답안 #206053

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
206053	2020-03-02T04:02:55 Z	spdskatr	Arranging Shoes (IOI19_shoes)	C++14	100 / 100	131 ms	24184 KB

shoes

#include "shoes.h"
#include <vector>
#include <cstdlib>
#include <cstdio>
#define SZ (1<<18)
using namespace std;

int N, st[1<<19], claimed[1<<18];
vector<int> pos[1<<19];

void seg_set(int i, int v) {
	for (st[i += SZ] = v; i > 1; i >>= 1) {
		st[i>>1] = st[i] + st[i^1];
	}
}
int seg_sum(int l, int r) {
	int res = 0;
	for (l += SZ, r += SZ; l < r; l >>= 1, r >>= 1) {
		if (l&1) res += st[l++];
		if (r&1) res += st[--r];
	}
	return res;
}

long long count_swaps(vector<int> s) {
	long long ans = 0;
	N = (int)s.size() / 2;
	for (int i = s.size() - 1; i >= 0; i--) {
		pos[s[i] + SZ].push_back(i);
		seg_set(i, 1);
	}
	for (int i = 0; i < s.size(); i++) {
		if (!claimed[i]) {
			pos[s[i]+SZ].pop_back();
			if (s[i] < 0) {
				int otherpos = pos[-s[i]+SZ].back(); pos[-s[i]+SZ].pop_back();
				ans = (ans + seg_sum(i+1, otherpos));
				seg_set(otherpos, 0);
				claimed[otherpos] = 1;
			} else {
				int otherpos = pos[-s[i]+SZ].back(); pos[-s[i]+SZ].pop_back();
				ans = (ans + seg_sum(i, otherpos));
				seg_set(otherpos, 0);
				claimed[otherpos] = 1;
			}
		}
	}
	return ans;
}

Compilation message

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:32:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < s.size(); i++) {
                  ~~^~~~~~~~~~

Subtask #1

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	13 ms	12664 KB	Output is correct
2	Correct	13 ms	12664 KB	Output is correct

Subtask #2

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	13 ms	12664 KB	Output is correct
2	Correct	13 ms	12664 KB	Output is correct
3	Correct	13 ms	12792 KB	Output is correct
4	Correct	12 ms	12664 KB	Output is correct
5	Correct	14 ms	12664 KB	Output is correct
6	Correct	13 ms	12664 KB	Output is correct
7	Correct	14 ms	12696 KB	Output is correct
8	Correct	13 ms	12668 KB	Output is correct
9	Correct	13 ms	12664 KB	Output is correct
10	Correct	12 ms	12664 KB	Output is correct
11	Correct	12 ms	12664 KB	Output is correct
12	Correct	13 ms	12664 KB	Output is correct
13	Correct	14 ms	12664 KB	Output is correct
14	Correct	12 ms	12664 KB	Output is correct
15	Correct	13 ms	12664 KB	Output is correct
16	Correct	13 ms	12792 KB	Output is correct
17	Correct	12 ms	12664 KB	Output is correct
18	Correct	13 ms	12664 KB	Output is correct
19	Correct	13 ms	12664 KB	Output is correct
20	Correct	12 ms	12664 KB	Output is correct
21	Correct	13 ms	12664 KB	Output is correct
22	Correct	13 ms	12668 KB	Output is correct
23	Correct	12 ms	12664 KB	Output is correct
24	Correct	13 ms	12664 KB	Output is correct
25	Correct	14 ms	12792 KB	Output is correct
26	Correct	13 ms	12664 KB	Output is correct
27	Correct	13 ms	12664 KB	Output is correct
28	Correct	13 ms	12664 KB	Output is correct
29	Correct	13 ms	12664 KB	Output is correct
30	Correct	12 ms	12664 KB	Output is correct
31	Correct	13 ms	12664 KB	Output is correct
32	Correct	13 ms	12664 KB	Output is correct
33	Correct	13 ms	12664 KB	Output is correct
34	Correct	13 ms	12664 KB	Output is correct
35	Correct	13 ms	12664 KB	Output is correct
36	Correct	13 ms	12664 KB	Output is correct

Subtask #3

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	13 ms	12664 KB	Output is correct
2	Correct	13 ms	12664 KB	Output is correct
3	Correct	13 ms	12664 KB	Output is correct
4	Correct	12 ms	12664 KB	Output is correct
5	Correct	13 ms	12664 KB	Output is correct
6	Correct	13 ms	12712 KB	Output is correct
7	Correct	13 ms	12664 KB	Output is correct
8	Correct	13 ms	12664 KB	Output is correct
9	Correct	13 ms	12664 KB	Output is correct
10	Correct	13 ms	12664 KB	Output is correct
11	Correct	13 ms	12664 KB	Output is correct
12	Correct	13 ms	12664 KB	Output is correct
13	Correct	14 ms	12664 KB	Output is correct
14	Correct	13 ms	12664 KB	Output is correct
15	Correct	12 ms	12664 KB	Output is correct
16	Correct	13 ms	12664 KB	Output is correct
17	Correct	13 ms	12664 KB	Output is correct
18	Correct	14 ms	12664 KB	Output is correct
19	Correct	13 ms	12664 KB	Output is correct
20	Correct	17 ms	13332 KB	Output is correct
21	Correct	18 ms	13304 KB	Output is correct
22	Correct	58 ms	18852 KB	Output is correct
23	Correct	53 ms	18924 KB	Output is correct
24	Correct	58 ms	18712 KB	Output is correct
25	Correct	56 ms	18156 KB	Output is correct
26	Correct	62 ms	18796 KB	Output is correct
27	Correct	50 ms	18672 KB	Output is correct
28	Correct	57 ms	18416 KB	Output is correct
29	Correct	55 ms	18416 KB	Output is correct
30	Correct	57 ms	18412 KB	Output is correct
31	Correct	58 ms	18816 KB	Output is correct
32	Correct	55 ms	18416 KB	Output is correct
33	Correct	55 ms	18160 KB	Output is correct
34	Correct	56 ms	18416 KB	Output is correct
35	Correct	13 ms	12664 KB	Output is correct
36	Correct	13 ms	12792 KB	Output is correct
37	Correct	57 ms	18392 KB	Output is correct
38	Correct	57 ms	18416 KB	Output is correct
39	Correct	57 ms	18540 KB	Output is correct

Subtask #4

15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	13 ms	12664 KB	Output is correct
2	Correct	12 ms	12664 KB	Output is correct
3	Correct	12 ms	12664 KB	Output is correct
4	Correct	14 ms	12664 KB	Output is correct
5	Correct	88 ms	23672 KB	Output is correct
6	Correct	79 ms	18936 KB	Output is correct
7	Correct	89 ms	23672 KB	Output is correct
8	Correct	59 ms	18356 KB	Output is correct
9	Correct	92 ms	23672 KB	Output is correct
10	Correct	90 ms	20600 KB	Output is correct

Subtask #5

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	13 ms	12664 KB	Output is correct
2	Correct	13 ms	12664 KB	Output is correct
3	Correct	13 ms	12792 KB	Output is correct
4	Correct	12 ms	12664 KB	Output is correct
5	Correct	14 ms	12664 KB	Output is correct
6	Correct	13 ms	12664 KB	Output is correct
7	Correct	14 ms	12696 KB	Output is correct
8	Correct	13 ms	12668 KB	Output is correct
9	Correct	13 ms	12664 KB	Output is correct
10	Correct	12 ms	12664 KB	Output is correct
11	Correct	12 ms	12664 KB	Output is correct
12	Correct	13 ms	12664 KB	Output is correct
13	Correct	14 ms	12664 KB	Output is correct
14	Correct	12 ms	12664 KB	Output is correct
15	Correct	13 ms	12664 KB	Output is correct
16	Correct	13 ms	12792 KB	Output is correct
17	Correct	12 ms	12664 KB	Output is correct
18	Correct	13 ms	12664 KB	Output is correct
19	Correct	13 ms	12664 KB	Output is correct
20	Correct	12 ms	12664 KB	Output is correct
21	Correct	13 ms	12664 KB	Output is correct
22	Correct	13 ms	12668 KB	Output is correct
23	Correct	12 ms	12664 KB	Output is correct
24	Correct	13 ms	12664 KB	Output is correct
25	Correct	14 ms	12792 KB	Output is correct
26	Correct	13 ms	12664 KB	Output is correct
27	Correct	13 ms	12664 KB	Output is correct
28	Correct	13 ms	12664 KB	Output is correct
29	Correct	13 ms	12664 KB	Output is correct
30	Correct	12 ms	12664 KB	Output is correct
31	Correct	13 ms	12664 KB	Output is correct
32	Correct	13 ms	12664 KB	Output is correct
33	Correct	13 ms	12664 KB	Output is correct
34	Correct	13 ms	12664 KB	Output is correct
35	Correct	13 ms	12664 KB	Output is correct
36	Correct	13 ms	12664 KB	Output is correct
37	Correct	13 ms	12664 KB	Output is correct
38	Correct	12 ms	12664 KB	Output is correct
39	Correct	13 ms	12664 KB	Output is correct
40	Correct	13 ms	12664 KB	Output is correct
41	Correct	13 ms	12792 KB	Output is correct
42	Correct	13 ms	12792 KB	Output is correct
43	Correct	13 ms	12792 KB	Output is correct
44	Correct	13 ms	12792 KB	Output is correct
45	Correct	13 ms	12792 KB	Output is correct
46	Correct	14 ms	12792 KB	Output is correct
47	Correct	13 ms	12792 KB	Output is correct
48	Correct	15 ms	12668 KB	Output is correct
49	Correct	14 ms	12664 KB	Output is correct
50	Correct	15 ms	12792 KB	Output is correct
51	Correct	13 ms	12664 KB	Output is correct
52	Correct	13 ms	12792 KB	Output is correct

Subtask #6

15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	13 ms	12664 KB	Output is correct
2	Correct	13 ms	12664 KB	Output is correct
3	Correct	13 ms	12792 KB	Output is correct
4	Correct	12 ms	12664 KB	Output is correct
5	Correct	14 ms	12664 KB	Output is correct
6	Correct	13 ms	12664 KB	Output is correct
7	Correct	14 ms	12696 KB	Output is correct
8	Correct	13 ms	12668 KB	Output is correct
9	Correct	13 ms	12664 KB	Output is correct
10	Correct	12 ms	12664 KB	Output is correct
11	Correct	12 ms	12664 KB	Output is correct
12	Correct	13 ms	12664 KB	Output is correct
13	Correct	14 ms	12664 KB	Output is correct
14	Correct	12 ms	12664 KB	Output is correct
15	Correct	13 ms	12664 KB	Output is correct
16	Correct	13 ms	12792 KB	Output is correct
17	Correct	12 ms	12664 KB	Output is correct
18	Correct	13 ms	12664 KB	Output is correct
19	Correct	13 ms	12664 KB	Output is correct
20	Correct	12 ms	12664 KB	Output is correct
21	Correct	13 ms	12664 KB	Output is correct
22	Correct	13 ms	12668 KB	Output is correct
23	Correct	12 ms	12664 KB	Output is correct
24	Correct	13 ms	12664 KB	Output is correct
25	Correct	14 ms	12792 KB	Output is correct
26	Correct	13 ms	12664 KB	Output is correct
27	Correct	13 ms	12664 KB	Output is correct
28	Correct	13 ms	12664 KB	Output is correct
29	Correct	13 ms	12664 KB	Output is correct
30	Correct	12 ms	12664 KB	Output is correct
31	Correct	13 ms	12664 KB	Output is correct
32	Correct	13 ms	12664 KB	Output is correct
33	Correct	13 ms	12664 KB	Output is correct
34	Correct	13 ms	12664 KB	Output is correct
35	Correct	13 ms	12664 KB	Output is correct
36	Correct	13 ms	12664 KB	Output is correct
37	Correct	13 ms	12664 KB	Output is correct
38	Correct	12 ms	12664 KB	Output is correct
39	Correct	13 ms	12664 KB	Output is correct
40	Correct	13 ms	12712 KB	Output is correct
41	Correct	13 ms	12664 KB	Output is correct
42	Correct	13 ms	12664 KB	Output is correct
43	Correct	13 ms	12664 KB	Output is correct
44	Correct	13 ms	12664 KB	Output is correct
45	Correct	13 ms	12664 KB	Output is correct
46	Correct	13 ms	12664 KB	Output is correct
47	Correct	14 ms	12664 KB	Output is correct
48	Correct	13 ms	12664 KB	Output is correct
49	Correct	12 ms	12664 KB	Output is correct
50	Correct	13 ms	12664 KB	Output is correct
51	Correct	13 ms	12664 KB	Output is correct
52	Correct	14 ms	12664 KB	Output is correct
53	Correct	13 ms	12664 KB	Output is correct
54	Correct	17 ms	13332 KB	Output is correct
55	Correct	18 ms	13304 KB	Output is correct
56	Correct	58 ms	18852 KB	Output is correct
57	Correct	53 ms	18924 KB	Output is correct
58	Correct	58 ms	18712 KB	Output is correct
59	Correct	56 ms	18156 KB	Output is correct
60	Correct	62 ms	18796 KB	Output is correct
61	Correct	50 ms	18672 KB	Output is correct
62	Correct	57 ms	18416 KB	Output is correct
63	Correct	55 ms	18416 KB	Output is correct
64	Correct	57 ms	18412 KB	Output is correct
65	Correct	58 ms	18816 KB	Output is correct
66	Correct	55 ms	18416 KB	Output is correct
67	Correct	55 ms	18160 KB	Output is correct
68	Correct	56 ms	18416 KB	Output is correct
69	Correct	13 ms	12664 KB	Output is correct
70	Correct	13 ms	12792 KB	Output is correct
71	Correct	57 ms	18392 KB	Output is correct
72	Correct	57 ms	18416 KB	Output is correct
73	Correct	57 ms	18540 KB	Output is correct
74	Correct	13 ms	12664 KB	Output is correct
75	Correct	12 ms	12664 KB	Output is correct
76	Correct	12 ms	12664 KB	Output is correct
77	Correct	14 ms	12664 KB	Output is correct
78	Correct	88 ms	23672 KB	Output is correct
79	Correct	79 ms	18936 KB	Output is correct
80	Correct	89 ms	23672 KB	Output is correct
81	Correct	59 ms	18356 KB	Output is correct
82	Correct	92 ms	23672 KB	Output is correct
83	Correct	90 ms	20600 KB	Output is correct
84	Correct	13 ms	12664 KB	Output is correct
85	Correct	12 ms	12664 KB	Output is correct
86	Correct	13 ms	12664 KB	Output is correct
87	Correct	13 ms	12664 KB	Output is correct
88	Correct	13 ms	12792 KB	Output is correct
89	Correct	13 ms	12792 KB	Output is correct
90	Correct	13 ms	12792 KB	Output is correct
91	Correct	13 ms	12792 KB	Output is correct
92	Correct	13 ms	12792 KB	Output is correct
93	Correct	14 ms	12792 KB	Output is correct
94	Correct	13 ms	12792 KB	Output is correct
95	Correct	15 ms	12668 KB	Output is correct
96	Correct	14 ms	12664 KB	Output is correct
97	Correct	15 ms	12792 KB	Output is correct
98	Correct	13 ms	12664 KB	Output is correct
99	Correct	13 ms	12792 KB	Output is correct
100	Correct	13 ms	12792 KB	Output is correct
101	Correct	20 ms	13688 KB	Output is correct
102	Correct	19 ms	13304 KB	Output is correct
103	Correct	131 ms	24184 KB	Output is correct
104	Correct	97 ms	24056 KB	Output is correct
105	Correct	114 ms	21372 KB	Output is correct
106	Correct	87 ms	23676 KB	Output is correct
107	Correct	89 ms	19448 KB	Output is correct
108	Correct	88 ms	19960 KB	Output is correct
109	Correct	58 ms	18480 KB	Output is correct
110	Correct	56 ms	18416 KB	Output is correct
111	Correct	89 ms	23032 KB	Output is correct
112	Correct	115 ms	22648 KB	Output is correct
113	Correct	93 ms	19064 KB	Output is correct
114	Correct	88 ms	23648 KB	Output is correct
115	Correct	95 ms	23748 KB	Output is correct