oj.uz

Submission #318459

# Submission time Handle Problem Language Result Execution time Memory
318459 2020-11-02T02:00:16 Z joylintp Arranging Shoes (IOI19_shoes) C++17
100 / 100
 188 ms 141292 KB 
#include "shoes.h"
#include<bits/stdc++.h>
using namespace std;

int n;
long long BIT[200001];
vector<queue<int>> ls, rs;

void mod(int p, int x)
{
    while (p <= n)
        BIT[p] += x, p += p & -p;
}

int qry(int p)
{
    int ret = 0;
    while (p)
        ret += BIT[p], p -= p & -p;
    return ret;
}

long long count_swaps(vector<int> ss)
{
    n = ss.size();
	vector<int> s = {0};
	for (int i : ss)
        s.push_back(i);

    ls.resize(n / 2 + 1), rs.resize(n / 2 + 1);
    for (int i = 1; i <= n; i++)
        if (s[i] < 0)
            ls[-s[i]].push(i);
        else
            rs[s[i]].push(i);

    for (int i = 1; i <= n; i++)
        mod(i, 1);

    long long ans = 0;
    for (int i = 1; i <= n; i++)
        if (qry(i))
            if (s[i] < 0)
            {
                int lpos = i, rpos = rs[-s[i]].front();
                ls[-s[i]].pop(), rs[-s[i]].pop();

                ans += qry(rpos - 1) - qry(lpos);
                mod(lpos, -1), mod(rpos, -1);
            }
            else
            {
                int lpos = ls[s[i]].front(), rpos = i;
                ls[s[i]].pop(), rs[s[i]].pop();

                ans += qry(lpos - 1) - qry(rpos - 1);
                mod(lpos, -1), mod(rpos, -1);
            }

    return ans;
}

Compilation message

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:42:12: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else]
   42 |         if (qry(i))
      |            ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 0 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 0 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 0 ms 364 KB Output is correct
12 Correct 0 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 0 ms 364 KB Output is correct
15 Correct 0 ms 364 KB Output is correct
16 Correct 0 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 0 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 0 ms 364 KB Output is correct
24 Correct 0 ms 364 KB Output is correct
25 Correct 0 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 268 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 492 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 268 KB Output is correct
36 Correct 0 ms 364 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 0 ms 364 KB Output is correct
9 Correct 0 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 0 ms 364 KB Output is correct
13 Correct 0 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 492 KB Output is correct
17 Correct 1 ms 748 KB Output is correct
18 Correct 2 ms 1772 KB Output is correct
19 Correct 2 ms 1772 KB Output is correct
20 Correct 14 ms 14316 KB Output is correct
21 Correct 14 ms 14316 KB Output is correct
22 Correct 137 ms 139736 KB Output is correct
23 Correct 131 ms 141016 KB Output is correct
24 Correct 135 ms 141012 KB Output is correct
25 Correct 129 ms 140760 KB Output is correct
26 Correct 137 ms 141016 KB Output is correct
27 Correct 129 ms 140760 KB Output is correct
28 Correct 135 ms 141016 KB Output is correct
29 Correct 136 ms 141048 KB Output is correct
30 Correct 133 ms 141016 KB Output is correct
31 Correct 135 ms 141016 KB Output is correct
32 Correct 133 ms 141016 KB Output is correct
33 Correct 129 ms 140788 KB Output is correct
34 Correct 131 ms 141016 KB Output is correct
35 Correct 1 ms 364 KB Output is correct
36 Correct 1 ms 364 KB Output is correct
37 Correct 132 ms 141016 KB Output is correct
38 Correct 131 ms 141020 KB Output is correct
39 Correct 131 ms 141292 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 168 ms 138840 KB Output is correct
6 Correct 143 ms 140120 KB Output is correct
7 Correct 172 ms 140120 KB Output is correct
8 Correct 132 ms 141016 KB Output is correct
9 Correct 169 ms 140120 KB Output is correct
10 Correct 167 ms 140120 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 0 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 0 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 0 ms 364 KB Output is correct
12 Correct 0 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 0 ms 364 KB Output is correct
15 Correct 0 ms 364 KB Output is correct
16 Correct 0 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 0 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 0 ms 364 KB Output is correct
24 Correct 0 ms 364 KB Output is correct
25 Correct 0 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 268 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 492 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 268 KB Output is correct
36 Correct 0 ms 364 KB Output is correct
37 Correct 0 ms 364 KB Output is correct
38 Correct 1 ms 364 KB Output is correct
39 Correct 1 ms 492 KB Output is correct
40 Correct 1 ms 748 KB Output is correct
41 Correct 2 ms 1644 KB Output is correct
42 Correct 2 ms 1644 KB Output is correct
43 Correct 2 ms 1644 KB Output is correct
44 Correct 2 ms 1644 KB Output is correct
45 Correct 2 ms 1644 KB Output is correct
46 Correct 2 ms 1644 KB Output is correct
47 Correct 2 ms 1772 KB Output is correct
48 Correct 2 ms 1644 KB Output is correct
49 Correct 2 ms 1772 KB Output is correct
50 Correct 2 ms 1772 KB Output is correct
51 Correct 2 ms 1644 KB Output is correct
52 Correct 2 ms 1644 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 0 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 0 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 0 ms 364 KB Output is correct
12 Correct 0 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 0 ms 364 KB Output is correct
15 Correct 0 ms 364 KB Output is correct
16 Correct 0 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 0 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 0 ms 364 KB Output is correct
24 Correct 0 ms 364 KB Output is correct
25 Correct 0 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 268 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 1 ms 364 KB Output is correct
32 Correct 1 ms 364 KB Output is correct
33 Correct 1 ms 492 KB Output is correct
34 Correct 1 ms 364 KB Output is correct
35 Correct 1 ms 268 KB Output is correct
36 Correct 0 ms 364 KB Output is correct
37 Correct 0 ms 364 KB Output is correct
38 Correct 1 ms 364 KB Output is correct
39 Correct 1 ms 492 KB Output is correct
40 Correct 1 ms 364 KB Output is correct
41 Correct 1 ms 364 KB Output is correct
42 Correct 0 ms 364 KB Output is correct
43 Correct 0 ms 364 KB Output is correct
44 Correct 1 ms 364 KB Output is correct
45 Correct 1 ms 364 KB Output is correct
46 Correct 0 ms 364 KB Output is correct
47 Correct 0 ms 364 KB Output is correct
48 Correct 1 ms 364 KB Output is correct
49 Correct 1 ms 364 KB Output is correct
50 Correct 1 ms 492 KB Output is correct
51 Correct 1 ms 748 KB Output is correct
52 Correct 2 ms 1772 KB Output is correct
53 Correct 2 ms 1772 KB Output is correct
54 Correct 14 ms 14316 KB Output is correct
55 Correct 14 ms 14316 KB Output is correct
56 Correct 137 ms 139736 KB Output is correct
57 Correct 131 ms 141016 KB Output is correct
58 Correct 135 ms 141012 KB Output is correct
59 Correct 129 ms 140760 KB Output is correct
60 Correct 137 ms 141016 KB Output is correct
61 Correct 129 ms 140760 KB Output is correct
62 Correct 135 ms 141016 KB Output is correct
63 Correct 136 ms 141048 KB Output is correct
64 Correct 133 ms 141016 KB Output is correct
65 Correct 135 ms 141016 KB Output is correct
66 Correct 133 ms 141016 KB Output is correct
67 Correct 129 ms 140788 KB Output is correct
68 Correct 131 ms 141016 KB Output is correct
69 Correct 1 ms 364 KB Output is correct
70 Correct 1 ms 364 KB Output is correct
71 Correct 132 ms 141016 KB Output is correct
72 Correct 131 ms 141020 KB Output is correct
73 Correct 131 ms 141292 KB Output is correct
74 Correct 1 ms 364 KB Output is correct
75 Correct 0 ms 364 KB Output is correct
76 Correct 1 ms 364 KB Output is correct
77 Correct 0 ms 364 KB Output is correct
78 Correct 168 ms 138840 KB Output is correct
79 Correct 143 ms 140120 KB Output is correct
80 Correct 172 ms 140120 KB Output is correct
81 Correct 132 ms 141016 KB Output is correct
82 Correct 169 ms 140120 KB Output is correct
83 Correct 167 ms 140120 KB Output is correct
84 Correct 0 ms 364 KB Output is correct
85 Correct 1 ms 364 KB Output is correct
86 Correct 1 ms 492 KB Output is correct
87 Correct 1 ms 748 KB Output is correct
88 Correct 2 ms 1644 KB Output is correct
89 Correct 2 ms 1644 KB Output is correct
90 Correct 2 ms 1644 KB Output is correct
91 Correct 2 ms 1644 KB Output is correct
92 Correct 2 ms 1644 KB Output is correct
93 Correct 2 ms 1644 KB Output is correct
94 Correct 2 ms 1772 KB Output is correct
95 Correct 2 ms 1644 KB Output is correct
96 Correct 2 ms 1772 KB Output is correct
97 Correct 2 ms 1772 KB Output is correct
98 Correct 2 ms 1644 KB Output is correct
99 Correct 2 ms 1644 KB Output is correct
100 Correct 2 ms 1772 KB Output is correct
101 Correct 15 ms 14316 KB Output is correct
102 Correct 14 ms 14316 KB Output is correct
103 Correct 188 ms 140248 KB Output is correct
104 Correct 174 ms 140120 KB Output is correct
105 Correct 176 ms 140124 KB Output is correct
106 Correct 175 ms 140372 KB Output is correct
107 Correct 155 ms 140120 KB Output is correct
108 Correct 163 ms 140120 KB Output is correct
109 Correct 136 ms 141016 KB Output is correct
110 Correct 134 ms 141016 KB Output is correct
111 Correct 169 ms 140120 KB Output is correct
112 Correct 179 ms 140120 KB Output is correct
113 Correct 155 ms 140120 KB Output is correct
114 Correct 170 ms 140120 KB Output is correct
115 Correct 168 ms 140120 KB Output is correct