Submission #230973

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
230973	2020-05-12T08:26:52 Z	vioalbert	Arranging Shoes (IOI19_shoes)	C++14	100 / 100	341 ms	146236 KB

shoes

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

const int N = 2e5+5;
int n;
ll ft[N];
unordered_map<int, queue<int>> q;

void update(int x, ll val) {
	for(; x <= n+5; x+=x&(-x)) ft[x]+=val;
}

ll query(int x) {
	ll ret = 0;
	for(; x > 0; x-=x&(-x)) ret+=ft[x];
	return ret;
}

ll count_swaps(vector<int> a) {
	n = a.size();
	memset(ft, 0, sizeof ft);
	ll ans = 0;

	for(int i = 0; i < n; i++) {
		bool right = a[i] > 0;
		if(i > 0 && !q[-a[i]].empty()) {
			int x = q[-a[i]].front(); q[-a[i]].pop();
			ans += query(i+1)-query(x+1);
			if(!right) ans++;
			update(x+1, 1);
			update(i+2, -1);
		} else {
			q[a[i]].push(i);
		}

		update(i+1, 1);
	}

	q.clear();

	return ans;
}

Subtask #1

10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	7 ms	1920 KB	Output is correct
2	Correct	5 ms	1920 KB	Output is correct

Subtask #2

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	7 ms	1920 KB	Output is correct
2	Correct	5 ms	1920 KB	Output is correct
3	Correct	5 ms	1920 KB	Output is correct
4	Correct	5 ms	1920 KB	Output is correct
5	Correct	5 ms	1920 KB	Output is correct
6	Correct	5 ms	1920 KB	Output is correct
7	Correct	5 ms	1920 KB	Output is correct
8	Correct	5 ms	1920 KB	Output is correct
9	Correct	6 ms	1920 KB	Output is correct
10	Correct	5 ms	1920 KB	Output is correct
11	Correct	5 ms	1920 KB	Output is correct
12	Correct	5 ms	1920 KB	Output is correct
13	Correct	5 ms	1920 KB	Output is correct
14	Correct	5 ms	1920 KB	Output is correct
15	Correct	5 ms	1920 KB	Output is correct
16	Correct	5 ms	1920 KB	Output is correct
17	Correct	5 ms	1920 KB	Output is correct
18	Correct	5 ms	1920 KB	Output is correct
19	Correct	5 ms	1920 KB	Output is correct
20	Correct	6 ms	1920 KB	Output is correct
21	Correct	5 ms	1920 KB	Output is correct
22	Correct	6 ms	1920 KB	Output is correct
23	Correct	5 ms	1920 KB	Output is correct
24	Correct	5 ms	1920 KB	Output is correct
25	Correct	6 ms	1920 KB	Output is correct
26	Correct	5 ms	1920 KB	Output is correct
27	Correct	5 ms	1920 KB	Output is correct
28	Correct	5 ms	1920 KB	Output is correct
29	Correct	5 ms	1920 KB	Output is correct
30	Correct	6 ms	1920 KB	Output is correct
31	Correct	5 ms	1920 KB	Output is correct
32	Correct	6 ms	1920 KB	Output is correct
33	Correct	5 ms	1920 KB	Output is correct
34	Correct	5 ms	1920 KB	Output is correct
35	Correct	5 ms	1920 KB	Output is correct
36	Correct	5 ms	1920 KB	Output is correct

Subtask #3

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	7 ms	1920 KB	Output is correct
2	Correct	5 ms	1920 KB	Output is correct
3	Correct	5 ms	1920 KB	Output is correct
4	Correct	5 ms	1824 KB	Output is correct
5	Correct	6 ms	1920 KB	Output is correct
6	Correct	5 ms	1920 KB	Output is correct
7	Correct	5 ms	1920 KB	Output is correct
8	Correct	5 ms	1920 KB	Output is correct
9	Correct	5 ms	1920 KB	Output is correct
10	Correct	5 ms	1920 KB	Output is correct
11	Correct	5 ms	1920 KB	Output is correct
12	Correct	5 ms	1920 KB	Output is correct
13	Correct	5 ms	1920 KB	Output is correct
14	Correct	6 ms	1920 KB	Output is correct
15	Correct	5 ms	1920 KB	Output is correct
16	Correct	5 ms	1920 KB	Output is correct
17	Correct	5 ms	1920 KB	Output is correct
18	Correct	6 ms	1920 KB	Output is correct
19	Correct	6 ms	1920 KB	Output is correct
20	Correct	10 ms	2048 KB	Output is correct
21	Correct	9 ms	2048 KB	Output is correct
22	Correct	55 ms	3448 KB	Output is correct
23	Correct	47 ms	3448 KB	Output is correct
24	Correct	51 ms	3448 KB	Output is correct
25	Correct	43 ms	3832 KB	Output is correct
26	Correct	49 ms	3456 KB	Output is correct
27	Correct	46 ms	3448 KB	Output is correct
28	Correct	44 ms	3832 KB	Output is correct
29	Correct	44 ms	3832 KB	Output is correct
30	Correct	48 ms	3832 KB	Output is correct
31	Correct	50 ms	3448 KB	Output is correct
32	Correct	48 ms	3832 KB	Output is correct
33	Correct	43 ms	3840 KB	Output is correct
34	Correct	46 ms	3832 KB	Output is correct
35	Correct	6 ms	1920 KB	Output is correct
36	Correct	5 ms	1920 KB	Output is correct
37	Correct	48 ms	3836 KB	Output is correct
38	Correct	47 ms	3832 KB	Output is correct
39	Correct	48 ms	3840 KB	Output is correct

Subtask #4

15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	1920 KB	Output is correct
2	Correct	5 ms	1920 KB	Output is correct
3	Correct	5 ms	1920 KB	Output is correct
4	Correct	5 ms	1920 KB	Output is correct
5	Correct	334 ms	146164 KB	Output is correct
6	Correct	96 ms	15992 KB	Output is correct
7	Correct	327 ms	146108 KB	Output is correct
8	Correct	58 ms	3960 KB	Output is correct
9	Correct	324 ms	146216 KB	Output is correct
10	Correct	217 ms	74760 KB	Output is correct

Subtask #5

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	7 ms	1920 KB	Output is correct
2	Correct	5 ms	1920 KB	Output is correct
3	Correct	5 ms	1920 KB	Output is correct
4	Correct	5 ms	1920 KB	Output is correct
5	Correct	5 ms	1920 KB	Output is correct
6	Correct	5 ms	1920 KB	Output is correct
7	Correct	5 ms	1920 KB	Output is correct
8	Correct	5 ms	1920 KB	Output is correct
9	Correct	6 ms	1920 KB	Output is correct
10	Correct	5 ms	1920 KB	Output is correct
11	Correct	5 ms	1920 KB	Output is correct
12	Correct	5 ms	1920 KB	Output is correct
13	Correct	5 ms	1920 KB	Output is correct
14	Correct	5 ms	1920 KB	Output is correct
15	Correct	5 ms	1920 KB	Output is correct
16	Correct	5 ms	1920 KB	Output is correct
17	Correct	5 ms	1920 KB	Output is correct
18	Correct	5 ms	1920 KB	Output is correct
19	Correct	5 ms	1920 KB	Output is correct
20	Correct	6 ms	1920 KB	Output is correct
21	Correct	5 ms	1920 KB	Output is correct
22	Correct	6 ms	1920 KB	Output is correct
23	Correct	5 ms	1920 KB	Output is correct
24	Correct	5 ms	1920 KB	Output is correct
25	Correct	6 ms	1920 KB	Output is correct
26	Correct	5 ms	1920 KB	Output is correct
27	Correct	5 ms	1920 KB	Output is correct
28	Correct	5 ms	1920 KB	Output is correct
29	Correct	5 ms	1920 KB	Output is correct
30	Correct	6 ms	1920 KB	Output is correct
31	Correct	5 ms	1920 KB	Output is correct
32	Correct	6 ms	1920 KB	Output is correct
33	Correct	5 ms	1920 KB	Output is correct
34	Correct	5 ms	1920 KB	Output is correct
35	Correct	5 ms	1920 KB	Output is correct
36	Correct	5 ms	1920 KB	Output is correct
37	Correct	5 ms	1920 KB	Output is correct
38	Correct	5 ms	1920 KB	Output is correct
39	Correct	5 ms	2048 KB	Output is correct
40	Correct	6 ms	2176 KB	Output is correct
41	Correct	7 ms	3328 KB	Output is correct
42	Correct	7 ms	3328 KB	Output is correct
43	Correct	7 ms	3200 KB	Output is correct
44	Correct	7 ms	2944 KB	Output is correct
45	Correct	7 ms	2816 KB	Output is correct
46	Correct	6 ms	2688 KB	Output is correct
47	Correct	6 ms	2560 KB	Output is correct
48	Correct	6 ms	2304 KB	Output is correct
49	Correct	6 ms	2176 KB	Output is correct
50	Correct	6 ms	1920 KB	Output is correct
51	Correct	6 ms	1920 KB	Output is correct
52	Correct	7 ms	3328 KB	Output is correct

Subtask #6

15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	7 ms	1920 KB	Output is correct
2	Correct	5 ms	1920 KB	Output is correct
3	Correct	5 ms	1920 KB	Output is correct
4	Correct	5 ms	1920 KB	Output is correct
5	Correct	5 ms	1920 KB	Output is correct
6	Correct	5 ms	1920 KB	Output is correct
7	Correct	5 ms	1920 KB	Output is correct
8	Correct	5 ms	1920 KB	Output is correct
9	Correct	6 ms	1920 KB	Output is correct
10	Correct	5 ms	1920 KB	Output is correct
11	Correct	5 ms	1920 KB	Output is correct
12	Correct	5 ms	1920 KB	Output is correct
13	Correct	5 ms	1920 KB	Output is correct
14	Correct	5 ms	1920 KB	Output is correct
15	Correct	5 ms	1920 KB	Output is correct
16	Correct	5 ms	1920 KB	Output is correct
17	Correct	5 ms	1920 KB	Output is correct
18	Correct	5 ms	1920 KB	Output is correct
19	Correct	5 ms	1920 KB	Output is correct
20	Correct	6 ms	1920 KB	Output is correct
21	Correct	5 ms	1920 KB	Output is correct
22	Correct	6 ms	1920 KB	Output is correct
23	Correct	5 ms	1920 KB	Output is correct
24	Correct	5 ms	1920 KB	Output is correct
25	Correct	6 ms	1920 KB	Output is correct
26	Correct	5 ms	1920 KB	Output is correct
27	Correct	5 ms	1920 KB	Output is correct
28	Correct	5 ms	1920 KB	Output is correct
29	Correct	5 ms	1920 KB	Output is correct
30	Correct	6 ms	1920 KB	Output is correct
31	Correct	5 ms	1920 KB	Output is correct
32	Correct	6 ms	1920 KB	Output is correct
33	Correct	5 ms	1920 KB	Output is correct
34	Correct	5 ms	1920 KB	Output is correct
35	Correct	5 ms	1920 KB	Output is correct
36	Correct	5 ms	1920 KB	Output is correct
37	Correct	5 ms	1920 KB	Output is correct
38	Correct	5 ms	1824 KB	Output is correct
39	Correct	6 ms	1920 KB	Output is correct
40	Correct	5 ms	1920 KB	Output is correct
41	Correct	5 ms	1920 KB	Output is correct
42	Correct	5 ms	1920 KB	Output is correct
43	Correct	5 ms	1920 KB	Output is correct
44	Correct	5 ms	1920 KB	Output is correct
45	Correct	5 ms	1920 KB	Output is correct
46	Correct	5 ms	1920 KB	Output is correct
47	Correct	5 ms	1920 KB	Output is correct
48	Correct	6 ms	1920 KB	Output is correct
49	Correct	5 ms	1920 KB	Output is correct
50	Correct	5 ms	1920 KB	Output is correct
51	Correct	5 ms	1920 KB	Output is correct
52	Correct	6 ms	1920 KB	Output is correct
53	Correct	6 ms	1920 KB	Output is correct
54	Correct	10 ms	2048 KB	Output is correct
55	Correct	9 ms	2048 KB	Output is correct
56	Correct	55 ms	3448 KB	Output is correct
57	Correct	47 ms	3448 KB	Output is correct
58	Correct	51 ms	3448 KB	Output is correct
59	Correct	43 ms	3832 KB	Output is correct
60	Correct	49 ms	3456 KB	Output is correct
61	Correct	46 ms	3448 KB	Output is correct
62	Correct	44 ms	3832 KB	Output is correct
63	Correct	44 ms	3832 KB	Output is correct
64	Correct	48 ms	3832 KB	Output is correct
65	Correct	50 ms	3448 KB	Output is correct
66	Correct	48 ms	3832 KB	Output is correct
67	Correct	43 ms	3840 KB	Output is correct
68	Correct	46 ms	3832 KB	Output is correct
69	Correct	6 ms	1920 KB	Output is correct
70	Correct	5 ms	1920 KB	Output is correct
71	Correct	48 ms	3836 KB	Output is correct
72	Correct	47 ms	3832 KB	Output is correct
73	Correct	48 ms	3840 KB	Output is correct
74	Correct	6 ms	1920 KB	Output is correct
75	Correct	5 ms	1920 KB	Output is correct
76	Correct	5 ms	1920 KB	Output is correct
77	Correct	5 ms	1920 KB	Output is correct
78	Correct	334 ms	146164 KB	Output is correct
79	Correct	96 ms	15992 KB	Output is correct
80	Correct	327 ms	146108 KB	Output is correct
81	Correct	58 ms	3960 KB	Output is correct
82	Correct	324 ms	146216 KB	Output is correct
83	Correct	217 ms	74760 KB	Output is correct
84	Correct	5 ms	1920 KB	Output is correct
85	Correct	5 ms	1920 KB	Output is correct
86	Correct	5 ms	2048 KB	Output is correct
87	Correct	6 ms	2176 KB	Output is correct
88	Correct	7 ms	3328 KB	Output is correct
89	Correct	7 ms	3328 KB	Output is correct
90	Correct	7 ms	3200 KB	Output is correct
91	Correct	7 ms	2944 KB	Output is correct
92	Correct	7 ms	2816 KB	Output is correct
93	Correct	6 ms	2688 KB	Output is correct
94	Correct	6 ms	2560 KB	Output is correct
95	Correct	6 ms	2304 KB	Output is correct
96	Correct	6 ms	2176 KB	Output is correct
97	Correct	6 ms	1920 KB	Output is correct
98	Correct	6 ms	1920 KB	Output is correct
99	Correct	7 ms	3328 KB	Output is correct
100	Correct	7 ms	3328 KB	Output is correct
101	Correct	27 ms	14976 KB	Output is correct
102	Correct	13 ms	4864 KB	Output is correct
103	Correct	341 ms	146112 KB	Output is correct
104	Correct	286 ms	146108 KB	Output is correct
105	Correct	224 ms	85180 KB	Output is correct
106	Correct	314 ms	146096 KB	Output is correct
107	Correct	94 ms	19320 KB	Output is correct
108	Correct	126 ms	35136 KB	Output is correct
109	Correct	48 ms	3840 KB	Output is correct
110	Correct	46 ms	3960 KB	Output is correct
111	Correct	312 ms	130364 KB	Output is correct
112	Correct	304 ms	114748 KB	Output is correct
113	Correct	111 ms	20984 KB	Output is correct
114	Correct	328 ms	146108 KB	Output is correct
115	Correct	320 ms	146236 KB	Output is correct