1;
			seen[i] = 1;
			mp[-S[i]].pop_back();
			mp[S[i]].pop_back();
			int pos1 = i + seg.query(0, i);
			int pos2 = x + seg.query(0, x);
			if(((pos2 < pos1) && S[i] < 0) || (S[i] > 0 && pos1 < pos2)){
				ans++;
			}
			// cerr << "POS1 " << i << " POS2 " << x << endl;
			ans += abs(pos2 - pos1 - 1);
			seg.update(i + 1, 1);
			seg.update(x, -1);
		}
	}
	return ans;
}


// int main(){
// 	vector<int> arr = {2, 1, -1, -2};
// 	cout << count_swaps(arr) << endl;
// }

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 0 ms 256 KB Output is correct
17 Correct 1 ms 256 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 0 ms 256 KB Output is correct
21 Correct 0 ms 256 KB Output is correct
22 Correct 0 ms 256 KB Output is correct
23 Correct 0 ms 256 KB Output is correct
24 Correct 0 ms 256 KB Output is correct
25 Correct 1 ms 256 KB Output is correct
26 Correct 0 ms 256 KB Output is correct
27 Correct 1 ms 256 KB Output is correct
28 Correct 0 ms 256 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 1 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 ms 256 KB Output is correct
33 Correct 1 ms 256 KB Output is correct
34 Correct 0 ms 256 KB Output is correct
35 Correct 0 ms 256 KB Output is correct
36 Correct 1 ms 256 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 0 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 1 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 1 ms 256 KB Output is correct
16 Correct 1 ms 256 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 384 KB Output is correct
20 Correct 6 ms 1024 KB Output is correct
21 Correct 6 ms 1024 KB Output is correct
22 Correct 59 ms 7188 KB Output is correct
23 Correct 61 ms 7276 KB Output is correct
24 Correct 64 ms 7276 KB Output is correct
25 Correct 55 ms 7024 KB Output is correct
26 Correct 60 ms 7276 KB Output is correct
27 Correct 57 ms 7148 KB Output is correct
28 Correct 54 ms 7172 KB Output is correct
29 Correct 55 ms 7152 KB Output is correct
30 Correct 55 ms 7280 KB Output is correct
31 Correct 60 ms 7172 KB Output is correct
32 Correct 55 ms 7152 KB Output is correct
33 Correct 54 ms 7028 KB Output is correct
34 Correct 55 ms 7152 KB Output is correct
35 Correct 0 ms 256 KB Output is correct
36 Correct 0 ms 256 KB Output is correct
37 Correct 53 ms 7276 KB Output is correct
38 Correct 55 ms 7152 KB Output is correct
39 Correct 55 ms 7152 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 0 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 372 ms 27012 KB Output is correct
6 Correct 145 ms 9080 KB Output is correct
7 Correct 404 ms 28280 KB Output is correct
8 Correct 58 ms 7316 KB Output is correct
9 Correct 357 ms 28152 KB Output is correct
10 Correct 277 ms 17400 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 0 ms 256 KB Output is correct
17 Correct 1 ms 256 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 0 ms 256 KB Output is correct
21 Correct 0 ms 256 KB Output is correct
22 Correct 0 ms 256 KB Output is correct
23 Correct 0 ms 256 KB Output is correct
24 Correct 0 ms 256 KB Output is correct
25 Correct 1 ms 256 KB Output is correct
26 Correct 0 ms 256 KB Output is correct
27 Correct 1 ms 256 KB Output is correct
28 Correct 0 ms 256 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 1 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 ms 256 KB Output is correct
33 Correct 1 ms 256 KB Output is correct
34 Correct 0 ms 256 KB Output is correct
35 Correct 0 ms 256 KB Output is correct
36 Correct 1 ms 256 KB Output is correct
37 Correct 0 ms 256 KB Output is correct
38 Correct 1 ms 256 KB Output is correct
39 Correct 1 ms 384 KB Output is correct
40 Correct 1 ms 384 KB Output is correct
41 Correct 2 ms 640 KB Output is correct
42 Correct 2 ms 640 KB Output is correct
43 Correct 2 ms 512 KB Output is correct
44 Correct 2 ms 512 KB Output is correct
45 Correct 2 ms 512 KB Output is correct
46 Correct 2 ms 512 KB Output is correct
47 Correct 2 ms 512 KB Output is correct
48 Correct 2 ms 384 KB Output is correct
49 Correct 1 ms 384 KB Output is correct
50 Correct 1 ms 384 KB Output is correct
51 Correct 1 ms 384 KB Output is correct
52 Correct 2 ms 516 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 0 ms 256 KB Output is correct
7 Correct 1 ms 256 KB Output is correct
8 Correct 0 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 1 ms 256 KB Output is correct
12 Correct 0 ms 256 KB Output is correct
13 Correct 0 ms 256 KB Output is correct
14 Correct 0 ms 256 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 0 ms 256 KB Output is correct
17 Correct 1 ms 256 KB Output is correct
18 Correct 0 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 0 ms 256 KB Output is correct
21 Correct 0 ms 256 KB Output is correct
22 Correct 0 ms 256 KB Output is correct
23 Correct 0 ms 256 KB Output is correct
24 Correct 0 ms 256 KB Output is correct
25 Correct 1 ms 256 KB Output is correct
26 Correct 0 ms 256 KB Output is correct
27 Correct 1 ms 256 KB Output is correct
28 Correct 0 ms 256 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 1 ms 256 KB Output is correct
31 Correct 0 ms 256 KB Output is correct
32 Correct 0 ms 256 KB Output is correct
33 Correct 1 ms 256 KB Output is correct
34 Correct 0 ms 256 KB Output is correct
35 Correct 0 ms 256 KB Output is correct
36 Correct 1 ms 256 KB Output is correct
37 Correct 0 ms 256 KB Output is correct
38 Correct 0 ms 256 KB Output is correct
39 Correct 0 ms 256 KB Output is correct
40 Correct 1 ms 256 KB Output is correct
41 Correct 0 ms 256 KB Output is correct
42 Correct 0 ms 256 KB Output is correct
43 Correct 0 ms 256 KB Output is correct
44 Correct 0 ms 256 KB Output is correct
45 Correct 0 ms 256 KB Output is correct
46 Correct 0 ms 256 KB Output is correct
47 Correct 1 ms 256 KB Output is correct
48 Correct 0 ms 256 KB Output is correct
49 Correct 1 ms 256 KB Output is correct
50 Correct 1 ms 256 KB Output is correct
51 Correct 1 ms 384 KB Output is correct
52 Correct 1 ms 384 KB Output is correct
53 Correct 1 ms 384 KB Output is correct
54 Correct 6 ms 1024 KB Output is correct
55 Correct 6 ms 1024 KB Output is correct
56 Correct 59 ms 7188 KB Output is correct
57 Correct 61 ms 7276 KB Output is correct
58 Correct 64 ms 7276 KB Output is correct
59 Correct 55 ms 7024 KB Output is correct
60 Correct 60 ms 7276 KB Output is correct
61 Correct 57 ms 7148 KB Output is correct
62 Correct 54 ms 7172 KB Output is correct
63 Correct 55 ms 7152 KB Output is correct
64 Correct 55 ms 7280 KB Output is correct
65 Correct 60 ms 7172 KB Output is correct
66 Correct 55 ms 7152 KB Output is correct
67 Correct 54 ms 7028 KB Output is correct
68 Correct 55 ms 7152 KB Output is correct
69 Correct 0 ms 256 KB Output is correct
70 Correct 0 ms 256 KB Output is correct
71 Correct 53 ms 7276 KB Output is correct
72 Correct 55 ms 7152 KB Output is correct
73 Correct 55 ms 7152 KB Output is correct
74 Correct 0 ms 256 KB Output is correct
75 Correct 1 ms 256 KB Output is correct
76 Correct 0 ms 256 KB Output is correct
77 Correct 0 ms 256 KB Output is correct
78 Correct 372 ms 27012 KB Output is correct
79 Correct 145 ms 9080 KB Output is correct
80 Correct 404 ms 28280 KB Output is correct
81 Correct 58 ms 7316 KB Output is correct
82 Correct 357 ms 28152 KB Output is correct
83 Correct 277 ms 17400 KB Output is correct
84 Correct 0 ms 256 KB Output is correct
85 Correct 1 ms 256 KB Output is correct
86 Correct 1 ms 384 KB Output is correct
87 Correct 1 ms 384 KB Output is correct
88 Correct 2 ms 640 KB Output is correct
89 Correct 2 ms 640 KB Output is correct
90 Correct 2 ms 512 KB Output is correct
91 Correct 2 ms 512 KB Output is correct
92 Correct 2 ms 512 KB Output is correct
93 Correct 2 ms 512 KB Output is correct
94 Correct 2 ms 512 KB Output is correct
95 Correct 2 ms 384 KB Output is correct
96 Correct 1 ms 384 KB Output is correct
97 Correct 1 ms 384 KB Output is correct
98 Correct 1 ms 384 KB Output is correct
99 Correct 2 ms 516 KB Output is correct
100 Correct 2 ms 640 KB Output is correct
101 Correct 19 ms 2816 KB Output is correct
102 Correct 14 ms 1408 KB Output is correct
103 Correct 467 ms 28152 KB Output is correct
104 Correct 344 ms 28280 KB Output is correct
105 Correct 405 ms 18680 KB Output is correct
106 Correct 385 ms 28408 KB Output is correct
107 Correct 158 ms 9724 KB Output is correct
108 Correct 184 ms 11768 KB Output is correct
109 Correct 56 ms 7216 KB Output is correct
110 Correct 53 ms 7152 KB Output is correct
111 Correct 331 ms 25720 KB Output is correct
112 Correct 439 ms 23416 KB Output is correct
113 Correct 174 ms 9848 KB Output is correct
114 Correct 388 ms 28280 KB Output is correct
115 Correct 353 ms 28152 KB Output is correct