답안 #422946

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
422946	2021-06-10T14:34:21 Z	donentseto	Arranging Shoes (IOI19_shoes)	C++14	100 / 100	168 ms	139360 KB

shoes

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

const int maxn = 200005;
int n;
int paired [maxn];
queue <int> q [maxn];

int fenwick [maxn];
void upd (int x){
	while (x <= n){
		fenwick [x] ++;
		x += x & -x;
	}
}
int query (int x){
	int ans = 0;
	while (x > 0){
		ans += fenwick [x];
		x -= x & -x;
	}
	return ans;
}

long long count_swaps (vector <int> a){

	n = a.size ();
	long long ans = 0;
	for (int i = 0; i < n; i ++){
		int size = abs (a [i]);
		if (q [size].empty () || a [q [size].front ()] == a [i]) q [size].push (i);
		else{
			paired [q [size].front ()] = i;
			paired [i] = -1;
			if (a [i] < 0) ans ++;
			q [size].pop ();
		}
	}
	int cnt = 0;
	for (int i = 0; i < n; i ++){
		if (paired [i] == -1) continue;
		ans += cnt * 2;
		ans -= query (paired [i]);
		ans -= query (i);
		upd (paired [i]);
		cnt ++;
	}
	return ans;

}

//int main (){

	//cout << count_swaps ({2, 1, -1, -2}) << '\n';

//}

Subtask #1

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	102 ms	134852 KB	Output is correct
2	Correct	101 ms	134856 KB	Output is correct

Subtask #2

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	102 ms	134852 KB	Output is correct
2	Correct	101 ms	134856 KB	Output is correct
3	Correct	99 ms	134828 KB	Output is correct
4	Correct	111 ms	134848 KB	Output is correct
5	Correct	98 ms	134884 KB	Output is correct
6	Correct	101 ms	134880 KB	Output is correct
7	Correct	99 ms	134852 KB	Output is correct
8	Correct	99 ms	134924 KB	Output is correct
9	Correct	101 ms	134864 KB	Output is correct
10	Correct	111 ms	134832 KB	Output is correct
11	Correct	104 ms	134808 KB	Output is correct
12	Correct	105 ms	134920 KB	Output is correct
13	Correct	126 ms	134848 KB	Output is correct
14	Correct	113 ms	134852 KB	Output is correct
15	Correct	112 ms	134832 KB	Output is correct
16	Correct	107 ms	135000 KB	Output is correct
17	Correct	100 ms	134928 KB	Output is correct
18	Correct	100 ms	134852 KB	Output is correct
19	Correct	99 ms	134920 KB	Output is correct
20	Correct	99 ms	134896 KB	Output is correct
21	Correct	101 ms	134852 KB	Output is correct
22	Correct	104 ms	134852 KB	Output is correct
23	Correct	101 ms	134860 KB	Output is correct
24	Correct	99 ms	134912 KB	Output is correct
25	Correct	98 ms	134852 KB	Output is correct
26	Correct	99 ms	134916 KB	Output is correct
27	Correct	116 ms	134820 KB	Output is correct
28	Correct	108 ms	134944 KB	Output is correct
29	Correct	101 ms	134828 KB	Output is correct
30	Correct	98 ms	134852 KB	Output is correct
31	Correct	108 ms	135112 KB	Output is correct
32	Correct	100 ms	134848 KB	Output is correct
33	Correct	98 ms	134892 KB	Output is correct
34	Correct	98 ms	134856 KB	Output is correct
35	Correct	98 ms	134876 KB	Output is correct
36	Correct	104 ms	134836 KB	Output is correct

Subtask #3

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	102 ms	134852 KB	Output is correct
2	Correct	101 ms	134856 KB	Output is correct
3	Correct	118 ms	134852 KB	Output is correct
4	Correct	100 ms	134804 KB	Output is correct
5	Correct	97 ms	134884 KB	Output is correct
6	Correct	100 ms	134864 KB	Output is correct
7	Correct	105 ms	134856 KB	Output is correct
8	Correct	102 ms	134848 KB	Output is correct
9	Correct	101 ms	134928 KB	Output is correct
10	Correct	100 ms	134820 KB	Output is correct
11	Correct	120 ms	134804 KB	Output is correct
12	Correct	104 ms	134876 KB	Output is correct
13	Correct	102 ms	134920 KB	Output is correct
14	Correct	100 ms	134920 KB	Output is correct
15	Correct	103 ms	134880 KB	Output is correct
16	Correct	102 ms	134912 KB	Output is correct
17	Correct	121 ms	134852 KB	Output is correct
18	Correct	98 ms	134952 KB	Output is correct
19	Correct	98 ms	134852 KB	Output is correct
20	Correct	104 ms	135332 KB	Output is correct
21	Correct	119 ms	135360 KB	Output is correct
22	Correct	136 ms	139360 KB	Output is correct
23	Correct	129 ms	139304 KB	Output is correct
24	Correct	135 ms	139252 KB	Output is correct
25	Correct	134 ms	139076 KB	Output is correct
26	Correct	132 ms	137996 KB	Output is correct
27	Correct	132 ms	137952 KB	Output is correct
28	Correct	142 ms	138020 KB	Output is correct
29	Correct	139 ms	137996 KB	Output is correct
30	Correct	134 ms	138004 KB	Output is correct
31	Correct	135 ms	138052 KB	Output is correct
32	Correct	134 ms	138060 KB	Output is correct
33	Correct	134 ms	138084 KB	Output is correct
34	Correct	136 ms	138016 KB	Output is correct
35	Correct	98 ms	134864 KB	Output is correct
36	Correct	98 ms	134928 KB	Output is correct
37	Correct	133 ms	138084 KB	Output is correct
38	Correct	133 ms	138080 KB	Output is correct
39	Correct	137 ms	138052 KB	Output is correct

Subtask #4

15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	103 ms	134852 KB	Output is correct
2	Correct	103 ms	134832 KB	Output is correct
3	Correct	100 ms	134808 KB	Output is correct
4	Correct	101 ms	134980 KB	Output is correct
5	Correct	159 ms	137596 KB	Output is correct
6	Correct	143 ms	137544 KB	Output is correct
7	Correct	165 ms	137644 KB	Output is correct
8	Correct	139 ms	138080 KB	Output is correct
9	Correct	160 ms	137832 KB	Output is correct
10	Correct	159 ms	137644 KB	Output is correct

Subtask #5

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	102 ms	134852 KB	Output is correct
2	Correct	101 ms	134856 KB	Output is correct
3	Correct	99 ms	134828 KB	Output is correct
4	Correct	111 ms	134848 KB	Output is correct
5	Correct	98 ms	134884 KB	Output is correct
6	Correct	101 ms	134880 KB	Output is correct
7	Correct	99 ms	134852 KB	Output is correct
8	Correct	99 ms	134924 KB	Output is correct
9	Correct	101 ms	134864 KB	Output is correct
10	Correct	111 ms	134832 KB	Output is correct
11	Correct	104 ms	134808 KB	Output is correct
12	Correct	105 ms	134920 KB	Output is correct
13	Correct	126 ms	134848 KB	Output is correct
14	Correct	113 ms	134852 KB	Output is correct
15	Correct	112 ms	134832 KB	Output is correct
16	Correct	107 ms	135000 KB	Output is correct
17	Correct	100 ms	134928 KB	Output is correct
18	Correct	100 ms	134852 KB	Output is correct
19	Correct	99 ms	134920 KB	Output is correct
20	Correct	99 ms	134896 KB	Output is correct
21	Correct	101 ms	134852 KB	Output is correct
22	Correct	104 ms	134852 KB	Output is correct
23	Correct	101 ms	134860 KB	Output is correct
24	Correct	99 ms	134912 KB	Output is correct
25	Correct	98 ms	134852 KB	Output is correct
26	Correct	99 ms	134916 KB	Output is correct
27	Correct	116 ms	134820 KB	Output is correct
28	Correct	108 ms	134944 KB	Output is correct
29	Correct	101 ms	134828 KB	Output is correct
30	Correct	98 ms	134852 KB	Output is correct
31	Correct	108 ms	135112 KB	Output is correct
32	Correct	100 ms	134848 KB	Output is correct
33	Correct	98 ms	134892 KB	Output is correct
34	Correct	98 ms	134856 KB	Output is correct
35	Correct	98 ms	134876 KB	Output is correct
36	Correct	104 ms	134836 KB	Output is correct
37	Correct	102 ms	134948 KB	Output is correct
38	Correct	103 ms	134852 KB	Output is correct
39	Correct	98 ms	134936 KB	Output is correct
40	Correct	102 ms	134880 KB	Output is correct
41	Correct	103 ms	134936 KB	Output is correct
42	Correct	102 ms	134856 KB	Output is correct
43	Correct	102 ms	134892 KB	Output is correct
44	Correct	97 ms	134880 KB	Output is correct
45	Correct	99 ms	134860 KB	Output is correct
46	Correct	100 ms	134848 KB	Output is correct
47	Correct	100 ms	134944 KB	Output is correct
48	Correct	101 ms	134912 KB	Output is correct
49	Correct	100 ms	134876 KB	Output is correct
50	Correct	102 ms	134884 KB	Output is correct
51	Correct	101 ms	134904 KB	Output is correct
52	Correct	99 ms	134896 KB	Output is correct

Subtask #6

15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	102 ms	134852 KB	Output is correct
2	Correct	101 ms	134856 KB	Output is correct
3	Correct	99 ms	134828 KB	Output is correct
4	Correct	111 ms	134848 KB	Output is correct
5	Correct	98 ms	134884 KB	Output is correct
6	Correct	101 ms	134880 KB	Output is correct
7	Correct	99 ms	134852 KB	Output is correct
8	Correct	99 ms	134924 KB	Output is correct
9	Correct	101 ms	134864 KB	Output is correct
10	Correct	111 ms	134832 KB	Output is correct
11	Correct	104 ms	134808 KB	Output is correct
12	Correct	105 ms	134920 KB	Output is correct
13	Correct	126 ms	134848 KB	Output is correct
14	Correct	113 ms	134852 KB	Output is correct
15	Correct	112 ms	134832 KB	Output is correct
16	Correct	107 ms	135000 KB	Output is correct
17	Correct	100 ms	134928 KB	Output is correct
18	Correct	100 ms	134852 KB	Output is correct
19	Correct	99 ms	134920 KB	Output is correct
20	Correct	99 ms	134896 KB	Output is correct
21	Correct	101 ms	134852 KB	Output is correct
22	Correct	104 ms	134852 KB	Output is correct
23	Correct	101 ms	134860 KB	Output is correct
24	Correct	99 ms	134912 KB	Output is correct
25	Correct	98 ms	134852 KB	Output is correct
26	Correct	99 ms	134916 KB	Output is correct
27	Correct	116 ms	134820 KB	Output is correct
28	Correct	108 ms	134944 KB	Output is correct
29	Correct	101 ms	134828 KB	Output is correct
30	Correct	98 ms	134852 KB	Output is correct
31	Correct	108 ms	135112 KB	Output is correct
32	Correct	100 ms	134848 KB	Output is correct
33	Correct	98 ms	134892 KB	Output is correct
34	Correct	98 ms	134856 KB	Output is correct
35	Correct	98 ms	134876 KB	Output is correct
36	Correct	104 ms	134836 KB	Output is correct
37	Correct	118 ms	134852 KB	Output is correct
38	Correct	100 ms	134804 KB	Output is correct
39	Correct	97 ms	134884 KB	Output is correct
40	Correct	100 ms	134864 KB	Output is correct
41	Correct	105 ms	134856 KB	Output is correct
42	Correct	102 ms	134848 KB	Output is correct
43	Correct	101 ms	134928 KB	Output is correct
44	Correct	100 ms	134820 KB	Output is correct
45	Correct	120 ms	134804 KB	Output is correct
46	Correct	104 ms	134876 KB	Output is correct
47	Correct	102 ms	134920 KB	Output is correct
48	Correct	100 ms	134920 KB	Output is correct
49	Correct	103 ms	134880 KB	Output is correct
50	Correct	102 ms	134912 KB	Output is correct
51	Correct	121 ms	134852 KB	Output is correct
52	Correct	98 ms	134952 KB	Output is correct
53	Correct	98 ms	134852 KB	Output is correct
54	Correct	104 ms	135332 KB	Output is correct
55	Correct	119 ms	135360 KB	Output is correct
56	Correct	136 ms	139360 KB	Output is correct
57	Correct	129 ms	139304 KB	Output is correct
58	Correct	135 ms	139252 KB	Output is correct
59	Correct	134 ms	139076 KB	Output is correct
60	Correct	132 ms	137996 KB	Output is correct
61	Correct	132 ms	137952 KB	Output is correct
62	Correct	142 ms	138020 KB	Output is correct
63	Correct	139 ms	137996 KB	Output is correct
64	Correct	134 ms	138004 KB	Output is correct
65	Correct	135 ms	138052 KB	Output is correct
66	Correct	134 ms	138060 KB	Output is correct
67	Correct	134 ms	138084 KB	Output is correct
68	Correct	136 ms	138016 KB	Output is correct
69	Correct	98 ms	134864 KB	Output is correct
70	Correct	98 ms	134928 KB	Output is correct
71	Correct	133 ms	138084 KB	Output is correct
72	Correct	133 ms	138080 KB	Output is correct
73	Correct	137 ms	138052 KB	Output is correct
74	Correct	103 ms	134852 KB	Output is correct
75	Correct	103 ms	134832 KB	Output is correct
76	Correct	100 ms	134808 KB	Output is correct
77	Correct	101 ms	134980 KB	Output is correct
78	Correct	159 ms	137596 KB	Output is correct
79	Correct	143 ms	137544 KB	Output is correct
80	Correct	165 ms	137644 KB	Output is correct
81	Correct	139 ms	138080 KB	Output is correct
82	Correct	160 ms	137832 KB	Output is correct
83	Correct	159 ms	137644 KB	Output is correct
84	Correct	102 ms	134948 KB	Output is correct
85	Correct	103 ms	134852 KB	Output is correct
86	Correct	98 ms	134936 KB	Output is correct
87	Correct	102 ms	134880 KB	Output is correct
88	Correct	103 ms	134936 KB	Output is correct
89	Correct	102 ms	134856 KB	Output is correct
90	Correct	102 ms	134892 KB	Output is correct
91	Correct	97 ms	134880 KB	Output is correct
92	Correct	99 ms	134860 KB	Output is correct
93	Correct	100 ms	134848 KB	Output is correct
94	Correct	100 ms	134944 KB	Output is correct
95	Correct	101 ms	134912 KB	Output is correct
96	Correct	100 ms	134876 KB	Output is correct
97	Correct	102 ms	134884 KB	Output is correct
98	Correct	101 ms	134904 KB	Output is correct
99	Correct	99 ms	134896 KB	Output is correct
100	Correct	96 ms	134948 KB	Output is correct
101	Correct	102 ms	135236 KB	Output is correct
102	Correct	102 ms	135176 KB	Output is correct
103	Correct	162 ms	137960 KB	Output is correct
104	Correct	154 ms	137996 KB	Output is correct
105	Correct	144 ms	138048 KB	Output is correct
106	Correct	157 ms	137556 KB	Output is correct
107	Correct	140 ms	138048 KB	Output is correct
108	Correct	144 ms	138060 KB	Output is correct
109	Correct	134 ms	138024 KB	Output is correct
110	Correct	132 ms	138036 KB	Output is correct
111	Correct	164 ms	137748 KB	Output is correct
112	Correct	168 ms	138028 KB	Output is correct
113	Correct	144 ms	137644 KB	Output is correct
114	Correct	162 ms	137568 KB	Output is correct
115	Correct	159 ms	137564 KB	Output is correct