답안 #159298

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
159298	2019-10-22T07:03:12 Z	maximath_1	Arranging Shoes (IOI19_shoes)	C++14	100 / 100	99 ms	15516 KB

shoes

#include "shoes.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll mxn=200069;
ll fw[mxn];
void add(ll x, ll val){
	for(ll i=x; i<mxn; i+=i&-i) fw[i]+=val;
}
ll que(ll x){
	ll r=0ll;
	for(ll i=x; i>0; i-=i&-i) r+=fw[i];
	return r;
}
ll count_swaps(vector<int>S){
	ll n=S.size()/2, res=0;
	vector<pair<ll, ll> >swp, grp[mxn];
	for(ll i=0; i<2*n; i++) grp[abs(S[i])].push_back({S[i], i});
	for(int i=1; i<=n; i++){
		sort(grp[i].begin(), grp[i].end());
		int num=grp[i].size()/2;
		for(int j=0; j<num; j++){
			int l=grp[i][j].second, r=grp[i][j+num].second;
			if(l>r){swap(l, r); res++;}
			swp.push_back({l+1, r+1});
		}
	}
	sort(swp.begin(), swp.end());
	for(int i=1; i<=2*n; i++) add(i, 1);
	for(int i=0; i<swp.size(); i++){
		res+=que(swp[i].second-1)-que(swp[i].first);
		add(swp[i].first, -1); add(swp[i].second, -1);
	}
	return res;
}

Compilation message

shoes.cpp: In function 'll count_swaps(std::vector<int>)':
shoes.cpp:30:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<swp.size(); i++){
               ~^~~~~~~~~~~

Subtask #1

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	5112 KB	Output is correct
2	Correct	6 ms	4984 KB	Output is correct

Subtask #2

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	5112 KB	Output is correct
2	Correct	6 ms	4984 KB	Output is correct
3	Correct	6 ms	5112 KB	Output is correct
4	Correct	6 ms	4984 KB	Output is correct
5	Correct	6 ms	4984 KB	Output is correct
6	Correct	6 ms	5112 KB	Output is correct
7	Correct	6 ms	4984 KB	Output is correct
8	Correct	7 ms	5116 KB	Output is correct
9	Correct	6 ms	5112 KB	Output is correct
10	Correct	7 ms	4984 KB	Output is correct
11	Correct	7 ms	5112 KB	Output is correct
12	Correct	7 ms	5112 KB	Output is correct
13	Correct	6 ms	5116 KB	Output is correct
14	Correct	6 ms	5112 KB	Output is correct
15	Correct	6 ms	5112 KB	Output is correct
16	Correct	6 ms	5112 KB	Output is correct
17	Correct	6 ms	4984 KB	Output is correct
18	Correct	6 ms	5116 KB	Output is correct
19	Correct	6 ms	5060 KB	Output is correct
20	Correct	6 ms	5116 KB	Output is correct
21	Correct	6 ms	5112 KB	Output is correct
22	Correct	6 ms	5112 KB	Output is correct
23	Correct	6 ms	5112 KB	Output is correct
24	Correct	6 ms	4984 KB	Output is correct
25	Correct	6 ms	5112 KB	Output is correct
26	Correct	6 ms	5140 KB	Output is correct
27	Correct	6 ms	5112 KB	Output is correct
28	Correct	6 ms	4984 KB	Output is correct
29	Correct	6 ms	5116 KB	Output is correct
30	Correct	6 ms	5112 KB	Output is correct
31	Correct	6 ms	5112 KB	Output is correct
32	Correct	6 ms	5112 KB	Output is correct
33	Correct	6 ms	5084 KB	Output is correct
34	Correct	6 ms	5112 KB	Output is correct
35	Correct	6 ms	4968 KB	Output is correct
36	Correct	6 ms	5112 KB	Output is correct

Subtask #3

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	5112 KB	Output is correct
2	Correct	6 ms	4984 KB	Output is correct
3	Correct	6 ms	4984 KB	Output is correct
4	Correct	6 ms	4984 KB	Output is correct
5	Correct	6 ms	4984 KB	Output is correct
6	Correct	6 ms	4984 KB	Output is correct
7	Correct	6 ms	4988 KB	Output is correct
8	Correct	6 ms	5112 KB	Output is correct
9	Correct	6 ms	5112 KB	Output is correct
10	Correct	6 ms	5112 KB	Output is correct
11	Correct	6 ms	5112 KB	Output is correct
12	Correct	6 ms	5112 KB	Output is correct
13	Correct	6 ms	5112 KB	Output is correct
14	Correct	6 ms	4984 KB	Output is correct
15	Correct	6 ms	4984 KB	Output is correct
16	Correct	6 ms	4984 KB	Output is correct
17	Correct	6 ms	5112 KB	Output is correct
18	Correct	7 ms	5112 KB	Output is correct
19	Correct	7 ms	5112 KB	Output is correct
20	Correct	13 ms	6256 KB	Output is correct
21	Correct	13 ms	6128 KB	Output is correct
22	Correct	71 ms	15328 KB	Output is correct
23	Correct	62 ms	15328 KB	Output is correct
24	Correct	76 ms	15328 KB	Output is correct
25	Correct	59 ms	15328 KB	Output is correct
26	Correct	73 ms	15456 KB	Output is correct
27	Correct	61 ms	15252 KB	Output is correct
28	Correct	61 ms	15332 KB	Output is correct
29	Correct	61 ms	15316 KB	Output is correct
30	Correct	61 ms	15332 KB	Output is correct
31	Correct	73 ms	15332 KB	Output is correct
32	Correct	62 ms	15328 KB	Output is correct
33	Correct	64 ms	15328 KB	Output is correct
34	Correct	60 ms	15332 KB	Output is correct
35	Correct	6 ms	5112 KB	Output is correct
36	Correct	6 ms	5112 KB	Output is correct
37	Correct	61 ms	15328 KB	Output is correct
38	Correct	63 ms	15360 KB	Output is correct
39	Correct	62 ms	15332 KB	Output is correct

Subtask #4

15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	4984 KB	Output is correct
2	Correct	6 ms	4984 KB	Output is correct
3	Correct	6 ms	4984 KB	Output is correct
4	Correct	6 ms	5112 KB	Output is correct
5	Correct	90 ms	15100 KB	Output is correct
6	Correct	78 ms	14932 KB	Output is correct
7	Correct	89 ms	14972 KB	Output is correct
8	Correct	68 ms	15516 KB	Output is correct
9	Correct	89 ms	14972 KB	Output is correct
10	Correct	90 ms	14824 KB	Output is correct

Subtask #5

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	5112 KB	Output is correct
2	Correct	6 ms	4984 KB	Output is correct
3	Correct	6 ms	5112 KB	Output is correct
4	Correct	6 ms	4984 KB	Output is correct
5	Correct	6 ms	4984 KB	Output is correct
6	Correct	6 ms	5112 KB	Output is correct
7	Correct	6 ms	4984 KB	Output is correct
8	Correct	7 ms	5116 KB	Output is correct
9	Correct	6 ms	5112 KB	Output is correct
10	Correct	7 ms	4984 KB	Output is correct
11	Correct	7 ms	5112 KB	Output is correct
12	Correct	7 ms	5112 KB	Output is correct
13	Correct	6 ms	5116 KB	Output is correct
14	Correct	6 ms	5112 KB	Output is correct
15	Correct	6 ms	5112 KB	Output is correct
16	Correct	6 ms	5112 KB	Output is correct
17	Correct	6 ms	4984 KB	Output is correct
18	Correct	6 ms	5116 KB	Output is correct
19	Correct	6 ms	5060 KB	Output is correct
20	Correct	6 ms	5116 KB	Output is correct
21	Correct	6 ms	5112 KB	Output is correct
22	Correct	6 ms	5112 KB	Output is correct
23	Correct	6 ms	5112 KB	Output is correct
24	Correct	6 ms	4984 KB	Output is correct
25	Correct	6 ms	5112 KB	Output is correct
26	Correct	6 ms	5140 KB	Output is correct
27	Correct	6 ms	5112 KB	Output is correct
28	Correct	6 ms	4984 KB	Output is correct
29	Correct	6 ms	5116 KB	Output is correct
30	Correct	6 ms	5112 KB	Output is correct
31	Correct	6 ms	5112 KB	Output is correct
32	Correct	6 ms	5112 KB	Output is correct
33	Correct	6 ms	5084 KB	Output is correct
34	Correct	6 ms	5112 KB	Output is correct
35	Correct	6 ms	4968 KB	Output is correct
36	Correct	6 ms	5112 KB	Output is correct
37	Correct	6 ms	5112 KB	Output is correct
38	Correct	6 ms	4984 KB	Output is correct
39	Correct	6 ms	4984 KB	Output is correct
40	Correct	6 ms	5112 KB	Output is correct
41	Correct	7 ms	5240 KB	Output is correct
42	Correct	6 ms	5112 KB	Output is correct
43	Correct	6 ms	5240 KB	Output is correct
44	Correct	6 ms	5240 KB	Output is correct
45	Correct	7 ms	5112 KB	Output is correct
46	Correct	6 ms	5116 KB	Output is correct
47	Correct	6 ms	5112 KB	Output is correct
48	Correct	7 ms	5116 KB	Output is correct
49	Correct	6 ms	5132 KB	Output is correct
50	Correct	6 ms	5112 KB	Output is correct
51	Correct	6 ms	5112 KB	Output is correct
52	Correct	7 ms	5112 KB	Output is correct

Subtask #6

15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	6 ms	5112 KB	Output is correct
2	Correct	6 ms	4984 KB	Output is correct
3	Correct	6 ms	5112 KB	Output is correct
4	Correct	6 ms	4984 KB	Output is correct
5	Correct	6 ms	4984 KB	Output is correct
6	Correct	6 ms	5112 KB	Output is correct
7	Correct	6 ms	4984 KB	Output is correct
8	Correct	7 ms	5116 KB	Output is correct
9	Correct	6 ms	5112 KB	Output is correct
10	Correct	7 ms	4984 KB	Output is correct
11	Correct	7 ms	5112 KB	Output is correct
12	Correct	7 ms	5112 KB	Output is correct
13	Correct	6 ms	5116 KB	Output is correct
14	Correct	6 ms	5112 KB	Output is correct
15	Correct	6 ms	5112 KB	Output is correct
16	Correct	6 ms	5112 KB	Output is correct
17	Correct	6 ms	4984 KB	Output is correct
18	Correct	6 ms	5116 KB	Output is correct
19	Correct	6 ms	5060 KB	Output is correct
20	Correct	6 ms	5116 KB	Output is correct
21	Correct	6 ms	5112 KB	Output is correct
22	Correct	6 ms	5112 KB	Output is correct
23	Correct	6 ms	5112 KB	Output is correct
24	Correct	6 ms	4984 KB	Output is correct
25	Correct	6 ms	5112 KB	Output is correct
26	Correct	6 ms	5140 KB	Output is correct
27	Correct	6 ms	5112 KB	Output is correct
28	Correct	6 ms	4984 KB	Output is correct
29	Correct	6 ms	5116 KB	Output is correct
30	Correct	6 ms	5112 KB	Output is correct
31	Correct	6 ms	5112 KB	Output is correct
32	Correct	6 ms	5112 KB	Output is correct
33	Correct	6 ms	5084 KB	Output is correct
34	Correct	6 ms	5112 KB	Output is correct
35	Correct	6 ms	4968 KB	Output is correct
36	Correct	6 ms	5112 KB	Output is correct
37	Correct	6 ms	4984 KB	Output is correct
38	Correct	6 ms	4984 KB	Output is correct
39	Correct	6 ms	4984 KB	Output is correct
40	Correct	6 ms	4984 KB	Output is correct
41	Correct	6 ms	4988 KB	Output is correct
42	Correct	6 ms	5112 KB	Output is correct
43	Correct	6 ms	5112 KB	Output is correct
44	Correct	6 ms	5112 KB	Output is correct
45	Correct	6 ms	5112 KB	Output is correct
46	Correct	6 ms	5112 KB	Output is correct
47	Correct	6 ms	5112 KB	Output is correct
48	Correct	6 ms	4984 KB	Output is correct
49	Correct	6 ms	4984 KB	Output is correct
50	Correct	6 ms	4984 KB	Output is correct
51	Correct	6 ms	5112 KB	Output is correct
52	Correct	7 ms	5112 KB	Output is correct
53	Correct	7 ms	5112 KB	Output is correct
54	Correct	13 ms	6256 KB	Output is correct
55	Correct	13 ms	6128 KB	Output is correct
56	Correct	71 ms	15328 KB	Output is correct
57	Correct	62 ms	15328 KB	Output is correct
58	Correct	76 ms	15328 KB	Output is correct
59	Correct	59 ms	15328 KB	Output is correct
60	Correct	73 ms	15456 KB	Output is correct
61	Correct	61 ms	15252 KB	Output is correct
62	Correct	61 ms	15332 KB	Output is correct
63	Correct	61 ms	15316 KB	Output is correct
64	Correct	61 ms	15332 KB	Output is correct
65	Correct	73 ms	15332 KB	Output is correct
66	Correct	62 ms	15328 KB	Output is correct
67	Correct	64 ms	15328 KB	Output is correct
68	Correct	60 ms	15332 KB	Output is correct
69	Correct	6 ms	5112 KB	Output is correct
70	Correct	6 ms	5112 KB	Output is correct
71	Correct	61 ms	15328 KB	Output is correct
72	Correct	63 ms	15360 KB	Output is correct
73	Correct	62 ms	15332 KB	Output is correct
74	Correct	6 ms	4984 KB	Output is correct
75	Correct	6 ms	4984 KB	Output is correct
76	Correct	6 ms	4984 KB	Output is correct
77	Correct	6 ms	5112 KB	Output is correct
78	Correct	90 ms	15100 KB	Output is correct
79	Correct	78 ms	14932 KB	Output is correct
80	Correct	89 ms	14972 KB	Output is correct
81	Correct	68 ms	15516 KB	Output is correct
82	Correct	89 ms	14972 KB	Output is correct
83	Correct	90 ms	14824 KB	Output is correct
84	Correct	6 ms	5112 KB	Output is correct
85	Correct	6 ms	4984 KB	Output is correct
86	Correct	6 ms	4984 KB	Output is correct
87	Correct	6 ms	5112 KB	Output is correct
88	Correct	7 ms	5240 KB	Output is correct
89	Correct	6 ms	5112 KB	Output is correct
90	Correct	6 ms	5240 KB	Output is correct
91	Correct	6 ms	5240 KB	Output is correct
92	Correct	7 ms	5112 KB	Output is correct
93	Correct	6 ms	5116 KB	Output is correct
94	Correct	6 ms	5112 KB	Output is correct
95	Correct	7 ms	5116 KB	Output is correct
96	Correct	6 ms	5132 KB	Output is correct
97	Correct	6 ms	5112 KB	Output is correct
98	Correct	6 ms	5112 KB	Output is correct
99	Correct	7 ms	5112 KB	Output is correct
100	Correct	7 ms	5240 KB	Output is correct
101	Correct	15 ms	6264 KB	Output is correct
102	Correct	15 ms	6272 KB	Output is correct
103	Correct	99 ms	15464 KB	Output is correct
104	Correct	98 ms	14956 KB	Output is correct
105	Correct	89 ms	14700 KB	Output is correct
106	Correct	91 ms	14980 KB	Output is correct
107	Correct	78 ms	14824 KB	Output is correct
108	Correct	75 ms	14828 KB	Output is correct
109	Correct	69 ms	15324 KB	Output is correct
110	Correct	60 ms	15328 KB	Output is correct
111	Correct	94 ms	15324 KB	Output is correct
112	Correct	95 ms	14924 KB	Output is correct
113	Correct	80 ms	15212 KB	Output is correct
114	Correct	89 ms	14972 KB	Output is correct
115	Correct	86 ms	14972 KB	Output is correct