oj.uz

Submission #824431

# Submission time Handle Problem Language Result Execution time Memory
824431 2023-08-14T06:12:16 Z tomruk Arranging Shoes (IOI19_shoes) C++17
100 / 100
 186 ms 30992 KB 
#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;
struct BIT{
	vector<int> bit;
	int n;
	BIT(int sz){
		n = sz + 5;
		bit.assign(n,0);
	}
	void upd(int pos,int val){
		for(;pos<n;pos += pos & -pos){
			bit[pos] += val;
		}
	}
	int get(int pos){
		int ret = 0;
		for(;pos > 0;pos -= pos & -pos){
			ret += bit[pos];
		}
		return ret;
	}
	int get(int l,int r){
		return get(r) - get(l-1);
	}
};
long long count_swaps(vector<int> a){
	int n = a.size()/2;
	long long ans = 0;
	BIT bt(2*n);
	set<int> s;
	set<int> pos[n+1][2];
	for(int i = 0;i<2*n;i++){
		s.insert(i);
		pos[abs(a[i])][a[i] > 0].insert(i);
	}
	for(int i = 0;i<n;i++){
		int val1 = 1e9;
		int val2 = 1e9;
		int num1 = a[*s.begin()];
		int num2 = a[*next(s.begin())];
		int pos1 = *s.begin() + bt.get(*s.begin() + 1,2*n);
		int pos2 = *next(s.begin()) + bt.get(*next(s.begin()) + 1,2*n);
		int pos3 = *pos[abs(num1)][num1 < 0].begin() + bt.get(*pos[abs(num1)][num1 < 0].begin() + 1,2*n);
		int pos4 = *pos[abs(num2)][num2 < 0].begin() + bt.get(*pos[abs(num2)][num2 < 0].begin() + 1,2*n);
		//cout << pos1 << ' ' << pos2 << ' ' << pos3 << ' ' << pos4 << endl;
		val1 = pos3 - pos1  - 1  + (num1 > 0);
		if(pos2 < pos4)
			val2 = pos4 - (pos2-1) + (num2 > 0);
		//cout << val1 << ' ' << val2 << endl;
		if(val1 < val2){
			ans += val1;
			int x = *s.begin();
			int y = *pos[abs(num1)][num1 < 0].begin();
			s.erase(x);
			s.erase(y);
			bt.upd(x + 1,1);
			bt.upd(y + 1,1);
			pos[abs(a[x])][a[x] > 0].erase(x);
			pos[abs(a[y])][a[y] > 0].erase(y);
		}
		else{
			ans += val2;
			int x = *next(s.begin());
			int y = *pos[abs(num2)][num2 < 0].begin();
			s.erase(x);
			s.erase(y);
			bt.upd(x + 1,1);
			bt.upd(y + 1,1);
			pos[abs(a[x])][a[x] > 0].erase(x);
			pos[abs(a[y])][a[y] > 0].erase(y);
		}
	}
	return ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 0 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 1 ms 596 KB Output is correct
20 Correct 10 ms 3324 KB Output is correct
21 Correct 10 ms 3284 KB Output is correct
22 Correct 125 ms 30820 KB Output is correct
23 Correct 120 ms 30820 KB Output is correct
24 Correct 121 ms 30820 KB Output is correct
25 Correct 120 ms 30796 KB Output is correct
26 Correct 136 ms 30804 KB Output is correct
27 Correct 118 ms 30780 KB Output is correct
28 Correct 120 ms 30820 KB Output is correct
29 Correct 124 ms 30704 KB Output is correct
30 Correct 122 ms 30816 KB Output is correct
31 Correct 125 ms 30804 KB Output is correct
32 Correct 120 ms 30816 KB Output is correct
33 Correct 121 ms 30700 KB Output is correct
34 Correct 120 ms 30712 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 122 ms 30804 KB Output is correct
38 Correct 122 ms 30696 KB Output is correct
39 Correct 121 ms 30720 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 129 ms 30884 KB Output is correct
6 Correct 140 ms 30780 KB Output is correct
7 Correct 119 ms 30728 KB Output is correct
8 Correct 121 ms 30808 KB Output is correct
9 Correct 120 ms 30748 KB Output is correct
10 Correct 123 ms 30756 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 0 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 1 ms 212 KB Output is correct
38 Correct 0 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 0 ms 340 KB Output is correct
41 Correct 1 ms 596 KB Output is correct
42 Correct 1 ms 596 KB Output is correct
43 Correct 1 ms 596 KB Output is correct
44 Correct 1 ms 596 KB Output is correct
45 Correct 1 ms 596 KB Output is correct
46 Correct 1 ms 596 KB Output is correct
47 Correct 2 ms 596 KB Output is correct
48 Correct 1 ms 468 KB Output is correct
49 Correct 1 ms 596 KB Output is correct
50 Correct 1 ms 596 KB Output is correct
51 Correct 1 ms 468 KB Output is correct
52 Correct 1 ms 468 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 0 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 0 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 0 ms 212 KB Output is correct
38 Correct 1 ms 212 KB Output is correct
39 Correct 0 ms 212 KB Output is correct
40 Correct 0 ms 212 KB Output is correct
41 Correct 0 ms 212 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 0 ms 212 KB Output is correct
44 Correct 0 ms 212 KB Output is correct
45 Correct 0 ms 212 KB Output is correct
46 Correct 0 ms 212 KB Output is correct
47 Correct 1 ms 212 KB Output is correct
48 Correct 0 ms 212 KB Output is correct
49 Correct 0 ms 212 KB Output is correct
50 Correct 0 ms 212 KB Output is correct
51 Correct 1 ms 340 KB Output is correct
52 Correct 1 ms 468 KB Output is correct
53 Correct 1 ms 596 KB Output is correct
54 Correct 10 ms 3324 KB Output is correct
55 Correct 10 ms 3284 KB Output is correct
56 Correct 125 ms 30820 KB Output is correct
57 Correct 120 ms 30820 KB Output is correct
58 Correct 121 ms 30820 KB Output is correct
59 Correct 120 ms 30796 KB Output is correct
60 Correct 136 ms 30804 KB Output is correct
61 Correct 118 ms 30780 KB Output is correct
62 Correct 120 ms 30820 KB Output is correct
63 Correct 124 ms 30704 KB Output is correct
64 Correct 122 ms 30816 KB Output is correct
65 Correct 125 ms 30804 KB Output is correct
66 Correct 120 ms 30816 KB Output is correct
67 Correct 121 ms 30700 KB Output is correct
68 Correct 120 ms 30712 KB Output is correct
69 Correct 0 ms 212 KB Output is correct
70 Correct 0 ms 212 KB Output is correct
71 Correct 122 ms 30804 KB Output is correct
72 Correct 122 ms 30696 KB Output is correct
73 Correct 121 ms 30720 KB Output is correct
74 Correct 0 ms 212 KB Output is correct
75 Correct 0 ms 212 KB Output is correct
76 Correct 0 ms 212 KB Output is correct
77 Correct 0 ms 212 KB Output is correct
78 Correct 129 ms 30884 KB Output is correct
79 Correct 140 ms 30780 KB Output is correct
80 Correct 119 ms 30728 KB Output is correct
81 Correct 121 ms 30808 KB Output is correct
82 Correct 120 ms 30748 KB Output is correct
83 Correct 123 ms 30756 KB Output is correct
84 Correct 1 ms 212 KB Output is correct
85 Correct 0 ms 212 KB Output is correct
86 Correct 0 ms 212 KB Output is correct
87 Correct 0 ms 340 KB Output is correct
88 Correct 1 ms 596 KB Output is correct
89 Correct 1 ms 596 KB Output is correct
90 Correct 1 ms 596 KB Output is correct
91 Correct 1 ms 596 KB Output is correct
92 Correct 1 ms 596 KB Output is correct
93 Correct 1 ms 596 KB Output is correct
94 Correct 2 ms 596 KB Output is correct
95 Correct 1 ms 468 KB Output is correct
96 Correct 1 ms 596 KB Output is correct
97 Correct 1 ms 596 KB Output is correct
98 Correct 1 ms 468 KB Output is correct
99 Correct 1 ms 468 KB Output is correct
100 Correct 1 ms 596 KB Output is correct
101 Correct 10 ms 3284 KB Output is correct
102 Correct 12 ms 3276 KB Output is correct
103 Correct 167 ms 30784 KB Output is correct
104 Correct 109 ms 30844 KB Output is correct
105 Correct 149 ms 30816 KB Output is correct
106 Correct 118 ms 30816 KB Output is correct
107 Correct 143 ms 30796 KB Output is correct
108 Correct 128 ms 30764 KB Output is correct
109 Correct 124 ms 30820 KB Output is correct
110 Correct 127 ms 30828 KB Output is correct
111 Correct 133 ms 30740 KB Output is correct
112 Correct 151 ms 30796 KB Output is correct
113 Correct 186 ms 30992 KB Output is correct
114 Correct 129 ms 30784 KB Output is correct
115 Correct 119 ms 30812 KB Output is correct