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Submission #204155

# Submission time Handle Problem Language Result Execution time Memory
204155 2020-02-24T16:36:49 Z my99n Arranging Shoes (IOI19_shoes) C++14
100 / 100
 642 ms 149716 KB 
#include<bits/stdc++.h>
using namespace std;

bool le (int a, int b) {
    if (abs(a) == abs(b)) return a < b;
    return abs(a) < abs(b);
}

int n;
long long inv (vector<int> &b, int l, int r) {
    if (r == l) return 0;
    int mid = (l + r)/2;
    long long now = inv(b, l, mid) + inv(b, mid+1, r);
    int i = l, j = mid+1;
    vector<int> c;
    // for (int i = l; i <= mid; i++) cerr << b[i] << ' '; cerr << " : ";
    // for (int i = mid+1; i <= r; i++) cerr << b[i] << ' '; cerr << endl;
    while (i <= mid and j <= r) {
        if (le(b[i], b[j])) c.push_back(b[i++]);
        else c.push_back(b[j++]), now += mid-i+1;
    }
    while(i <= mid) c.push_back(b[i++]);
    while(j <= r) c.push_back(b[j++]);
    for (int i = l, j = 0; i <= r; i++, j++) b[i] = c[j];
    // for (int i = 0; i < 2*n; i++) cerr << b[i] << ' '; cerr << endl;
    return now;
}

long long count_swaps (vector<int> a){
    n = a.size() / 2;
    vector<int> b;
    map<int, queue<int>> q;
    int cnt = 1;
    for (auto x : a) {
        if (!q[x].empty()) { b.push_back(q[x].front()); q[x].pop(); continue; }
        b.push_back(cnt * (x<0?-1:1));
        q[-x].push(cnt * (x<0?1:-1));
        cnt++;
    }
    // for (auto x : b) cerr << x << ' '; cerr << endl;
    return inv (b, 0, b.size()-1);
}

// int main () {
//     printf("%lld", count_swaps({3, -3, 2, 1, -1, -1, -2, -3, 1, 3}));
//     return 0;
// }

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 256 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 5 ms 256 KB Output is correct
8 Correct 5 ms 256 KB Output is correct
9 Correct 5 ms 256 KB Output is correct
10 Correct 5 ms 256 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 5 ms 256 KB Output is correct
13 Correct 5 ms 256 KB Output is correct
14 Correct 5 ms 256 KB Output is correct
15 Correct 5 ms 256 KB Output is correct
16 Correct 5 ms 256 KB Output is correct
17 Correct 5 ms 256 KB Output is correct
18 Correct 5 ms 256 KB Output is correct
19 Correct 5 ms 256 KB Output is correct
20 Correct 5 ms 376 KB Output is correct
21 Correct 5 ms 256 KB Output is correct
22 Correct 5 ms 376 KB Output is correct
23 Correct 5 ms 256 KB Output is correct
24 Correct 5 ms 376 KB Output is correct
25 Correct 5 ms 256 KB Output is correct
26 Correct 5 ms 256 KB Output is correct
27 Correct 5 ms 256 KB Output is correct
28 Correct 5 ms 256 KB Output is correct
29 Correct 5 ms 376 KB Output is correct
30 Correct 5 ms 256 KB Output is correct
31 Correct 5 ms 256 KB Output is correct
32 Correct 5 ms 256 KB Output is correct
33 Correct 5 ms 376 KB Output is correct
34 Correct 5 ms 256 KB Output is correct
35 Correct 5 ms 256 KB Output is correct
36 Correct 5 ms 256 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 5 ms 256 KB Output is correct
8 Correct 5 ms 256 KB Output is correct
9 Correct 5 ms 256 KB Output is correct
10 Correct 5 ms 256 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 5 ms 256 KB Output is correct
13 Correct 5 ms 376 KB Output is correct
14 Correct 5 ms 256 KB Output is correct
15 Correct 5 ms 256 KB Output is correct
16 Correct 5 ms 256 KB Output is correct
17 Correct 5 ms 376 KB Output is correct
18 Correct 5 ms 376 KB Output is correct
19 Correct 5 ms 376 KB Output is correct
20 Correct 14 ms 888 KB Output is correct
21 Correct 13 ms 888 KB Output is correct
22 Correct 91 ms 4308 KB Output is correct
23 Correct 89 ms 4316 KB Output is correct
24 Correct 91 ms 4320 KB Output is correct
25 Correct 84 ms 4716 KB Output is correct
26 Correct 89 ms 5452 KB Output is correct
27 Correct 91 ms 5332 KB Output is correct
28 Correct 86 ms 5964 KB Output is correct
29 Correct 87 ms 5868 KB Output is correct
30 Correct 87 ms 5868 KB Output is correct
31 Correct 91 ms 5468 KB Output is correct
32 Correct 86 ms 5868 KB Output is correct
33 Correct 86 ms 5740 KB Output is correct
34 Correct 85 ms 5868 KB Output is correct
35 Correct 5 ms 256 KB Output is correct
36 Correct 5 ms 256 KB Output is correct
37 Correct 84 ms 5952 KB Output is correct
38 Correct 86 ms 5868 KB Output is correct
39 Correct 86 ms 5868 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 609 ms 148368 KB Output is correct
6 Correct 214 ms 18124 KB Output is correct
7 Correct 604 ms 149716 KB Output is correct
8 Correct 87 ms 5868 KB Output is correct
9 Correct 600 ms 149564 KB Output is correct
10 Correct 429 ms 77524 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 5 ms 256 KB Output is correct
8 Correct 5 ms 256 KB Output is correct
9 Correct 5 ms 256 KB Output is correct
10 Correct 5 ms 256 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 5 ms 256 KB Output is correct
13 Correct 5 ms 256 KB Output is correct
14 Correct 5 ms 256 KB Output is correct
15 Correct 5 ms 256 KB Output is correct
16 Correct 5 ms 256 KB Output is correct
17 Correct 5 ms 256 KB Output is correct
18 Correct 5 ms 256 KB Output is correct
19 Correct 5 ms 256 KB Output is correct
20 Correct 5 ms 376 KB Output is correct
21 Correct 5 ms 256 KB Output is correct
22 Correct 5 ms 376 KB Output is correct
23 Correct 5 ms 256 KB Output is correct
24 Correct 5 ms 376 KB Output is correct
25 Correct 5 ms 256 KB Output is correct
26 Correct 5 ms 256 KB Output is correct
27 Correct 5 ms 256 KB Output is correct
28 Correct 5 ms 256 KB Output is correct
29 Correct 5 ms 376 KB Output is correct
30 Correct 5 ms 256 KB Output is correct
31 Correct 5 ms 256 KB Output is correct
32 Correct 5 ms 256 KB Output is correct
33 Correct 5 ms 376 KB Output is correct
34 Correct 5 ms 256 KB Output is correct
35 Correct 5 ms 256 KB Output is correct
36 Correct 5 ms 256 KB Output is correct
37 Correct 5 ms 376 KB Output is correct
38 Correct 5 ms 376 KB Output is correct
39 Correct 5 ms 504 KB Output is correct
40 Correct 5 ms 632 KB Output is correct
41 Correct 7 ms 1784 KB Output is correct
42 Correct 7 ms 1784 KB Output is correct
43 Correct 7 ms 1656 KB Output is correct
44 Correct 7 ms 1400 KB Output is correct
45 Correct 7 ms 1272 KB Output is correct
46 Correct 7 ms 1144 KB Output is correct
47 Correct 7 ms 1016 KB Output is correct
48 Correct 6 ms 760 KB Output is correct
49 Correct 6 ms 632 KB Output is correct
50 Correct 6 ms 376 KB Output is correct
51 Correct 5 ms 376 KB Output is correct
52 Correct 7 ms 1784 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 256 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 5 ms 256 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 5 ms 256 KB Output is correct
7 Correct 5 ms 256 KB Output is correct
8 Correct 5 ms 256 KB Output is correct
9 Correct 5 ms 256 KB Output is correct
10 Correct 5 ms 256 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 5 ms 256 KB Output is correct
13 Correct 5 ms 256 KB Output is correct
14 Correct 5 ms 256 KB Output is correct
15 Correct 5 ms 256 KB Output is correct
16 Correct 5 ms 256 KB Output is correct
17 Correct 5 ms 256 KB Output is correct
18 Correct 5 ms 256 KB Output is correct
19 Correct 5 ms 256 KB Output is correct
20 Correct 5 ms 376 KB Output is correct
21 Correct 5 ms 256 KB Output is correct
22 Correct 5 ms 376 KB Output is correct
23 Correct 5 ms 256 KB Output is correct
24 Correct 5 ms 376 KB Output is correct
25 Correct 5 ms 256 KB Output is correct
26 Correct 5 ms 256 KB Output is correct
27 Correct 5 ms 256 KB Output is correct
28 Correct 5 ms 256 KB Output is correct
29 Correct 5 ms 376 KB Output is correct
30 Correct 5 ms 256 KB Output is correct
31 Correct 5 ms 256 KB Output is correct
32 Correct 5 ms 256 KB Output is correct
33 Correct 5 ms 376 KB Output is correct
34 Correct 5 ms 256 KB Output is correct
35 Correct 5 ms 256 KB Output is correct
36 Correct 5 ms 256 KB Output is correct
37 Correct 5 ms 376 KB Output is correct
38 Correct 5 ms 256 KB Output is correct
39 Correct 5 ms 256 KB Output is correct
40 Correct 5 ms 256 KB Output is correct
41 Correct 5 ms 256 KB Output is correct
42 Correct 5 ms 256 KB Output is correct
43 Correct 5 ms 256 KB Output is correct
44 Correct 5 ms 256 KB Output is correct
45 Correct 5 ms 256 KB Output is correct
46 Correct 5 ms 256 KB Output is correct
47 Correct 5 ms 376 KB Output is correct
48 Correct 5 ms 256 KB Output is correct
49 Correct 5 ms 256 KB Output is correct
50 Correct 5 ms 256 KB Output is correct
51 Correct 5 ms 376 KB Output is correct
52 Correct 5 ms 376 KB Output is correct
53 Correct 5 ms 376 KB Output is correct
54 Correct 14 ms 888 KB Output is correct
55 Correct 13 ms 888 KB Output is correct
56 Correct 91 ms 4308 KB Output is correct
57 Correct 89 ms 4316 KB Output is correct
58 Correct 91 ms 4320 KB Output is correct
59 Correct 84 ms 4716 KB Output is correct
60 Correct 89 ms 5452 KB Output is correct
61 Correct 91 ms 5332 KB Output is correct
62 Correct 86 ms 5964 KB Output is correct
63 Correct 87 ms 5868 KB Output is correct
64 Correct 87 ms 5868 KB Output is correct
65 Correct 91 ms 5468 KB Output is correct
66 Correct 86 ms 5868 KB Output is correct
67 Correct 86 ms 5740 KB Output is correct
68 Correct 85 ms 5868 KB Output is correct
69 Correct 5 ms 256 KB Output is correct
70 Correct 5 ms 256 KB Output is correct
71 Correct 84 ms 5952 KB Output is correct
72 Correct 86 ms 5868 KB Output is correct
73 Correct 86 ms 5868 KB Output is correct
74 Correct 5 ms 256 KB Output is correct
75 Correct 5 ms 256 KB Output is correct
76 Correct 5 ms 256 KB Output is correct
77 Correct 5 ms 376 KB Output is correct
78 Correct 609 ms 148368 KB Output is correct
79 Correct 214 ms 18124 KB Output is correct
80 Correct 604 ms 149716 KB Output is correct
81 Correct 87 ms 5868 KB Output is correct
82 Correct 600 ms 149564 KB Output is correct
83 Correct 429 ms 77524 KB Output is correct
84 Correct 5 ms 376 KB Output is correct
85 Correct 5 ms 376 KB Output is correct
86 Correct 5 ms 504 KB Output is correct
87 Correct 5 ms 632 KB Output is correct
88 Correct 7 ms 1784 KB Output is correct
89 Correct 7 ms 1784 KB Output is correct
90 Correct 7 ms 1656 KB Output is correct
91 Correct 7 ms 1400 KB Output is correct
92 Correct 7 ms 1272 KB Output is correct
93 Correct 7 ms 1144 KB Output is correct
94 Correct 7 ms 1016 KB Output is correct
95 Correct 6 ms 760 KB Output is correct
96 Correct 6 ms 632 KB Output is correct
97 Correct 6 ms 376 KB Output is correct
98 Correct 5 ms 376 KB Output is correct
99 Correct 7 ms 1784 KB Output is correct
100 Correct 8 ms 1784 KB Output is correct
101 Correct 42 ms 13816 KB Output is correct
102 Correct 29 ms 3832 KB Output is correct
103 Correct 642 ms 149580 KB Output is correct
104 Correct 527 ms 149476 KB Output is correct
105 Correct 446 ms 87388 KB Output is correct
106 Correct 599 ms 149580 KB Output is correct
107 Correct 219 ms 21452 KB Output is correct
108 Correct 270 ms 37580 KB Output is correct
109 Correct 85 ms 5868 KB Output is correct
110 Correct 84 ms 5868 KB Output is correct
111 Correct 560 ms 133608 KB Output is correct
112 Correct 550 ms 117588 KB Output is correct
113 Correct 244 ms 23260 KB Output is correct
114 Correct 606 ms 149588 KB Output is correct
115 Correct 606 ms 149596 KB Output is correct