oj.uz

Submission #244830

# Submission time Handle Problem Language Result Execution time Memory
244830 2020-07-05T07:01:21 Z crossing0ver Arranging Shoes (IOI19_shoes) C++17
100 / 100
 175 ms 20492 KB 
#include<bits/stdc++.h>
#define ll long long 
#ifndef local
#include "shoes.h"
#endif
using namespace std;
const int MAXN = 2e5+5;
int BIT[MAXN];
void add(int pos,int val) {
	for (pos++;pos < MAXN;pos+=pos&-pos)
		BIT[pos]+=val;
}
int get(int pos) {
	int s = 0;
	for (pos++;pos;pos-=pos&-pos)
		s += BIT[pos];
	return s;
}
ll count_swaps(vector<int> a) {
	int n = a.size();
	ll ans = 0;
	vector< vector<vector<int>> > v(2,vector< vector<int> >(n+1));
	for (int i = 0;i < n; i++) {
		if (a[i] < 0) v[1][-a[i]].push_back(i);
		else v[0][a[i]].push_back(i);
		add(i,1);
	}
	vector<int> vis(n,1);
	for (int i = 1; i <= n; i++)
	for (int t = 0; t < 2; t++)
		reverse(v[t][i].begin(),v[t][i].end());
	for (int i = 0; i < n;i++) {
		if (vis[i] == 0) continue;
		int x = a[i];
		int val = abs(x);
		int t = (x < 0 ? 0 : 1);
		int ps = v[t][val].back();
		vis[i] = 0;
		v[t][val].pop_back();
		v[!t][val].pop_back();
		if (i+1 < ps) ans+= get(ps-1) - get(i);
		add(ps,-1);
		add(i,-1);
		if (t == 1) ans++;
		vis[ps] = 0;
	}
	return ans;	
}
#ifdef local
main() {
	int n; cin >> n;
	vector<int> v(n);
	for (int i = 0;i < n; i++) cin >> v[i];
	cout << count_swaps(v);
}
#endif

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 380 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 4 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 4 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 4 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 4 ms 384 KB Output is correct
21 Correct 4 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 4 ms 384 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 384 KB Output is correct
26 Correct 5 ms 384 KB Output is correct
27 Correct 4 ms 384 KB Output is correct
28 Correct 5 ms 384 KB Output is correct
29 Correct 5 ms 384 KB Output is correct
30 Correct 5 ms 384 KB Output is correct
31 Correct 4 ms 384 KB Output is correct
32 Correct 5 ms 384 KB Output is correct
33 Correct 5 ms 384 KB Output is correct
34 Correct 4 ms 384 KB Output is correct
35 Correct 5 ms 384 KB Output is correct
36 Correct 4 ms 384 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 4 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 4 ms 384 KB Output is correct
16 Correct 4 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 512 KB Output is correct
19 Correct 5 ms 512 KB Output is correct
20 Correct 10 ms 1952 KB Output is correct
21 Correct 10 ms 1920 KB Output is correct
22 Correct 58 ms 15992 KB Output is correct
23 Correct 55 ms 16120 KB Output is correct
24 Correct 59 ms 16120 KB Output is correct
25 Correct 57 ms 16120 KB Output is correct
26 Correct 61 ms 17276 KB Output is correct
27 Correct 55 ms 17016 KB Output is correct
28 Correct 59 ms 17272 KB Output is correct
29 Correct 57 ms 17400 KB Output is correct
30 Correct 56 ms 17272 KB Output is correct
31 Correct 59 ms 17276 KB Output is correct
32 Correct 59 ms 17272 KB Output is correct
33 Correct 55 ms 17016 KB Output is correct
34 Correct 56 ms 17272 KB Output is correct
35 Correct 5 ms 384 KB Output is correct
36 Correct 5 ms 384 KB Output is correct
37 Correct 57 ms 17272 KB Output is correct
38 Correct 56 ms 17272 KB Output is correct
39 Correct 55 ms 17272 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 384 KB Output is correct
5 Correct 130 ms 19108 KB Output is correct
6 Correct 77 ms 17272 KB Output is correct
7 Correct 97 ms 20428 KB Output is correct
8 Correct 58 ms 17272 KB Output is correct
9 Correct 93 ms 20392 KB Output is correct
10 Correct 115 ms 17316 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 380 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 4 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 4 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 4 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 4 ms 384 KB Output is correct
21 Correct 4 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 4 ms 384 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 384 KB Output is correct
26 Correct 5 ms 384 KB Output is correct
27 Correct 4 ms 384 KB Output is correct
28 Correct 5 ms 384 KB Output is correct
29 Correct 5 ms 384 KB Output is correct
30 Correct 5 ms 384 KB Output is correct
31 Correct 4 ms 384 KB Output is correct
32 Correct 5 ms 384 KB Output is correct
33 Correct 5 ms 384 KB Output is correct
34 Correct 4 ms 384 KB Output is correct
35 Correct 5 ms 384 KB Output is correct
36 Correct 4 ms 384 KB Output is correct
37 Correct 5 ms 384 KB Output is correct
38 Correct 5 ms 384 KB Output is correct
39 Correct 5 ms 384 KB Output is correct
40 Correct 5 ms 384 KB Output is correct
41 Correct 5 ms 512 KB Output is correct
42 Correct 5 ms 512 KB Output is correct
43 Correct 5 ms 512 KB Output is correct
44 Correct 6 ms 512 KB Output is correct
45 Correct 5 ms 512 KB Output is correct
46 Correct 5 ms 512 KB Output is correct
47 Correct 5 ms 512 KB Output is correct
48 Correct 5 ms 512 KB Output is correct
49 Correct 5 ms 512 KB Output is correct
50 Correct 5 ms 512 KB Output is correct
51 Correct 5 ms 512 KB Output is correct
52 Correct 5 ms 512 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 380 KB Output is correct
5 Correct 4 ms 384 KB Output is correct
6 Correct 4 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 4 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 4 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 4 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 384 KB Output is correct
20 Correct 4 ms 384 KB Output is correct
21 Correct 4 ms 384 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 4 ms 384 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 384 KB Output is correct
26 Correct 5 ms 384 KB Output is correct
27 Correct 4 ms 384 KB Output is correct
28 Correct 5 ms 384 KB Output is correct
29 Correct 5 ms 384 KB Output is correct
30 Correct 5 ms 384 KB Output is correct
31 Correct 4 ms 384 KB Output is correct
32 Correct 5 ms 384 KB Output is correct
33 Correct 5 ms 384 KB Output is correct
34 Correct 4 ms 384 KB Output is correct
35 Correct 5 ms 384 KB Output is correct
36 Correct 4 ms 384 KB Output is correct
37 Correct 5 ms 384 KB Output is correct
38 Correct 5 ms 384 KB Output is correct
39 Correct 5 ms 384 KB Output is correct
40 Correct 4 ms 384 KB Output is correct
41 Correct 5 ms 384 KB Output is correct
42 Correct 4 ms 384 KB Output is correct
43 Correct 5 ms 384 KB Output is correct
44 Correct 5 ms 384 KB Output is correct
45 Correct 4 ms 384 KB Output is correct
46 Correct 4 ms 384 KB Output is correct
47 Correct 5 ms 384 KB Output is correct
48 Correct 5 ms 384 KB Output is correct
49 Correct 4 ms 384 KB Output is correct
50 Correct 4 ms 384 KB Output is correct
51 Correct 5 ms 384 KB Output is correct
52 Correct 5 ms 512 KB Output is correct
53 Correct 5 ms 512 KB Output is correct
54 Correct 10 ms 1952 KB Output is correct
55 Correct 10 ms 1920 KB Output is correct
56 Correct 58 ms 15992 KB Output is correct
57 Correct 55 ms 16120 KB Output is correct
58 Correct 59 ms 16120 KB Output is correct
59 Correct 57 ms 16120 KB Output is correct
60 Correct 61 ms 17276 KB Output is correct
61 Correct 55 ms 17016 KB Output is correct
62 Correct 59 ms 17272 KB Output is correct
63 Correct 57 ms 17400 KB Output is correct
64 Correct 56 ms 17272 KB Output is correct
65 Correct 59 ms 17276 KB Output is correct
66 Correct 59 ms 17272 KB Output is correct
67 Correct 55 ms 17016 KB Output is correct
68 Correct 56 ms 17272 KB Output is correct
69 Correct 5 ms 384 KB Output is correct
70 Correct 5 ms 384 KB Output is correct
71 Correct 57 ms 17272 KB Output is correct
72 Correct 56 ms 17272 KB Output is correct
73 Correct 55 ms 17272 KB Output is correct
74 Correct 4 ms 384 KB Output is correct
75 Correct 4 ms 384 KB Output is correct
76 Correct 5 ms 384 KB Output is correct
77 Correct 4 ms 384 KB Output is correct
78 Correct 130 ms 19108 KB Output is correct
79 Correct 77 ms 17272 KB Output is correct
80 Correct 97 ms 20428 KB Output is correct
81 Correct 58 ms 17272 KB Output is correct
82 Correct 93 ms 20392 KB Output is correct
83 Correct 115 ms 17316 KB Output is correct
84 Correct 5 ms 384 KB Output is correct
85 Correct 5 ms 384 KB Output is correct
86 Correct 5 ms 384 KB Output is correct
87 Correct 5 ms 384 KB Output is correct
88 Correct 5 ms 512 KB Output is correct
89 Correct 5 ms 512 KB Output is correct
90 Correct 5 ms 512 KB Output is correct
91 Correct 6 ms 512 KB Output is correct
92 Correct 5 ms 512 KB Output is correct
93 Correct 5 ms 512 KB Output is correct
94 Correct 5 ms 512 KB Output is correct
95 Correct 5 ms 512 KB Output is correct
96 Correct 5 ms 512 KB Output is correct
97 Correct 5 ms 512 KB Output is correct
98 Correct 5 ms 512 KB Output is correct
99 Correct 5 ms 512 KB Output is correct
100 Correct 5 ms 512 KB Output is correct
101 Correct 13 ms 2216 KB Output is correct
102 Correct 11 ms 2048 KB Output is correct
103 Correct 175 ms 20492 KB Output is correct
104 Correct 113 ms 20392 KB Output is correct
105 Correct 120 ms 17696 KB Output is correct
106 Correct 107 ms 20392 KB Output is correct
107 Correct 106 ms 17272 KB Output is correct
108 Correct 91 ms 17272 KB Output is correct
109 Correct 59 ms 17272 KB Output is correct
110 Correct 58 ms 17272 KB Output is correct
111 Correct 103 ms 19624 KB Output is correct
112 Correct 145 ms 18980 KB Output is correct
113 Correct 97 ms 17276 KB Output is correct
114 Correct 108 ms 20392 KB Output is correct
115 Correct 93 ms 20396 KB Output is correct