Submission #162850

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
162850	2019-11-10T06:30:50 Z	fluffypotato	Arranging Shoes (IOI19_shoes)	Java 11	100 / 100	681 ms	82552 KB

shoes

import java.util.ArrayList;
import java.util.*;

public class shoes {
	public long count_swaps(int[] s) {
		int n=s.length;
		PriorityQueue<Integer>pos[]=new PriorityQueue[n];
		PriorityQueue<Integer>neg[]=new PriorityQueue[n];
		for(int i=0;i<n;i++){
			pos[i]=new PriorityQueue<>();
			neg[i]=new PriorityQueue<>();

			update(i,1,220000);
		}
		for(int i=0;i<n;i++){
			if(s[i]>0){
				pos[s[i]].add(i);
			}
			else{
				neg[-1*s[i]].add(i);
			}
		}
//		for(int i=0;i<n;i++){
//			Collections.sort(pos[i]);
//		}
		long ans=0;
		boolean[]visited=new boolean[n];
		for(int i=0;i<n;i++){
			if(!visited[i]){
				if(s[i]>0){
					visited[i]=true;
					pos[s[i]].poll();
					int idx=neg[s[i]].poll();
					visited[idx]=true;
					long add=query(idx)-query(i);
					ans+=add==0?0:add;
					update(idx,-1,220000);
				}
				else{
					visited[i]=true;
					neg[-1*s[i]].poll();
					int idx=pos[-1*s[i]].poll();
					visited[idx]=true;
					long add=query(idx)-query(i);
					ans+=add==0?0:add-1;
					update(idx,-1,220000);

				}
			}
		}
		return ans;
	}
	long[]BIT=new long[250000];
	void update(int x, long val,int n)
	{
		x+=5;
		for(; x <= n; x += x&-x)
			BIT[x] += val;
	}
	long query(int x)
	{
		int cop=x+5;
		long sum = 0;
		for(; cop > 0; cop -= cop&-cop){
			if(cop==150000)
				x=x;
			sum += BIT[cop];

		}
		return sum;
	}
}

Compilation message

Note: shoes.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.

Subtask #1

10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	94 ms	11440 KB	Output is correct
2	Correct	97 ms	11500 KB	Output is correct

Subtask #2

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	94 ms	11440 KB	Output is correct
2	Correct	97 ms	11500 KB	Output is correct
3	Correct	94 ms	11632 KB	Output is correct
4	Correct	96 ms	11608 KB	Output is correct
5	Correct	96 ms	11588 KB	Output is correct
6	Correct	96 ms	11732 KB	Output is correct
7	Correct	92 ms	11552 KB	Output is correct
8	Correct	103 ms	11668 KB	Output is correct
9	Correct	101 ms	11532 KB	Output is correct
10	Correct	94 ms	11440 KB	Output is correct
11	Correct	93 ms	11552 KB	Output is correct
12	Correct	94 ms	11636 KB	Output is correct
13	Correct	96 ms	11700 KB	Output is correct
14	Correct	92 ms	11788 KB	Output is correct
15	Correct	92 ms	11536 KB	Output is correct
16	Correct	91 ms	11612 KB	Output is correct
17	Correct	99 ms	11404 KB	Output is correct
18	Correct	113 ms	11500 KB	Output is correct
19	Correct	92 ms	11544 KB	Output is correct
20	Correct	96 ms	11504 KB	Output is correct
21	Correct	93 ms	11628 KB	Output is correct
22	Correct	97 ms	11628 KB	Output is correct
23	Correct	91 ms	11540 KB	Output is correct
24	Correct	91 ms	11412 KB	Output is correct
25	Correct	90 ms	11536 KB	Output is correct
26	Correct	93 ms	11732 KB	Output is correct
27	Correct	96 ms	11528 KB	Output is correct
28	Correct	91 ms	11592 KB	Output is correct
29	Correct	90 ms	11336 KB	Output is correct
30	Correct	92 ms	11668 KB	Output is correct
31	Correct	157 ms	11660 KB	Output is correct
32	Correct	92 ms	11584 KB	Output is correct
33	Correct	92 ms	11780 KB	Output is correct
34	Correct	89 ms	11652 KB	Output is correct
35	Correct	96 ms	11628 KB	Output is correct
36	Correct	100 ms	11780 KB	Output is correct

Subtask #3

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	94 ms	11440 KB	Output is correct
2	Correct	97 ms	11500 KB	Output is correct
3	Correct	90 ms	11568 KB	Output is correct
4	Correct	91 ms	11696 KB	Output is correct
5	Correct	90 ms	11440 KB	Output is correct
6	Correct	94 ms	11628 KB	Output is correct
7	Correct	95 ms	11428 KB	Output is correct
8	Correct	106 ms	11516 KB	Output is correct
9	Correct	92 ms	11404 KB	Output is correct
10	Correct	93 ms	11644 KB	Output is correct
11	Correct	93 ms	11472 KB	Output is correct
12	Correct	93 ms	11328 KB	Output is correct
13	Correct	90 ms	11564 KB	Output is correct
14	Correct	93 ms	11508 KB	Output is correct
15	Correct	92 ms	11664 KB	Output is correct
16	Correct	98 ms	11732 KB	Output is correct
17	Correct	99 ms	11964 KB	Output is correct
18	Correct	109 ms	12248 KB	Output is correct
19	Correct	111 ms	12364 KB	Output is correct
20	Correct	176 ms	17848 KB	Output is correct
21	Correct	191 ms	18088 KB	Output is correct
22	Correct	616 ms	80668 KB	Output is correct
23	Correct	554 ms	81016 KB	Output is correct
24	Correct	647 ms	82068 KB	Output is correct
25	Correct	565 ms	80036 KB	Output is correct
26	Correct	542 ms	80816 KB	Output is correct
27	Correct	563 ms	80124 KB	Output is correct
28	Correct	533 ms	80092 KB	Output is correct
29	Correct	567 ms	80508 KB	Output is correct
30	Correct	636 ms	80260 KB	Output is correct
31	Correct	653 ms	82552 KB	Output is correct
32	Correct	681 ms	80228 KB	Output is correct
33	Correct	567 ms	80052 KB	Output is correct
34	Correct	603 ms	80156 KB	Output is correct
35	Correct	91 ms	11520 KB	Output is correct
36	Correct	91 ms	11732 KB	Output is correct
37	Correct	564 ms	80364 KB	Output is correct
38	Correct	538 ms	80212 KB	Output is correct
39	Correct	618 ms	79992 KB	Output is correct

Subtask #4

15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	90 ms	11588 KB	Output is correct
2	Correct	90 ms	11600 KB	Output is correct
3	Correct	87 ms	11520 KB	Output is correct
4	Correct	89 ms	11648 KB	Output is correct
5	Correct	486 ms	77820 KB	Output is correct
6	Correct	516 ms	80196 KB	Output is correct
7	Correct	507 ms	78768 KB	Output is correct
8	Correct	624 ms	80376 KB	Output is correct
9	Correct	479 ms	79024 KB	Output is correct
10	Correct	533 ms	80188 KB	Output is correct

Subtask #5

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	94 ms	11440 KB	Output is correct
2	Correct	97 ms	11500 KB	Output is correct
3	Correct	94 ms	11632 KB	Output is correct
4	Correct	96 ms	11608 KB	Output is correct
5	Correct	96 ms	11588 KB	Output is correct
6	Correct	96 ms	11732 KB	Output is correct
7	Correct	92 ms	11552 KB	Output is correct
8	Correct	103 ms	11668 KB	Output is correct
9	Correct	101 ms	11532 KB	Output is correct
10	Correct	94 ms	11440 KB	Output is correct
11	Correct	93 ms	11552 KB	Output is correct
12	Correct	94 ms	11636 KB	Output is correct
13	Correct	96 ms	11700 KB	Output is correct
14	Correct	92 ms	11788 KB	Output is correct
15	Correct	92 ms	11536 KB	Output is correct
16	Correct	91 ms	11612 KB	Output is correct
17	Correct	99 ms	11404 KB	Output is correct
18	Correct	113 ms	11500 KB	Output is correct
19	Correct	92 ms	11544 KB	Output is correct
20	Correct	96 ms	11504 KB	Output is correct
21	Correct	93 ms	11628 KB	Output is correct
22	Correct	97 ms	11628 KB	Output is correct
23	Correct	91 ms	11540 KB	Output is correct
24	Correct	91 ms	11412 KB	Output is correct
25	Correct	90 ms	11536 KB	Output is correct
26	Correct	93 ms	11732 KB	Output is correct
27	Correct	96 ms	11528 KB	Output is correct
28	Correct	91 ms	11592 KB	Output is correct
29	Correct	90 ms	11336 KB	Output is correct
30	Correct	92 ms	11668 KB	Output is correct
31	Correct	157 ms	11660 KB	Output is correct
32	Correct	92 ms	11584 KB	Output is correct
33	Correct	92 ms	11780 KB	Output is correct
34	Correct	89 ms	11652 KB	Output is correct
35	Correct	96 ms	11628 KB	Output is correct
36	Correct	100 ms	11780 KB	Output is correct
37	Correct	89 ms	11620 KB	Output is correct
38	Correct	93 ms	11744 KB	Output is correct
39	Correct	92 ms	11692 KB	Output is correct
40	Correct	96 ms	11784 KB	Output is correct
41	Correct	103 ms	12408 KB	Output is correct
42	Correct	102 ms	11980 KB	Output is correct
43	Correct	102 ms	12184 KB	Output is correct
44	Correct	103 ms	12276 KB	Output is correct
45	Correct	104 ms	12520 KB	Output is correct
46	Correct	110 ms	12380 KB	Output is correct
47	Correct	106 ms	12072 KB	Output is correct
48	Correct	107 ms	12052 KB	Output is correct
49	Correct	108 ms	12060 KB	Output is correct
50	Correct	108 ms	12504 KB	Output is correct
51	Correct	108 ms	12300 KB	Output is correct
52	Correct	114 ms	12168 KB	Output is correct

Subtask #6

15.0 / 15.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	94 ms	11440 KB	Output is correct
2	Correct	97 ms	11500 KB	Output is correct
3	Correct	94 ms	11632 KB	Output is correct
4	Correct	96 ms	11608 KB	Output is correct
5	Correct	96 ms	11588 KB	Output is correct
6	Correct	96 ms	11732 KB	Output is correct
7	Correct	92 ms	11552 KB	Output is correct
8	Correct	103 ms	11668 KB	Output is correct
9	Correct	101 ms	11532 KB	Output is correct
10	Correct	94 ms	11440 KB	Output is correct
11	Correct	93 ms	11552 KB	Output is correct
12	Correct	94 ms	11636 KB	Output is correct
13	Correct	96 ms	11700 KB	Output is correct
14	Correct	92 ms	11788 KB	Output is correct
15	Correct	92 ms	11536 KB	Output is correct
16	Correct	91 ms	11612 KB	Output is correct
17	Correct	99 ms	11404 KB	Output is correct
18	Correct	113 ms	11500 KB	Output is correct
19	Correct	92 ms	11544 KB	Output is correct
20	Correct	96 ms	11504 KB	Output is correct
21	Correct	93 ms	11628 KB	Output is correct
22	Correct	97 ms	11628 KB	Output is correct
23	Correct	91 ms	11540 KB	Output is correct
24	Correct	91 ms	11412 KB	Output is correct
25	Correct	90 ms	11536 KB	Output is correct
26	Correct	93 ms	11732 KB	Output is correct
27	Correct	96 ms	11528 KB	Output is correct
28	Correct	91 ms	11592 KB	Output is correct
29	Correct	90 ms	11336 KB	Output is correct
30	Correct	92 ms	11668 KB	Output is correct
31	Correct	157 ms	11660 KB	Output is correct
32	Correct	92 ms	11584 KB	Output is correct
33	Correct	92 ms	11780 KB	Output is correct
34	Correct	89 ms	11652 KB	Output is correct
35	Correct	96 ms	11628 KB	Output is correct
36	Correct	100 ms	11780 KB	Output is correct
37	Correct	90 ms	11568 KB	Output is correct
38	Correct	91 ms	11696 KB	Output is correct
39	Correct	90 ms	11440 KB	Output is correct
40	Correct	94 ms	11628 KB	Output is correct
41	Correct	95 ms	11428 KB	Output is correct
42	Correct	106 ms	11516 KB	Output is correct
43	Correct	92 ms	11404 KB	Output is correct
44	Correct	93 ms	11644 KB	Output is correct
45	Correct	93 ms	11472 KB	Output is correct
46	Correct	93 ms	11328 KB	Output is correct
47	Correct	90 ms	11564 KB	Output is correct
48	Correct	93 ms	11508 KB	Output is correct
49	Correct	92 ms	11664 KB	Output is correct
50	Correct	98 ms	11732 KB	Output is correct
51	Correct	99 ms	11964 KB	Output is correct
52	Correct	109 ms	12248 KB	Output is correct
53	Correct	111 ms	12364 KB	Output is correct
54	Correct	176 ms	17848 KB	Output is correct
55	Correct	191 ms	18088 KB	Output is correct
56	Correct	616 ms	80668 KB	Output is correct
57	Correct	554 ms	81016 KB	Output is correct
58	Correct	647 ms	82068 KB	Output is correct
59	Correct	565 ms	80036 KB	Output is correct
60	Correct	542 ms	80816 KB	Output is correct
61	Correct	563 ms	80124 KB	Output is correct
62	Correct	533 ms	80092 KB	Output is correct
63	Correct	567 ms	80508 KB	Output is correct
64	Correct	636 ms	80260 KB	Output is correct
65	Correct	653 ms	82552 KB	Output is correct
66	Correct	681 ms	80228 KB	Output is correct
67	Correct	567 ms	80052 KB	Output is correct
68	Correct	603 ms	80156 KB	Output is correct
69	Correct	91 ms	11520 KB	Output is correct
70	Correct	91 ms	11732 KB	Output is correct
71	Correct	564 ms	80364 KB	Output is correct
72	Correct	538 ms	80212 KB	Output is correct
73	Correct	618 ms	79992 KB	Output is correct
74	Correct	90 ms	11588 KB	Output is correct
75	Correct	90 ms	11600 KB	Output is correct
76	Correct	87 ms	11520 KB	Output is correct
77	Correct	89 ms	11648 KB	Output is correct
78	Correct	486 ms	77820 KB	Output is correct
79	Correct	516 ms	80196 KB	Output is correct
80	Correct	507 ms	78768 KB	Output is correct
81	Correct	624 ms	80376 KB	Output is correct
82	Correct	479 ms	79024 KB	Output is correct
83	Correct	533 ms	80188 KB	Output is correct
84	Correct	89 ms	11620 KB	Output is correct
85	Correct	93 ms	11744 KB	Output is correct
86	Correct	92 ms	11692 KB	Output is correct
87	Correct	96 ms	11784 KB	Output is correct
88	Correct	103 ms	12408 KB	Output is correct
89	Correct	102 ms	11980 KB	Output is correct
90	Correct	102 ms	12184 KB	Output is correct
91	Correct	103 ms	12276 KB	Output is correct
92	Correct	104 ms	12520 KB	Output is correct
93	Correct	110 ms	12380 KB	Output is correct
94	Correct	106 ms	12072 KB	Output is correct
95	Correct	107 ms	12052 KB	Output is correct
96	Correct	108 ms	12060 KB	Output is correct
97	Correct	108 ms	12504 KB	Output is correct
98	Correct	108 ms	12300 KB	Output is correct
99	Correct	114 ms	12168 KB	Output is correct
100	Correct	104 ms	12080 KB	Output is correct
101	Correct	158 ms	16976 KB	Output is correct
102	Correct	166 ms	17408 KB	Output is correct
103	Correct	478 ms	78856 KB	Output is correct
104	Correct	539 ms	78772 KB	Output is correct
105	Correct	519 ms	80700 KB	Output is correct
106	Correct	476 ms	78900 KB	Output is correct
107	Correct	583 ms	80316 KB	Output is correct
108	Correct	593 ms	80244 KB	Output is correct
109	Correct	637 ms	79900 KB	Output is correct
110	Correct	605 ms	81120 KB	Output is correct
111	Correct	553 ms	79936 KB	Output is correct
112	Correct	501 ms	80380 KB	Output is correct
113	Correct	531 ms	80020 KB	Output is correct
114	Correct	495 ms	79096 KB	Output is correct
115	Correct	512 ms	79180 KB	Output is correct