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Submission #271564

# Submission time Handle Problem Language Result Execution time Memory
271564 2020-08-18T06:42:48 Z SeDunion Arranging Shoes (IOI19_shoes) C++14
100 / 100
 163 ms 20472 KB 
#include "shoes.h"
#include <bits/stdc++.h>

using namespace std;
using ll = long long;
const int N = 2e5 + 55;

ll t[N];

void upd (int i, int v) {
	while (i < N) {
		t[i] += v;
		i |= (i + 1);
	}
}

ll getP (int i) {
	ll res = 0;
	while (i >= 0) {
		res += t[i];
		i &= (i + 1);
		--i;
	}
	return res;
}

ll get (int l, int r) {
	if (l > r) return 0;
	// assert (l <= r);
	return getP (r) - getP (l - 1);
}

vector <int> v[N * 2];

ll count_swaps (vector<int> s) {
	int n = s.size();
	for (int i = n - 1 ; i >= 0 ; -- i) {
		upd (i, 1);
		v[s[i] + N].push_back (i);
	}
	ll ans = 0;
	for (int i = 0 ; i < n ; ++ i) {
		if (get (i, i) == 0) continue;
		int x = s[i];
		int y = -s[i];
		assert (v[x + N].size() && v[y + N].size());
		int j = v[y + N].back();
		assert (i < j);
		v[y + N].pop_back();
		assert (v[x + N].back() == i);
		v[x + N].pop_back();
		ans += get (i + 1, j - 1);
		if (x > 0) ans++;
		upd (j, -1);
		upd (i, -1);
	}
	return ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9728 KB Output is correct
2 Correct 8 ms 9728 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9728 KB Output is correct
2 Correct 8 ms 9728 KB Output is correct
3 Correct 7 ms 9728 KB Output is correct
4 Correct 7 ms 9856 KB Output is correct
5 Correct 8 ms 9728 KB Output is correct
6 Correct 8 ms 9728 KB Output is correct
7 Correct 8 ms 9728 KB Output is correct
8 Correct 7 ms 9728 KB Output is correct
9 Correct 7 ms 9728 KB Output is correct
10 Correct 7 ms 9728 KB Output is correct
11 Correct 7 ms 9728 KB Output is correct
12 Correct 7 ms 9728 KB Output is correct
13 Correct 7 ms 9728 KB Output is correct
14 Correct 9 ms 9728 KB Output is correct
15 Correct 9 ms 9728 KB Output is correct
16 Correct 7 ms 9728 KB Output is correct
17 Correct 7 ms 9728 KB Output is correct
18 Correct 9 ms 9728 KB Output is correct
19 Correct 7 ms 9728 KB Output is correct
20 Correct 8 ms 9728 KB Output is correct
21 Correct 8 ms 9728 KB Output is correct
22 Correct 7 ms 9728 KB Output is correct
23 Correct 7 ms 9728 KB Output is correct
24 Correct 7 ms 9728 KB Output is correct
25 Correct 9 ms 9728 KB Output is correct
26 Correct 8 ms 9728 KB Output is correct
27 Correct 7 ms 9728 KB Output is correct
28 Correct 7 ms 9728 KB Output is correct
29 Correct 7 ms 9728 KB Output is correct
30 Correct 7 ms 9728 KB Output is correct
31 Correct 9 ms 9728 KB Output is correct
32 Correct 7 ms 9728 KB Output is correct
33 Correct 7 ms 9728 KB Output is correct
34 Correct 12 ms 9728 KB Output is correct
35 Correct 7 ms 9728 KB Output is correct
36 Correct 7 ms 9728 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9728 KB Output is correct
2 Correct 8 ms 9728 KB Output is correct
3 Correct 9 ms 9728 KB Output is correct
4 Correct 7 ms 9728 KB Output is correct
5 Correct 7 ms 9728 KB Output is correct
6 Correct 6 ms 9728 KB Output is correct
7 Correct 7 ms 9728 KB Output is correct
8 Correct 8 ms 9728 KB Output is correct
9 Correct 8 ms 9740 KB Output is correct
10 Correct 9 ms 9728 KB Output is correct
11 Correct 8 ms 9728 KB Output is correct
12 Correct 8 ms 9728 KB Output is correct
13 Correct 7 ms 9728 KB Output is correct
14 Correct 8 ms 9704 KB Output is correct
15 Correct 7 ms 9728 KB Output is correct
16 Correct 8 ms 9728 KB Output is correct
17 Correct 7 ms 9728 KB Output is correct
18 Correct 7 ms 9728 KB Output is correct
19 Correct 7 ms 9728 KB Output is correct
20 Correct 12 ms 10368 KB Output is correct
21 Correct 15 ms 10368 KB Output is correct
22 Correct 60 ms 14976 KB Output is correct
23 Correct 54 ms 15212 KB Output is correct
24 Correct 57 ms 15024 KB Output is correct
25 Correct 54 ms 14896 KB Output is correct
26 Correct 60 ms 15148 KB Output is correct
27 Correct 53 ms 14956 KB Output is correct
28 Correct 70 ms 14960 KB Output is correct
29 Correct 55 ms 15088 KB Output is correct
30 Correct 68 ms 15088 KB Output is correct
31 Correct 63 ms 14980 KB Output is correct
32 Correct 58 ms 15020 KB Output is correct
33 Correct 55 ms 14828 KB Output is correct
34 Correct 57 ms 15092 KB Output is correct
35 Correct 8 ms 9728 KB Output is correct
36 Correct 7 ms 9728 KB Output is correct
37 Correct 56 ms 15092 KB Output is correct
38 Correct 59 ms 15024 KB Output is correct
39 Correct 163 ms 14960 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 9728 KB Output is correct
2 Correct 8 ms 9728 KB Output is correct
3 Correct 10 ms 9744 KB Output is correct
4 Correct 7 ms 9728 KB Output is correct
5 Correct 96 ms 20344 KB Output is correct
6 Correct 82 ms 15608 KB Output is correct
7 Correct 103 ms 20332 KB Output is correct
8 Correct 56 ms 15028 KB Output is correct
9 Correct 93 ms 20472 KB Output is correct
10 Correct 115 ms 17272 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9728 KB Output is correct
2 Correct 8 ms 9728 KB Output is correct
3 Correct 7 ms 9728 KB Output is correct
4 Correct 7 ms 9856 KB Output is correct
5 Correct 8 ms 9728 KB Output is correct
6 Correct 8 ms 9728 KB Output is correct
7 Correct 8 ms 9728 KB Output is correct
8 Correct 7 ms 9728 KB Output is correct
9 Correct 7 ms 9728 KB Output is correct
10 Correct 7 ms 9728 KB Output is correct
11 Correct 7 ms 9728 KB Output is correct
12 Correct 7 ms 9728 KB Output is correct
13 Correct 7 ms 9728 KB Output is correct
14 Correct 9 ms 9728 KB Output is correct
15 Correct 9 ms 9728 KB Output is correct
16 Correct 7 ms 9728 KB Output is correct
17 Correct 7 ms 9728 KB Output is correct
18 Correct 9 ms 9728 KB Output is correct
19 Correct 7 ms 9728 KB Output is correct
20 Correct 8 ms 9728 KB Output is correct
21 Correct 8 ms 9728 KB Output is correct
22 Correct 7 ms 9728 KB Output is correct
23 Correct 7 ms 9728 KB Output is correct
24 Correct 7 ms 9728 KB Output is correct
25 Correct 9 ms 9728 KB Output is correct
26 Correct 8 ms 9728 KB Output is correct
27 Correct 7 ms 9728 KB Output is correct
28 Correct 7 ms 9728 KB Output is correct
29 Correct 7 ms 9728 KB Output is correct
30 Correct 7 ms 9728 KB Output is correct
31 Correct 9 ms 9728 KB Output is correct
32 Correct 7 ms 9728 KB Output is correct
33 Correct 7 ms 9728 KB Output is correct
34 Correct 12 ms 9728 KB Output is correct
35 Correct 7 ms 9728 KB Output is correct
36 Correct 7 ms 9728 KB Output is correct
37 Correct 7 ms 9728 KB Output is correct
38 Correct 7 ms 9728 KB Output is correct
39 Correct 7 ms 9728 KB Output is correct
40 Correct 8 ms 9728 KB Output is correct
41 Correct 8 ms 9856 KB Output is correct
42 Correct 7 ms 9856 KB Output is correct
43 Correct 8 ms 9856 KB Output is correct
44 Correct 9 ms 9856 KB Output is correct
45 Correct 8 ms 9856 KB Output is correct
46 Correct 9 ms 9856 KB Output is correct
47 Correct 8 ms 9984 KB Output is correct
48 Correct 8 ms 9856 KB Output is correct
49 Correct 8 ms 9856 KB Output is correct
50 Correct 8 ms 9728 KB Output is correct
51 Correct 7 ms 9856 KB Output is correct
52 Correct 8 ms 9788 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9728 KB Output is correct
2 Correct 8 ms 9728 KB Output is correct
3 Correct 7 ms 9728 KB Output is correct
4 Correct 7 ms 9856 KB Output is correct
5 Correct 8 ms 9728 KB Output is correct
6 Correct 8 ms 9728 KB Output is correct
7 Correct 8 ms 9728 KB Output is correct
8 Correct 7 ms 9728 KB Output is correct
9 Correct 7 ms 9728 KB Output is correct
10 Correct 7 ms 9728 KB Output is correct
11 Correct 7 ms 9728 KB Output is correct
12 Correct 7 ms 9728 KB Output is correct
13 Correct 7 ms 9728 KB Output is correct
14 Correct 9 ms 9728 KB Output is correct
15 Correct 9 ms 9728 KB Output is correct
16 Correct 7 ms 9728 KB Output is correct
17 Correct 7 ms 9728 KB Output is correct
18 Correct 9 ms 9728 KB Output is correct
19 Correct 7 ms 9728 KB Output is correct
20 Correct 8 ms 9728 KB Output is correct
21 Correct 8 ms 9728 KB Output is correct
22 Correct 7 ms 9728 KB Output is correct
23 Correct 7 ms 9728 KB Output is correct
24 Correct 7 ms 9728 KB Output is correct
25 Correct 9 ms 9728 KB Output is correct
26 Correct 8 ms 9728 KB Output is correct
27 Correct 7 ms 9728 KB Output is correct
28 Correct 7 ms 9728 KB Output is correct
29 Correct 7 ms 9728 KB Output is correct
30 Correct 7 ms 9728 KB Output is correct
31 Correct 9 ms 9728 KB Output is correct
32 Correct 7 ms 9728 KB Output is correct
33 Correct 7 ms 9728 KB Output is correct
34 Correct 12 ms 9728 KB Output is correct
35 Correct 7 ms 9728 KB Output is correct
36 Correct 7 ms 9728 KB Output is correct
37 Correct 9 ms 9728 KB Output is correct
38 Correct 7 ms 9728 KB Output is correct
39 Correct 7 ms 9728 KB Output is correct
40 Correct 6 ms 9728 KB Output is correct
41 Correct 7 ms 9728 KB Output is correct
42 Correct 8 ms 9728 KB Output is correct
43 Correct 8 ms 9740 KB Output is correct
44 Correct 9 ms 9728 KB Output is correct
45 Correct 8 ms 9728 KB Output is correct
46 Correct 8 ms 9728 KB Output is correct
47 Correct 7 ms 9728 KB Output is correct
48 Correct 8 ms 9704 KB Output is correct
49 Correct 7 ms 9728 KB Output is correct
50 Correct 8 ms 9728 KB Output is correct
51 Correct 7 ms 9728 KB Output is correct
52 Correct 7 ms 9728 KB Output is correct
53 Correct 7 ms 9728 KB Output is correct
54 Correct 12 ms 10368 KB Output is correct
55 Correct 15 ms 10368 KB Output is correct
56 Correct 60 ms 14976 KB Output is correct
57 Correct 54 ms 15212 KB Output is correct
58 Correct 57 ms 15024 KB Output is correct
59 Correct 54 ms 14896 KB Output is correct
60 Correct 60 ms 15148 KB Output is correct
61 Correct 53 ms 14956 KB Output is correct
62 Correct 70 ms 14960 KB Output is correct
63 Correct 55 ms 15088 KB Output is correct
64 Correct 68 ms 15088 KB Output is correct
65 Correct 63 ms 14980 KB Output is correct
66 Correct 58 ms 15020 KB Output is correct
67 Correct 55 ms 14828 KB Output is correct
68 Correct 57 ms 15092 KB Output is correct
69 Correct 8 ms 9728 KB Output is correct
70 Correct 7 ms 9728 KB Output is correct
71 Correct 56 ms 15092 KB Output is correct
72 Correct 59 ms 15024 KB Output is correct
73 Correct 163 ms 14960 KB Output is correct
74 Correct 8 ms 9728 KB Output is correct
75 Correct 8 ms 9728 KB Output is correct
76 Correct 10 ms 9744 KB Output is correct
77 Correct 7 ms 9728 KB Output is correct
78 Correct 96 ms 20344 KB Output is correct
79 Correct 82 ms 15608 KB Output is correct
80 Correct 103 ms 20332 KB Output is correct
81 Correct 56 ms 15028 KB Output is correct
82 Correct 93 ms 20472 KB Output is correct
83 Correct 115 ms 17272 KB Output is correct
84 Correct 7 ms 9728 KB Output is correct
85 Correct 7 ms 9728 KB Output is correct
86 Correct 7 ms 9728 KB Output is correct
87 Correct 8 ms 9728 KB Output is correct
88 Correct 8 ms 9856 KB Output is correct
89 Correct 7 ms 9856 KB Output is correct
90 Correct 8 ms 9856 KB Output is correct
91 Correct 9 ms 9856 KB Output is correct
92 Correct 8 ms 9856 KB Output is correct
93 Correct 9 ms 9856 KB Output is correct
94 Correct 8 ms 9984 KB Output is correct
95 Correct 8 ms 9856 KB Output is correct
96 Correct 8 ms 9856 KB Output is correct
97 Correct 8 ms 9728 KB Output is correct
98 Correct 7 ms 9856 KB Output is correct
99 Correct 8 ms 9788 KB Output is correct
100 Correct 8 ms 9856 KB Output is correct
101 Correct 16 ms 10752 KB Output is correct
102 Correct 13 ms 10368 KB Output is correct
103 Correct 138 ms 20408 KB Output is correct
104 Correct 121 ms 20344 KB Output is correct
105 Correct 123 ms 17752 KB Output is correct
106 Correct 92 ms 20344 KB Output is correct
107 Correct 113 ms 15736 KB Output is correct
108 Correct 113 ms 15992 KB Output is correct
109 Correct 58 ms 15216 KB Output is correct
110 Correct 54 ms 14960 KB Output is correct
111 Correct 97 ms 19704 KB Output is correct
112 Correct 112 ms 18936 KB Output is correct
113 Correct 82 ms 15736 KB Output is correct
114 Correct 108 ms 20344 KB Output is correct
115 Correct 111 ms 20372 KB Output is correct