oj.uz

Submission #468074

# Submission time Handle Problem Language Result Execution time Memory
468074 2021-08-26T12:13:10 Z gs18103 Arranging Shoes (IOI19_shoes) C++14
100 / 100
 138 ms 140072 KB 
#include "shoes.h"
#include <bits/stdc++.h>
#define eb emplace_back
#define em emplace
#define fi first
#define se second
#define all(v) v.begin(), v.end()

using namespace std;

typedef long long ll;
typedef pair <int, int> pii;
typedef pair <ll, ll> pll;

const int MAX = 101010;
const int INF = 1e9;
const ll LINF = 1e18;

class BinaryIndexedTree {
	vector <int> tree;
	int sz;
public:
	void Init(int n) {
		sz = n;
		tree.resize(n+1);
	}
	void update(int i, int val) {
		while(i <= sz) {
			tree[i] += val;
			i += (i & -i);
		}
	}
	int cal(int l, int r) {
		int ret = 0;
		while(r > 0) {
			ret += tree[r];
			r -= (r & -r);
		}
		l--;
		while(l > 0) {
			ret -= tree[l];
			l -= (l & -l);
		}
		return ret;
	}
};

ll count_swaps(vector<int> s) {
	int n = s.size() / 2;
	vector <int> pre(2*n);
	vector <queue <int> > pos(n+1), neg(n+1);
	
	for(int i = 0; i < 2 * n; i++) {
		if(s[i] > 0) {
			if(neg[s[i]].empty()) {
				pre[i] = -1;
				pos[s[i]].push(i);
			}
			else {
				pre[i] = neg[s[i]].front();
				neg[s[i]].pop();
			}
		}
		else {
			if(pos[-s[i]].empty()) {
				pre[i] = -1;
				neg[-s[i]].push(i);
			}
			else {
				pre[i] = pos[-s[i]].front();
				pos[-s[i]].pop();
			}
		}
	}
	BinaryIndexedTree BIT;
	BIT.Init(2*n);
	ll ans = 0;
	for(int i = 2 * n - 1; i >= 0; i--) {
		if(pre[i] == -1) continue;
		ans += i - pre[i] - BIT.cal(pre[i] + 1, i + 1);
		if(s[i] > 0) ans--;
		BIT.update(pre[i] + 1, 1);
	}
	return ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 0 ms 204 KB Output is correct
23 Correct 0 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 0 ms 296 KB Output is correct
26 Correct 0 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 0 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 1 ms 292 KB Output is correct
33 Correct 0 ms 204 KB Output is correct
34 Correct 1 ms 292 KB Output is correct
35 Correct 0 ms 204 KB Output is correct
36 Correct 1 ms 204 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 1 ms 296 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 588 KB Output is correct
18 Correct 1 ms 1612 KB Output is correct
19 Correct 2 ms 1612 KB Output is correct
20 Correct 12 ms 14128 KB Output is correct
21 Correct 11 ms 14156 KB Output is correct
22 Correct 118 ms 139316 KB Output is correct
23 Correct 110 ms 139224 KB Output is correct
24 Correct 114 ms 139332 KB Output is correct
25 Correct 108 ms 139500 KB Output is correct
26 Correct 117 ms 139328 KB Output is correct
27 Correct 109 ms 139076 KB Output is correct
28 Correct 111 ms 139692 KB Output is correct
29 Correct 112 ms 139812 KB Output is correct
30 Correct 115 ms 139716 KB Output is correct
31 Correct 116 ms 139260 KB Output is correct
32 Correct 109 ms 139720 KB Output is correct
33 Correct 109 ms 139432 KB Output is correct
34 Correct 114 ms 139684 KB Output is correct
35 Correct 0 ms 204 KB Output is correct
36 Correct 1 ms 204 KB Output is correct
37 Correct 110 ms 139748 KB Output is correct
38 Correct 112 ms 139680 KB Output is correct
39 Correct 110 ms 139720 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 138 ms 138040 KB Output is correct
6 Correct 116 ms 138000 KB Output is correct
7 Correct 123 ms 139204 KB Output is correct
8 Correct 108 ms 140072 KB Output is correct
9 Correct 123 ms 139292 KB Output is correct
10 Correct 123 ms 139300 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 0 ms 204 KB Output is correct
23 Correct 0 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 0 ms 296 KB Output is correct
26 Correct 0 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 0 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 1 ms 292 KB Output is correct
33 Correct 0 ms 204 KB Output is correct
34 Correct 1 ms 292 KB Output is correct
35 Correct 0 ms 204 KB Output is correct
36 Correct 1 ms 204 KB Output is correct
37 Correct 0 ms 204 KB Output is correct
38 Correct 1 ms 332 KB Output is correct
39 Correct 1 ms 332 KB Output is correct
40 Correct 1 ms 588 KB Output is correct
41 Correct 2 ms 1612 KB Output is correct
42 Correct 2 ms 1612 KB Output is correct
43 Correct 2 ms 1612 KB Output is correct
44 Correct 2 ms 1612 KB Output is correct
45 Correct 2 ms 1612 KB Output is correct
46 Correct 2 ms 1612 KB Output is correct
47 Correct 2 ms 1612 KB Output is correct
48 Correct 2 ms 1612 KB Output is correct
49 Correct 2 ms 1612 KB Output is correct
50 Correct 2 ms 1612 KB Output is correct
51 Correct 2 ms 1612 KB Output is correct
52 Correct 2 ms 1612 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 0 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 0 ms 204 KB Output is correct
23 Correct 0 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 0 ms 296 KB Output is correct
26 Correct 0 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 0 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 0 ms 204 KB Output is correct
32 Correct 1 ms 292 KB Output is correct
33 Correct 0 ms 204 KB Output is correct
34 Correct 1 ms 292 KB Output is correct
35 Correct 0 ms 204 KB Output is correct
36 Correct 1 ms 204 KB Output is correct
37 Correct 0 ms 204 KB Output is correct
38 Correct 0 ms 204 KB Output is correct
39 Correct 0 ms 204 KB Output is correct
40 Correct 1 ms 204 KB Output is correct
41 Correct 0 ms 204 KB Output is correct
42 Correct 0 ms 204 KB Output is correct
43 Correct 0 ms 204 KB Output is correct
44 Correct 0 ms 204 KB Output is correct
45 Correct 1 ms 296 KB Output is correct
46 Correct 1 ms 204 KB Output is correct
47 Correct 1 ms 204 KB Output is correct
48 Correct 0 ms 204 KB Output is correct
49 Correct 1 ms 332 KB Output is correct
50 Correct 1 ms 332 KB Output is correct
51 Correct 1 ms 588 KB Output is correct
52 Correct 1 ms 1612 KB Output is correct
53 Correct 2 ms 1612 KB Output is correct
54 Correct 12 ms 14128 KB Output is correct
55 Correct 11 ms 14156 KB Output is correct
56 Correct 118 ms 139316 KB Output is correct
57 Correct 110 ms 139224 KB Output is correct
58 Correct 114 ms 139332 KB Output is correct
59 Correct 108 ms 139500 KB Output is correct
60 Correct 117 ms 139328 KB Output is correct
61 Correct 109 ms 139076 KB Output is correct
62 Correct 111 ms 139692 KB Output is correct
63 Correct 112 ms 139812 KB Output is correct
64 Correct 115 ms 139716 KB Output is correct
65 Correct 116 ms 139260 KB Output is correct
66 Correct 109 ms 139720 KB Output is correct
67 Correct 109 ms 139432 KB Output is correct
68 Correct 114 ms 139684 KB Output is correct
69 Correct 0 ms 204 KB Output is correct
70 Correct 1 ms 204 KB Output is correct
71 Correct 110 ms 139748 KB Output is correct
72 Correct 112 ms 139680 KB Output is correct
73 Correct 110 ms 139720 KB Output is correct
74 Correct 0 ms 204 KB Output is correct
75 Correct 0 ms 204 KB Output is correct
76 Correct 0 ms 204 KB Output is correct
77 Correct 0 ms 204 KB Output is correct
78 Correct 138 ms 138040 KB Output is correct
79 Correct 116 ms 138000 KB Output is correct
80 Correct 123 ms 139204 KB Output is correct
81 Correct 108 ms 140072 KB Output is correct
82 Correct 123 ms 139292 KB Output is correct
83 Correct 123 ms 139300 KB Output is correct
84 Correct 0 ms 204 KB Output is correct
85 Correct 1 ms 332 KB Output is correct
86 Correct 1 ms 332 KB Output is correct
87 Correct 1 ms 588 KB Output is correct
88 Correct 2 ms 1612 KB Output is correct
89 Correct 2 ms 1612 KB Output is correct
90 Correct 2 ms 1612 KB Output is correct
91 Correct 2 ms 1612 KB Output is correct
92 Correct 2 ms 1612 KB Output is correct
93 Correct 2 ms 1612 KB Output is correct
94 Correct 2 ms 1612 KB Output is correct
95 Correct 2 ms 1612 KB Output is correct
96 Correct 2 ms 1612 KB Output is correct
97 Correct 2 ms 1612 KB Output is correct
98 Correct 2 ms 1612 KB Output is correct
99 Correct 2 ms 1612 KB Output is correct
100 Correct 2 ms 1612 KB Output is correct
101 Correct 12 ms 14156 KB Output is correct
102 Correct 12 ms 14172 KB Output is correct
103 Correct 134 ms 139196 KB Output is correct
104 Correct 126 ms 139284 KB Output is correct
105 Correct 126 ms 139220 KB Output is correct
106 Correct 128 ms 139240 KB Output is correct
107 Correct 122 ms 139284 KB Output is correct
108 Correct 118 ms 139204 KB Output is correct
109 Correct 111 ms 139688 KB Output is correct
110 Correct 113 ms 139680 KB Output is correct
111 Correct 126 ms 139204 KB Output is correct
112 Correct 128 ms 139276 KB Output is correct
113 Correct 123 ms 139296 KB Output is correct
114 Correct 126 ms 139332 KB Output is correct
115 Correct 126 ms 139252 KB Output is correct