답안 #144820

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
144820	2019-08-17T20:56:46 Z	khrbuddy03	Arranging Shoes (IOI19_shoes)	C++14	100 / 100	120 ms	16008 KB

shoes

#include <bits/stdc++.h>
 
using namespace std;
 
using lint = long long;
 
const int maxn = 1e5 + 9;
 
struct fenwick {
    vector<lint> tree;
    fenwick(int _n) : tree(_n + 1, 0) {}
    lint get(int index) {
        lint sum = 0LL;
        while (0 < index) {
            sum += tree[index] * 1LL;
            index -= (index & -index);
        }
        return sum * 1LL;
    }
    void add(int index, lint value) {
        while (index < tree.size()) {
            tree[index] += value * 1LL;
            index += (index & -index);
        }
    }
};
 
lint count_swaps(vector<int> s) {
    int n = (int)s.size() / 2;
    vector<bool> check(n * 2, false);
    fenwick tree(n * 2);
    priority_queue<int> pq1[maxn], pq2[maxn];
    lint answer = 0LL;
    for (int i = 0; i < 2 * n; ++i) {
        if (s[i] > 0)
            pq1[s[i]].push(-i);
        else
            pq2[-s[i]].push(-i);
        tree.add(i + 1, 1LL);
    }
    for (int i = 0; i < 2 * n; ++i) {
        if (check[i])
            continue;
        int pos;
        if (s[i] > 0) {
            pos = -pq2[s[i]].top();
            pq2[s[i]].pop(); pq1[s[i]].pop();
            ++answer;
        } else {
            pos = -pq1[-s[i]].top();
            pq1[-s[i]].pop(); pq2[-s[i]].pop();
        }
        tree.add(i + 1, -1);
        tree.add(pos + 1, -1);
        answer += (tree.get(pos + 1) * 1LL - tree.get(i) * 1LL) * 1LL;
        check[i] = check[pos] = true;
    }
    return answer;
}

Compilation message

shoes.cpp: In member function 'void fenwick::add(int, lint)':
shoes.cpp:21:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         while (index < tree.size()) {
                ~~~~~~^~~~~~~~~~~~~

Subtask #1

10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	6520 KB	Output is correct
2	Correct	7 ms	6648 KB	Output is correct

Subtask #2

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	6520 KB	Output is correct
2	Correct	7 ms	6648 KB	Output is correct
3	Correct	7 ms	6648 KB	Output is correct
4	Correct	7 ms	6648 KB	Output is correct
5	Correct	7 ms	6524 KB	Output is correct
6	Correct	7 ms	6520 KB	Output is correct
7	Correct	7 ms	6520 KB	Output is correct
8	Correct	7 ms	6520 KB	Output is correct
9	Correct	7 ms	6520 KB	Output is correct
10	Correct	7 ms	6520 KB	Output is correct
11	Correct	7 ms	6648 KB	Output is correct
12	Correct	7 ms	6520 KB	Output is correct
13	Correct	7 ms	6648 KB	Output is correct
14	Correct	7 ms	6648 KB	Output is correct
15	Correct	7 ms	6520 KB	Output is correct
16	Correct	7 ms	6648 KB	Output is correct
17	Correct	7 ms	6648 KB	Output is correct
18	Correct	7 ms	6520 KB	Output is correct
19	Correct	7 ms	6520 KB	Output is correct
20	Correct	7 ms	6648 KB	Output is correct
21	Correct	7 ms	6648 KB	Output is correct
22	Correct	7 ms	6620 KB	Output is correct
23	Correct	7 ms	6520 KB	Output is correct
24	Correct	7 ms	6648 KB	Output is correct
25	Correct	8 ms	6648 KB	Output is correct
26	Correct	8 ms	6652 KB	Output is correct
27	Correct	7 ms	6648 KB	Output is correct
28	Correct	7 ms	6520 KB	Output is correct
29	Correct	7 ms	6648 KB	Output is correct
30	Correct	7 ms	6520 KB	Output is correct
31	Correct	9 ms	6520 KB	Output is correct
32	Correct	7 ms	6648 KB	Output is correct
33	Correct	7 ms	6520 KB	Output is correct
34	Correct	7 ms	6648 KB	Output is correct
35	Correct	7 ms	6648 KB	Output is correct
36	Correct	7 ms	6648 KB	Output is correct

Subtask #3

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	6520 KB	Output is correct
2	Correct	7 ms	6648 KB	Output is correct
3	Correct	8 ms	6624 KB	Output is correct
4	Correct	7 ms	6648 KB	Output is correct
5	Correct	7 ms	6648 KB	Output is correct
6	Correct	7 ms	6652 KB	Output is correct
7	Correct	7 ms	6648 KB	Output is correct
8	Correct	7 ms	6652 KB	Output is correct
9	Correct	7 ms	6648 KB	Output is correct
10	Correct	9 ms	6520 KB	Output is correct
11	Correct	7 ms	6652 KB	Output is correct
12	Correct	9 ms	6648 KB	Output is correct
13	Correct	8 ms	6648 KB	Output is correct
14	Correct	7 ms	6648 KB	Output is correct
15	Correct	7 ms	6648 KB	Output is correct
16	Correct	7 ms	6520 KB	Output is correct
17	Correct	8 ms	6648 KB	Output is correct
18	Correct	8 ms	6648 KB	Output is correct
19	Correct	8 ms	6648 KB	Output is correct
20	Correct	13 ms	7032 KB	Output is correct
21	Correct	13 ms	7160 KB	Output is correct
22	Correct	67 ms	10784 KB	Output is correct
23	Correct	60 ms	10656 KB	Output is correct
24	Correct	68 ms	10728 KB	Output is correct
25	Correct	63 ms	10868 KB	Output is correct
26	Correct	67 ms	10656 KB	Output is correct
27	Correct	59 ms	10652 KB	Output is correct
28	Correct	64 ms	10864 KB	Output is correct
29	Correct	67 ms	10864 KB	Output is correct
30	Correct	64 ms	10864 KB	Output is correct
31	Correct	67 ms	10640 KB	Output is correct
32	Correct	64 ms	10992 KB	Output is correct
33	Correct	62 ms	10864 KB	Output is correct
34	Correct	64 ms	10964 KB	Output is correct
35	Correct	7 ms	6652 KB	Output is correct
36	Correct	7 ms	6648 KB	Output is correct
37	Correct	63 ms	10836 KB	Output is correct
38	Correct	64 ms	10864 KB	Output is correct
39	Correct	64 ms	10908 KB	Output is correct

Subtask #4

15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	6648 KB	Output is correct
2	Correct	7 ms	6648 KB	Output is correct
3	Correct	7 ms	6520 KB	Output is correct
4	Correct	7 ms	6520 KB	Output is correct
5	Correct	103 ms	16008 KB	Output is correct
6	Correct	79 ms	11256 KB	Output is correct
7	Correct	109 ms	15996 KB	Output is correct
8	Correct	70 ms	10756 KB	Output is correct
9	Correct	103 ms	15992 KB	Output is correct
10	Correct	94 ms	13048 KB	Output is correct

Subtask #5

20.0 / 20.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	6520 KB	Output is correct
2	Correct	7 ms	6648 KB	Output is correct
3	Correct	7 ms	6648 KB	Output is correct
4	Correct	7 ms	6648 KB	Output is correct
5	Correct	7 ms	6524 KB	Output is correct
6	Correct	7 ms	6520 KB	Output is correct
7	Correct	7 ms	6520 KB	Output is correct
8	Correct	7 ms	6520 KB	Output is correct
9	Correct	7 ms	6520 KB	Output is correct
10	Correct	7 ms	6520 KB	Output is correct
11	Correct	7 ms	6648 KB	Output is correct
12	Correct	7 ms	6520 KB	Output is correct
13	Correct	7 ms	6648 KB	Output is correct
14	Correct	7 ms	6648 KB	Output is correct
15	Correct	7 ms	6520 KB	Output is correct
16	Correct	7 ms	6648 KB	Output is correct
17	Correct	7 ms	6648 KB	Output is correct
18	Correct	7 ms	6520 KB	Output is correct
19	Correct	7 ms	6520 KB	Output is correct
20	Correct	7 ms	6648 KB	Output is correct
21	Correct	7 ms	6648 KB	Output is correct
22	Correct	7 ms	6620 KB	Output is correct
23	Correct	7 ms	6520 KB	Output is correct
24	Correct	7 ms	6648 KB	Output is correct
25	Correct	8 ms	6648 KB	Output is correct
26	Correct	8 ms	6652 KB	Output is correct
27	Correct	7 ms	6648 KB	Output is correct
28	Correct	7 ms	6520 KB	Output is correct
29	Correct	7 ms	6648 KB	Output is correct
30	Correct	7 ms	6520 KB	Output is correct
31	Correct	9 ms	6520 KB	Output is correct
32	Correct	7 ms	6648 KB	Output is correct
33	Correct	7 ms	6520 KB	Output is correct
34	Correct	7 ms	6648 KB	Output is correct
35	Correct	7 ms	6648 KB	Output is correct
36	Correct	7 ms	6648 KB	Output is correct
37	Correct	7 ms	6520 KB	Output is correct
38	Correct	8 ms	6648 KB	Output is correct
39	Correct	7 ms	6648 KB	Output is correct
40	Correct	7 ms	6648 KB	Output is correct
41	Correct	8 ms	6648 KB	Output is correct
42	Correct	8 ms	6776 KB	Output is correct
43	Correct	8 ms	6648 KB	Output is correct
44	Correct	8 ms	6648 KB	Output is correct
45	Correct	8 ms	6648 KB	Output is correct
46	Correct	8 ms	6648 KB	Output is correct
47	Correct	8 ms	6648 KB	Output is correct
48	Correct	8 ms	6648 KB	Output is correct
49	Correct	8 ms	6620 KB	Output is correct
50	Correct	8 ms	6652 KB	Output is correct
51	Correct	8 ms	6648 KB	Output is correct
52	Correct	9 ms	6648 KB	Output is correct

Subtask #6

15.0 / 15.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	6520 KB	Output is correct
2	Correct	7 ms	6648 KB	Output is correct
3	Correct	7 ms	6648 KB	Output is correct
4	Correct	7 ms	6648 KB	Output is correct
5	Correct	7 ms	6524 KB	Output is correct
6	Correct	7 ms	6520 KB	Output is correct
7	Correct	7 ms	6520 KB	Output is correct
8	Correct	7 ms	6520 KB	Output is correct
9	Correct	7 ms	6520 KB	Output is correct
10	Correct	7 ms	6520 KB	Output is correct
11	Correct	7 ms	6648 KB	Output is correct
12	Correct	7 ms	6520 KB	Output is correct
13	Correct	7 ms	6648 KB	Output is correct
14	Correct	7 ms	6648 KB	Output is correct
15	Correct	7 ms	6520 KB	Output is correct
16	Correct	7 ms	6648 KB	Output is correct
17	Correct	7 ms	6648 KB	Output is correct
18	Correct	7 ms	6520 KB	Output is correct
19	Correct	7 ms	6520 KB	Output is correct
20	Correct	7 ms	6648 KB	Output is correct
21	Correct	7 ms	6648 KB	Output is correct
22	Correct	7 ms	6620 KB	Output is correct
23	Correct	7 ms	6520 KB	Output is correct
24	Correct	7 ms	6648 KB	Output is correct
25	Correct	8 ms	6648 KB	Output is correct
26	Correct	8 ms	6652 KB	Output is correct
27	Correct	7 ms	6648 KB	Output is correct
28	Correct	7 ms	6520 KB	Output is correct
29	Correct	7 ms	6648 KB	Output is correct
30	Correct	7 ms	6520 KB	Output is correct
31	Correct	9 ms	6520 KB	Output is correct
32	Correct	7 ms	6648 KB	Output is correct
33	Correct	7 ms	6520 KB	Output is correct
34	Correct	7 ms	6648 KB	Output is correct
35	Correct	7 ms	6648 KB	Output is correct
36	Correct	7 ms	6648 KB	Output is correct
37	Correct	8 ms	6624 KB	Output is correct
38	Correct	7 ms	6648 KB	Output is correct
39	Correct	7 ms	6648 KB	Output is correct
40	Correct	7 ms	6652 KB	Output is correct
41	Correct	7 ms	6648 KB	Output is correct
42	Correct	7 ms	6652 KB	Output is correct
43	Correct	7 ms	6648 KB	Output is correct
44	Correct	9 ms	6520 KB	Output is correct
45	Correct	7 ms	6652 KB	Output is correct
46	Correct	9 ms	6648 KB	Output is correct
47	Correct	8 ms	6648 KB	Output is correct
48	Correct	7 ms	6648 KB	Output is correct
49	Correct	7 ms	6648 KB	Output is correct
50	Correct	7 ms	6520 KB	Output is correct
51	Correct	8 ms	6648 KB	Output is correct
52	Correct	8 ms	6648 KB	Output is correct
53	Correct	8 ms	6648 KB	Output is correct
54	Correct	13 ms	7032 KB	Output is correct
55	Correct	13 ms	7160 KB	Output is correct
56	Correct	67 ms	10784 KB	Output is correct
57	Correct	60 ms	10656 KB	Output is correct
58	Correct	68 ms	10728 KB	Output is correct
59	Correct	63 ms	10868 KB	Output is correct
60	Correct	67 ms	10656 KB	Output is correct
61	Correct	59 ms	10652 KB	Output is correct
62	Correct	64 ms	10864 KB	Output is correct
63	Correct	67 ms	10864 KB	Output is correct
64	Correct	64 ms	10864 KB	Output is correct
65	Correct	67 ms	10640 KB	Output is correct
66	Correct	64 ms	10992 KB	Output is correct
67	Correct	62 ms	10864 KB	Output is correct
68	Correct	64 ms	10964 KB	Output is correct
69	Correct	7 ms	6652 KB	Output is correct
70	Correct	7 ms	6648 KB	Output is correct
71	Correct	63 ms	10836 KB	Output is correct
72	Correct	64 ms	10864 KB	Output is correct
73	Correct	64 ms	10908 KB	Output is correct
74	Correct	7 ms	6648 KB	Output is correct
75	Correct	7 ms	6648 KB	Output is correct
76	Correct	7 ms	6520 KB	Output is correct
77	Correct	7 ms	6520 KB	Output is correct
78	Correct	103 ms	16008 KB	Output is correct
79	Correct	79 ms	11256 KB	Output is correct
80	Correct	109 ms	15996 KB	Output is correct
81	Correct	70 ms	10756 KB	Output is correct
82	Correct	103 ms	15992 KB	Output is correct
83	Correct	94 ms	13048 KB	Output is correct
84	Correct	7 ms	6520 KB	Output is correct
85	Correct	8 ms	6648 KB	Output is correct
86	Correct	7 ms	6648 KB	Output is correct
87	Correct	7 ms	6648 KB	Output is correct
88	Correct	8 ms	6648 KB	Output is correct
89	Correct	8 ms	6776 KB	Output is correct
90	Correct	8 ms	6648 KB	Output is correct
91	Correct	8 ms	6648 KB	Output is correct
92	Correct	8 ms	6648 KB	Output is correct
93	Correct	8 ms	6648 KB	Output is correct
94	Correct	8 ms	6648 KB	Output is correct
95	Correct	8 ms	6648 KB	Output is correct
96	Correct	8 ms	6620 KB	Output is correct
97	Correct	8 ms	6652 KB	Output is correct
98	Correct	8 ms	6648 KB	Output is correct
99	Correct	9 ms	6648 KB	Output is correct
100	Correct	8 ms	6648 KB	Output is correct
101	Correct	15 ms	7416 KB	Output is correct
102	Correct	14 ms	7032 KB	Output is correct
103	Correct	120 ms	15992 KB	Output is correct
104	Correct	108 ms	15992 KB	Output is correct
105	Correct	107 ms	13276 KB	Output is correct
106	Correct	98 ms	15992 KB	Output is correct
107	Correct	82 ms	11384 KB	Output is correct
108	Correct	83 ms	11768 KB	Output is correct
109	Correct	64 ms	10992 KB	Output is correct
110	Correct	63 ms	10992 KB	Output is correct
111	Correct	104 ms	15352 KB	Output is correct
112	Correct	105 ms	14716 KB	Output is correct
113	Correct	81 ms	11280 KB	Output is correct
114	Correct	104 ms	15992 KB	Output is correct
115	Correct	104 ms	15992 KB	Output is correct