oj.uz

Submission #172548

# Submission time Handle Problem Language Result Execution time Memory
172548 2020-01-02T02:11:02 Z dsjong Arranging Shoes (IOI19_shoes) C++14
100 / 100
 141 ms 14584 KB 
#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;
vector<int>pos[200005];
int n;
long long cnt=0;
int get(int x){
	if(x<0) return abs(x)+n;
	return x;
}
int fen[200005];
//add x to idx i
void update(int i,int x){
	for(int j=i;j<=2*n;j+=j&(-j)){
		fen[j]+=x;
	}
}
int query(int i){
	int ans=0;
	for(int j=i;j>0;j-=j&(-j)){
		ans+=fen[j];
	}
	return ans;
}

long long count_swaps(vector<int> s) {
	n=s.size()/2;
	for(int i=0;i<2*n;i++){
		pos[get(s[i])].push_back(i);
	}
	for(int i=1;i<=2*n;i++) reverse(pos[i].begin(),pos[i].end());
	memset(fen,0,sizeof fen);
	for(int i=1;i<=2*n;i++) update(i,1);
	for(int i=0;i<2*n;i++){
		//cout<<i<<": ";
		if(pos[get(s[i])].empty()||pos[get(s[i])].back()>i) continue;
		pos[get(s[i])].pop_back();
		int j=pos[get(-s[i])].back();
		pos[get(-s[i])].pop_back();
		int posj=query(j), posi=query(i);
		if(s[i]<0){
			cnt+=posj-posi-1;
			update(i+1,1);
			update(j+1,-1);
		}
		else{
			cnt+=posj-posi;
			update(i+1,1);
			update(j+1,-1);
		}
		//cout<<cnt<<endl;
	}
	return cnt;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5752 KB Output is correct
2 Correct 7 ms 5752 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5752 KB Output is correct
2 Correct 7 ms 5752 KB Output is correct
3 Correct 7 ms 5752 KB Output is correct
4 Correct 7 ms 5752 KB Output is correct
5 Correct 7 ms 5752 KB Output is correct
6 Correct 7 ms 5752 KB Output is correct
7 Correct 7 ms 5752 KB Output is correct
8 Correct 7 ms 5752 KB Output is correct
9 Correct 7 ms 5880 KB Output is correct
10 Correct 7 ms 5752 KB Output is correct
11 Correct 7 ms 5752 KB Output is correct
12 Correct 7 ms 5752 KB Output is correct
13 Correct 7 ms 5752 KB Output is correct
14 Correct 7 ms 5880 KB Output is correct
15 Correct 7 ms 5756 KB Output is correct
16 Correct 7 ms 5872 KB Output is correct
17 Correct 7 ms 5880 KB Output is correct
18 Correct 6 ms 5752 KB Output is correct
19 Correct 7 ms 5752 KB Output is correct
20 Correct 7 ms 5724 KB Output is correct
21 Correct 7 ms 5880 KB Output is correct
22 Correct 7 ms 5752 KB Output is correct
23 Correct 7 ms 5880 KB Output is correct
24 Correct 7 ms 5880 KB Output is correct
25 Correct 7 ms 5752 KB Output is correct
26 Correct 7 ms 5880 KB Output is correct
27 Correct 7 ms 5752 KB Output is correct
28 Correct 7 ms 5752 KB Output is correct
29 Correct 7 ms 5724 KB Output is correct
30 Correct 8 ms 5880 KB Output is correct
31 Correct 7 ms 5752 KB Output is correct
32 Correct 7 ms 5880 KB Output is correct
33 Correct 7 ms 5880 KB Output is correct
34 Correct 7 ms 5756 KB Output is correct
35 Correct 7 ms 5880 KB Output is correct
36 Correct 7 ms 5752 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5752 KB Output is correct
2 Correct 7 ms 5752 KB Output is correct
3 Correct 7 ms 5756 KB Output is correct
4 Correct 7 ms 5752 KB Output is correct
5 Correct 7 ms 5880 KB Output is correct
6 Correct 7 ms 5752 KB Output is correct
7 Correct 7 ms 5752 KB Output is correct
8 Correct 7 ms 5880 KB Output is correct
9 Correct 7 ms 5752 KB Output is correct
10 Correct 7 ms 5880 KB Output is correct
11 Correct 7 ms 5800 KB Output is correct
12 Correct 7 ms 5752 KB Output is correct
13 Correct 7 ms 5756 KB Output is correct
14 Correct 7 ms 5908 KB Output is correct
15 Correct 7 ms 5880 KB Output is correct
16 Correct 7 ms 5752 KB Output is correct
17 Correct 7 ms 5880 KB Output is correct
18 Correct 5 ms 5752 KB Output is correct
19 Correct 7 ms 5884 KB Output is correct
20 Correct 11 ms 6136 KB Output is correct
21 Correct 11 ms 6224 KB Output is correct
22 Correct 50 ms 8856 KB Output is correct
23 Correct 45 ms 9196 KB Output is correct
24 Correct 51 ms 9068 KB Output is correct
25 Correct 46 ms 9168 KB Output is correct
26 Correct 51 ms 9296 KB Output is correct
27 Correct 43 ms 9324 KB Output is correct
28 Correct 48 ms 9072 KB Output is correct
29 Correct 47 ms 9076 KB Output is correct
30 Correct 47 ms 9072 KB Output is correct
31 Correct 50 ms 9092 KB Output is correct
32 Correct 47 ms 9072 KB Output is correct
33 Correct 46 ms 9200 KB Output is correct
34 Correct 47 ms 9072 KB Output is correct
35 Correct 7 ms 5880 KB Output is correct
36 Correct 7 ms 5752 KB Output is correct
37 Correct 47 ms 9072 KB Output is correct
38 Correct 47 ms 9056 KB Output is correct
39 Correct 48 ms 9196 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5780 KB Output is correct
2 Correct 7 ms 5756 KB Output is correct
3 Correct 7 ms 5876 KB Output is correct
4 Correct 7 ms 5752 KB Output is correct
5 Correct 88 ms 14456 KB Output is correct
6 Correct 70 ms 9704 KB Output is correct
7 Correct 91 ms 14328 KB Output is correct
8 Correct 51 ms 9092 KB Output is correct
9 Correct 89 ms 14460 KB Output is correct
10 Correct 93 ms 11256 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5752 KB Output is correct
2 Correct 7 ms 5752 KB Output is correct
3 Correct 7 ms 5752 KB Output is correct
4 Correct 7 ms 5752 KB Output is correct
5 Correct 7 ms 5752 KB Output is correct
6 Correct 7 ms 5752 KB Output is correct
7 Correct 7 ms 5752 KB Output is correct
8 Correct 7 ms 5752 KB Output is correct
9 Correct 7 ms 5880 KB Output is correct
10 Correct 7 ms 5752 KB Output is correct
11 Correct 7 ms 5752 KB Output is correct
12 Correct 7 ms 5752 KB Output is correct
13 Correct 7 ms 5752 KB Output is correct
14 Correct 7 ms 5880 KB Output is correct
15 Correct 7 ms 5756 KB Output is correct
16 Correct 7 ms 5872 KB Output is correct
17 Correct 7 ms 5880 KB Output is correct
18 Correct 6 ms 5752 KB Output is correct
19 Correct 7 ms 5752 KB Output is correct
20 Correct 7 ms 5724 KB Output is correct
21 Correct 7 ms 5880 KB Output is correct
22 Correct 7 ms 5752 KB Output is correct
23 Correct 7 ms 5880 KB Output is correct
24 Correct 7 ms 5880 KB Output is correct
25 Correct 7 ms 5752 KB Output is correct
26 Correct 7 ms 5880 KB Output is correct
27 Correct 7 ms 5752 KB Output is correct
28 Correct 7 ms 5752 KB Output is correct
29 Correct 7 ms 5724 KB Output is correct
30 Correct 8 ms 5880 KB Output is correct
31 Correct 7 ms 5752 KB Output is correct
32 Correct 7 ms 5880 KB Output is correct
33 Correct 7 ms 5880 KB Output is correct
34 Correct 7 ms 5756 KB Output is correct
35 Correct 7 ms 5880 KB Output is correct
36 Correct 7 ms 5752 KB Output is correct
37 Correct 7 ms 5752 KB Output is correct
38 Correct 7 ms 5752 KB Output is correct
39 Correct 7 ms 5880 KB Output is correct
40 Correct 8 ms 5880 KB Output is correct
41 Correct 8 ms 5880 KB Output is correct
42 Correct 7 ms 5880 KB Output is correct
43 Correct 7 ms 5880 KB Output is correct
44 Correct 7 ms 5880 KB Output is correct
45 Correct 7 ms 5880 KB Output is correct
46 Correct 7 ms 5880 KB Output is correct
47 Correct 7 ms 5880 KB Output is correct
48 Correct 8 ms 5880 KB Output is correct
49 Correct 7 ms 5880 KB Output is correct
50 Correct 7 ms 5752 KB Output is correct
51 Correct 7 ms 5880 KB Output is correct
52 Correct 7 ms 5880 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 5752 KB Output is correct
2 Correct 7 ms 5752 KB Output is correct
3 Correct 7 ms 5752 KB Output is correct
4 Correct 7 ms 5752 KB Output is correct
5 Correct 7 ms 5752 KB Output is correct
6 Correct 7 ms 5752 KB Output is correct
7 Correct 7 ms 5752 KB Output is correct
8 Correct 7 ms 5752 KB Output is correct
9 Correct 7 ms 5880 KB Output is correct
10 Correct 7 ms 5752 KB Output is correct
11 Correct 7 ms 5752 KB Output is correct
12 Correct 7 ms 5752 KB Output is correct
13 Correct 7 ms 5752 KB Output is correct
14 Correct 7 ms 5880 KB Output is correct
15 Correct 7 ms 5756 KB Output is correct
16 Correct 7 ms 5872 KB Output is correct
17 Correct 7 ms 5880 KB Output is correct
18 Correct 6 ms 5752 KB Output is correct
19 Correct 7 ms 5752 KB Output is correct
20 Correct 7 ms 5724 KB Output is correct
21 Correct 7 ms 5880 KB Output is correct
22 Correct 7 ms 5752 KB Output is correct
23 Correct 7 ms 5880 KB Output is correct
24 Correct 7 ms 5880 KB Output is correct
25 Correct 7 ms 5752 KB Output is correct
26 Correct 7 ms 5880 KB Output is correct
27 Correct 7 ms 5752 KB Output is correct
28 Correct 7 ms 5752 KB Output is correct
29 Correct 7 ms 5724 KB Output is correct
30 Correct 8 ms 5880 KB Output is correct
31 Correct 7 ms 5752 KB Output is correct
32 Correct 7 ms 5880 KB Output is correct
33 Correct 7 ms 5880 KB Output is correct
34 Correct 7 ms 5756 KB Output is correct
35 Correct 7 ms 5880 KB Output is correct
36 Correct 7 ms 5752 KB Output is correct
37 Correct 7 ms 5756 KB Output is correct
38 Correct 7 ms 5752 KB Output is correct
39 Correct 7 ms 5880 KB Output is correct
40 Correct 7 ms 5752 KB Output is correct
41 Correct 7 ms 5752 KB Output is correct
42 Correct 7 ms 5880 KB Output is correct
43 Correct 7 ms 5752 KB Output is correct
44 Correct 7 ms 5880 KB Output is correct
45 Correct 7 ms 5800 KB Output is correct
46 Correct 7 ms 5752 KB Output is correct
47 Correct 7 ms 5756 KB Output is correct
48 Correct 7 ms 5908 KB Output is correct
49 Correct 7 ms 5880 KB Output is correct
50 Correct 7 ms 5752 KB Output is correct
51 Correct 7 ms 5880 KB Output is correct
52 Correct 5 ms 5752 KB Output is correct
53 Correct 7 ms 5884 KB Output is correct
54 Correct 11 ms 6136 KB Output is correct
55 Correct 11 ms 6224 KB Output is correct
56 Correct 50 ms 8856 KB Output is correct
57 Correct 45 ms 9196 KB Output is correct
58 Correct 51 ms 9068 KB Output is correct
59 Correct 46 ms 9168 KB Output is correct
60 Correct 51 ms 9296 KB Output is correct
61 Correct 43 ms 9324 KB Output is correct
62 Correct 48 ms 9072 KB Output is correct
63 Correct 47 ms 9076 KB Output is correct
64 Correct 47 ms 9072 KB Output is correct
65 Correct 50 ms 9092 KB Output is correct
66 Correct 47 ms 9072 KB Output is correct
67 Correct 46 ms 9200 KB Output is correct
68 Correct 47 ms 9072 KB Output is correct
69 Correct 7 ms 5880 KB Output is correct
70 Correct 7 ms 5752 KB Output is correct
71 Correct 47 ms 9072 KB Output is correct
72 Correct 47 ms 9056 KB Output is correct
73 Correct 48 ms 9196 KB Output is correct
74 Correct 7 ms 5780 KB Output is correct
75 Correct 7 ms 5756 KB Output is correct
76 Correct 7 ms 5876 KB Output is correct
77 Correct 7 ms 5752 KB Output is correct
78 Correct 88 ms 14456 KB Output is correct
79 Correct 70 ms 9704 KB Output is correct
80 Correct 91 ms 14328 KB Output is correct
81 Correct 51 ms 9092 KB Output is correct
82 Correct 89 ms 14460 KB Output is correct
83 Correct 93 ms 11256 KB Output is correct
84 Correct 7 ms 5752 KB Output is correct
85 Correct 7 ms 5752 KB Output is correct
86 Correct 7 ms 5880 KB Output is correct
87 Correct 8 ms 5880 KB Output is correct
88 Correct 8 ms 5880 KB Output is correct
89 Correct 7 ms 5880 KB Output is correct
90 Correct 7 ms 5880 KB Output is correct
91 Correct 7 ms 5880 KB Output is correct
92 Correct 7 ms 5880 KB Output is correct
93 Correct 7 ms 5880 KB Output is correct
94 Correct 7 ms 5880 KB Output is correct
95 Correct 8 ms 5880 KB Output is correct
96 Correct 7 ms 5880 KB Output is correct
97 Correct 7 ms 5752 KB Output is correct
98 Correct 7 ms 5880 KB Output is correct
99 Correct 7 ms 5880 KB Output is correct
100 Correct 8 ms 5880 KB Output is correct
101 Correct 17 ms 6620 KB Output is correct
102 Correct 15 ms 6264 KB Output is correct
103 Correct 114 ms 14584 KB Output is correct
104 Correct 129 ms 14456 KB Output is correct
105 Correct 141 ms 11768 KB Output is correct
106 Correct 89 ms 14460 KB Output is correct
107 Correct 76 ms 9696 KB Output is correct
108 Correct 78 ms 10052 KB Output is correct
109 Correct 48 ms 9400 KB Output is correct
110 Correct 47 ms 9072 KB Output is correct
111 Correct 91 ms 13688 KB Output is correct
112 Correct 137 ms 13064 KB Output is correct
113 Correct 77 ms 9780 KB Output is correct
114 Correct 90 ms 14464 KB Output is correct
115 Correct 89 ms 14456 KB Output is correct