oj.uz

Submission #522619

# Submission time Handle Problem Language Result Execution time Memory
522619 2022-02-05T09:32:46 Z cig32 Arranging Shoes (IOI19_shoes) C++17
100 / 100
 218 ms 30208 KB 
#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;
using llong = long long;
#define BUGO(x) cerr << #x << " = " << x << '\n';
const int maxN = 200'005;
 
int t[maxN * 4];
 
int Get(int v, int vl, int vr, int i) {
    if (vl == vr)
        return t[v];
    int vm = vl + (vr - vl) / 2;
    if (i <= vm)
        return t[v] + Get(v * 2, vl, vm, i);
    return t[v] + Get(v * 2 + 1, vm + 1, vr, i);
}
void Add(int v, int vl, int vr, int l, int r, int val) {
    if (l > vr || vl > r) return;
    if (l <= vl && vr <= r) {
        t[v] += val;
        return;
    }
    int vm = vl + (vr - vl) / 2;
    Add(v * 2, vl, vm, l, r, val);
    Add(v * 2 + 1, vm + 1, vr, l, r, val);
}
vector<int> pos_[maxN * 2];
vector<int>* pos = pos_ + maxN;
long long count_swaps(vector<int> a) {
    int n = a.size();
    for (int i = 1; i < n; ++i)
        Add(1, 0, n - 1, i, i, i);
    for (int i = 0; i < n; ++i)
        pos[a[i]].push_back(i);
    for (int i = -n; i <= n; ++i)
        reverse(pos[i].begin(), pos[i].end());
    llong ans = 0;
    set<int> s;
    for (int i = 0; i < n; ++i)
        s.insert(i);
    for (int i = 0; i < n; i += 2)
    {
        int ai = a[*s.begin()];
        int ai1 = a[*next(s.begin())];
        if (ai == -ai1 && ai < 0) {
            s.erase(s.begin(), next(s.begin(), 2));
            pos[ai].pop_back();
            pos[ai1].pop_back();
            continue;
        }
        int j = pos[-ai].back();
        s.erase(s.begin());
        s.erase(s.find(j));
        pos[-ai].pop_back();
        pos[ai].pop_back();
 
        ans += (Get(1, 0, n - 1, j) - (i + 1));
        // if (i + 1 <= j - 1)
            Add(1, 0, n - 1, 0, j - 1, 1);
        if (ai > 0)
            ++ans;
    }
    return ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9676 KB Output is correct
2 Correct 6 ms 9692 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9676 KB Output is correct
2 Correct 6 ms 9692 KB Output is correct
3 Correct 5 ms 9676 KB Output is correct
4 Correct 5 ms 9676 KB Output is correct
5 Correct 6 ms 9692 KB Output is correct
6 Correct 5 ms 9628 KB Output is correct
7 Correct 5 ms 9692 KB Output is correct
8 Correct 5 ms 9696 KB Output is correct
9 Correct 7 ms 9692 KB Output is correct
10 Correct 6 ms 9660 KB Output is correct
11 Correct 6 ms 9676 KB Output is correct
12 Correct 6 ms 9696 KB Output is correct
13 Correct 5 ms 9676 KB Output is correct
14 Correct 5 ms 9676 KB Output is correct
15 Correct 5 ms 9696 KB Output is correct
16 Correct 6 ms 9696 KB Output is correct
17 Correct 5 ms 9676 KB Output is correct
18 Correct 5 ms 9676 KB Output is correct
19 Correct 5 ms 9696 KB Output is correct
20 Correct 6 ms 9640 KB Output is correct
21 Correct 5 ms 9676 KB Output is correct
22 Correct 5 ms 9688 KB Output is correct
23 Correct 5 ms 9676 KB Output is correct
24 Correct 5 ms 9696 KB Output is correct
25 Correct 6 ms 9676 KB Output is correct
26 Correct 6 ms 9676 KB Output is correct
27 Correct 5 ms 9692 KB Output is correct
28 Correct 5 ms 9676 KB Output is correct
29 Correct 6 ms 9676 KB Output is correct
30 Correct 6 ms 9692 KB Output is correct
31 Correct 5 ms 9676 KB Output is correct
32 Correct 5 ms 9676 KB Output is correct
33 Correct 5 ms 9676 KB Output is correct
34 Correct 5 ms 9676 KB Output is correct
35 Correct 5 ms 9700 KB Output is correct
36 Correct 5 ms 9676 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9676 KB Output is correct
2 Correct 6 ms 9692 KB Output is correct
3 Correct 5 ms 9676 KB Output is correct
4 Correct 5 ms 9676 KB Output is correct
5 Correct 7 ms 9676 KB Output is correct
6 Correct 6 ms 9676 KB Output is correct
7 Correct 5 ms 9596 KB Output is correct
8 Correct 6 ms 9676 KB Output is correct
9 Correct 5 ms 9676 KB Output is correct
10 Correct 5 ms 9676 KB Output is correct
11 Correct 5 ms 9672 KB Output is correct
12 Correct 6 ms 9676 KB Output is correct
13 Correct 6 ms 9700 KB Output is correct
14 Correct 5 ms 9676 KB Output is correct
15 Correct 5 ms 9676 KB Output is correct
16 Correct 6 ms 9696 KB Output is correct
17 Correct 6 ms 9676 KB Output is correct
18 Correct 6 ms 9828 KB Output is correct
19 Correct 7 ms 9836 KB Output is correct
20 Correct 15 ms 11136 KB Output is correct
21 Correct 15 ms 11232 KB Output is correct
22 Correct 119 ms 24828 KB Output is correct
23 Correct 105 ms 24172 KB Output is correct
24 Correct 140 ms 24868 KB Output is correct
25 Correct 120 ms 24288 KB Output is correct
26 Correct 135 ms 24768 KB Output is correct
27 Correct 149 ms 24532 KB Output is correct
28 Correct 118 ms 24520 KB Output is correct
29 Correct 157 ms 24480 KB Output is correct
30 Correct 125 ms 24428 KB Output is correct
31 Correct 127 ms 24740 KB Output is correct
32 Correct 150 ms 24464 KB Output is correct
33 Correct 152 ms 24316 KB Output is correct
34 Correct 120 ms 24504 KB Output is correct
35 Correct 5 ms 9676 KB Output is correct
36 Correct 5 ms 9676 KB Output is correct
37 Correct 126 ms 24496 KB Output is correct
38 Correct 133 ms 24508 KB Output is correct
39 Correct 125 ms 24400 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 9676 KB Output is correct
2 Correct 6 ms 9676 KB Output is correct
3 Correct 6 ms 9696 KB Output is correct
4 Correct 5 ms 9676 KB Output is correct
5 Correct 151 ms 29960 KB Output is correct
6 Correct 140 ms 25060 KB Output is correct
7 Correct 150 ms 29924 KB Output is correct
8 Correct 131 ms 24472 KB Output is correct
9 Correct 153 ms 29908 KB Output is correct
10 Correct 176 ms 26908 KB Output is correct

Subtask #5
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9676 KB Output is correct
2 Correct 6 ms 9692 KB Output is correct
3 Correct 5 ms 9676 KB Output is correct
4 Correct 5 ms 9676 KB Output is correct
5 Correct 6 ms 9692 KB Output is correct
6 Correct 5 ms 9628 KB Output is correct
7 Correct 5 ms 9692 KB Output is correct
8 Correct 5 ms 9696 KB Output is correct
9 Correct 7 ms 9692 KB Output is correct
10 Correct 6 ms 9660 KB Output is correct
11 Correct 6 ms 9676 KB Output is correct
12 Correct 6 ms 9696 KB Output is correct
13 Correct 5 ms 9676 KB Output is correct
14 Correct 5 ms 9676 KB Output is correct
15 Correct 5 ms 9696 KB Output is correct
16 Correct 6 ms 9696 KB Output is correct
17 Correct 5 ms 9676 KB Output is correct
18 Correct 5 ms 9676 KB Output is correct
19 Correct 5 ms 9696 KB Output is correct
20 Correct 6 ms 9640 KB Output is correct
21 Correct 5 ms 9676 KB Output is correct
22 Correct 5 ms 9688 KB Output is correct
23 Correct 5 ms 9676 KB Output is correct
24 Correct 5 ms 9696 KB Output is correct
25 Correct 6 ms 9676 KB Output is correct
26 Correct 6 ms 9676 KB Output is correct
27 Correct 5 ms 9692 KB Output is correct
28 Correct 5 ms 9676 KB Output is correct
29 Correct 6 ms 9676 KB Output is correct
30 Correct 6 ms 9692 KB Output is correct
31 Correct 5 ms 9676 KB Output is correct
32 Correct 5 ms 9676 KB Output is correct
33 Correct 5 ms 9676 KB Output is correct
34 Correct 5 ms 9676 KB Output is correct
35 Correct 5 ms 9700 KB Output is correct
36 Correct 5 ms 9676 KB Output is correct
37 Correct 8 ms 9676 KB Output is correct
38 Correct 8 ms 9692 KB Output is correct
39 Correct 8 ms 9676 KB Output is correct
40 Correct 9 ms 9656 KB Output is correct
41 Correct 8 ms 9804 KB Output is correct
42 Correct 7 ms 9832 KB Output is correct
43 Correct 7 ms 9816 KB Output is correct
44 Correct 6 ms 9832 KB Output is correct
45 Correct 6 ms 9804 KB Output is correct
46 Correct 8 ms 9832 KB Output is correct
47 Correct 6 ms 9804 KB Output is correct
48 Correct 6 ms 9832 KB Output is correct
49 Correct 9 ms 9804 KB Output is correct
50 Correct 6 ms 9832 KB Output is correct
51 Correct 6 ms 9828 KB Output is correct
52 Correct 6 ms 9804 KB Output is correct

Subtask #6
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9676 KB Output is correct
2 Correct 6 ms 9692 KB Output is correct
3 Correct 5 ms 9676 KB Output is correct
4 Correct 5 ms 9676 KB Output is correct
5 Correct 6 ms 9692 KB Output is correct
6 Correct 5 ms 9628 KB Output is correct
7 Correct 5 ms 9692 KB Output is correct
8 Correct 5 ms 9696 KB Output is correct
9 Correct 7 ms 9692 KB Output is correct
10 Correct 6 ms 9660 KB Output is correct
11 Correct 6 ms 9676 KB Output is correct
12 Correct 6 ms 9696 KB Output is correct
13 Correct 5 ms 9676 KB Output is correct
14 Correct 5 ms 9676 KB Output is correct
15 Correct 5 ms 9696 KB Output is correct
16 Correct 6 ms 9696 KB Output is correct
17 Correct 5 ms 9676 KB Output is correct
18 Correct 5 ms 9676 KB Output is correct
19 Correct 5 ms 9696 KB Output is correct
20 Correct 6 ms 9640 KB Output is correct
21 Correct 5 ms 9676 KB Output is correct
22 Correct 5 ms 9688 KB Output is correct
23 Correct 5 ms 9676 KB Output is correct
24 Correct 5 ms 9696 KB Output is correct
25 Correct 6 ms 9676 KB Output is correct
26 Correct 6 ms 9676 KB Output is correct
27 Correct 5 ms 9692 KB Output is correct
28 Correct 5 ms 9676 KB Output is correct
29 Correct 6 ms 9676 KB Output is correct
30 Correct 6 ms 9692 KB Output is correct
31 Correct 5 ms 9676 KB Output is correct
32 Correct 5 ms 9676 KB Output is correct
33 Correct 5 ms 9676 KB Output is correct
34 Correct 5 ms 9676 KB Output is correct
35 Correct 5 ms 9700 KB Output is correct
36 Correct 5 ms 9676 KB Output is correct
37 Correct 5 ms 9676 KB Output is correct
38 Correct 5 ms 9676 KB Output is correct
39 Correct 7 ms 9676 KB Output is correct
40 Correct 6 ms 9676 KB Output is correct
41 Correct 5 ms 9596 KB Output is correct
42 Correct 6 ms 9676 KB Output is correct
43 Correct 5 ms 9676 KB Output is correct
44 Correct 5 ms 9676 KB Output is correct
45 Correct 5 ms 9672 KB Output is correct
46 Correct 6 ms 9676 KB Output is correct
47 Correct 6 ms 9700 KB Output is correct
48 Correct 5 ms 9676 KB Output is correct
49 Correct 5 ms 9676 KB Output is correct
50 Correct 6 ms 9696 KB Output is correct
51 Correct 6 ms 9676 KB Output is correct
52 Correct 6 ms 9828 KB Output is correct
53 Correct 7 ms 9836 KB Output is correct
54 Correct 15 ms 11136 KB Output is correct
55 Correct 15 ms 11232 KB Output is correct
56 Correct 119 ms 24828 KB Output is correct
57 Correct 105 ms 24172 KB Output is correct
58 Correct 140 ms 24868 KB Output is correct
59 Correct 120 ms 24288 KB Output is correct
60 Correct 135 ms 24768 KB Output is correct
61 Correct 149 ms 24532 KB Output is correct
62 Correct 118 ms 24520 KB Output is correct
63 Correct 157 ms 24480 KB Output is correct
64 Correct 125 ms 24428 KB Output is correct
65 Correct 127 ms 24740 KB Output is correct
66 Correct 150 ms 24464 KB Output is correct
67 Correct 152 ms 24316 KB Output is correct
68 Correct 120 ms 24504 KB Output is correct
69 Correct 5 ms 9676 KB Output is correct
70 Correct 5 ms 9676 KB Output is correct
71 Correct 126 ms 24496 KB Output is correct
72 Correct 133 ms 24508 KB Output is correct
73 Correct 125 ms 24400 KB Output is correct
74 Correct 7 ms 9676 KB Output is correct
75 Correct 6 ms 9676 KB Output is correct
76 Correct 6 ms 9696 KB Output is correct
77 Correct 5 ms 9676 KB Output is correct
78 Correct 151 ms 29960 KB Output is correct
79 Correct 140 ms 25060 KB Output is correct
80 Correct 150 ms 29924 KB Output is correct
81 Correct 131 ms 24472 KB Output is correct
82 Correct 153 ms 29908 KB Output is correct
83 Correct 176 ms 26908 KB Output is correct
84 Correct 8 ms 9676 KB Output is correct
85 Correct 8 ms 9692 KB Output is correct
86 Correct 8 ms 9676 KB Output is correct
87 Correct 9 ms 9656 KB Output is correct
88 Correct 8 ms 9804 KB Output is correct
89 Correct 7 ms 9832 KB Output is correct
90 Correct 7 ms 9816 KB Output is correct
91 Correct 6 ms 9832 KB Output is correct
92 Correct 6 ms 9804 KB Output is correct
93 Correct 8 ms 9832 KB Output is correct
94 Correct 6 ms 9804 KB Output is correct
95 Correct 6 ms 9832 KB Output is correct
96 Correct 9 ms 9804 KB Output is correct
97 Correct 6 ms 9832 KB Output is correct
98 Correct 6 ms 9828 KB Output is correct
99 Correct 6 ms 9804 KB Output is correct
100 Correct 6 ms 9804 KB Output is correct
101 Correct 19 ms 11624 KB Output is correct
102 Correct 19 ms 11204 KB Output is correct
103 Correct 218 ms 30208 KB Output is correct
104 Correct 124 ms 29656 KB Output is correct
105 Correct 172 ms 27492 KB Output is correct
106 Correct 135 ms 29868 KB Output is correct
107 Correct 148 ms 25428 KB Output is correct
108 Correct 141 ms 25832 KB Output is correct
109 Correct 125 ms 24532 KB Output is correct
110 Correct 121 ms 24524 KB Output is correct
111 Correct 157 ms 29200 KB Output is correct
112 Correct 187 ms 28816 KB Output is correct
113 Correct 174 ms 25280 KB Output is correct
114 Correct 150 ms 29912 KB Output is correct
115 Correct 138 ms 29892 KB Output is correct