oj.uz

Submission #867499

# Submission time Handle Problem Language Result Execution time Memory
867499 2023-10-28T14:04:54 Z cheat_when_I_was_young Arranging Shoes (IOI19_shoes) C++17
30 / 100
 75 ms 75480 KB 
#include "shoes.h"
#include "bits/stdc++.h"
using namespace std;

void update(int pos, int val, vector<int> &bit) {
    ++pos;
    for (; pos < (int)bit.size(); pos += pos&-pos)
        bit[pos] += val;
}

void range_update(int l, int r, int val, vector<int> &bit) {
    update(l, val, bit);
    update(r+1, -val, bit);
}

int get(int pos, vector<int> &bit) {
    ++pos;
    int res = 0;
    for (; pos > 0; pos -= pos&-pos)
        res += bit[pos];
    return res;
}

long long count_swaps(vector<int> s) {
    int n = (int)s.size();
    long long ans = 0;
    vector<int> bit(n+1, 0);
    vector<vector<int>> l(n/2+1, vector<int>());
    vector<queue<int>> r(n/2+1, queue<int>());

    for (int i = 0; i < n; ++i) {
        if (s[i] < 0) {
            s[i] = -s[i];
            if (r[s[i]].size()) {
                ans += i - r[s[i]].front() - get(r[s[i]].front(), bit);
                range_update(r[s[i]].front(), i, 1, bit);
                r[s[i]].pop();
            } else
                l[s[i]].push_back(i);
        } else {
            if (l[s[i]].size()) {
                ans += i - l[s[i]].back() - get(l[s[i]].back(), bit) - 1;
                range_update(l[s[i]].front(), i, 1, bit);
                l[s[i]].pop_back();
            } else
                r[s[i]].push(i);
        }
    }

    return ans;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Incorrect 0 ms 344 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 600 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 344 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 600 KB Output is correct
18 Correct 1 ms 1116 KB Output is correct
19 Correct 1 ms 1116 KB Output is correct
20 Correct 6 ms 7420 KB Output is correct
21 Correct 5 ms 7516 KB Output is correct
22 Correct 57 ms 72276 KB Output is correct
23 Correct 58 ms 72276 KB Output is correct
24 Correct 56 ms 72212 KB Output is correct
25 Correct 55 ms 72784 KB Output is correct
26 Correct 56 ms 72280 KB Output is correct
27 Correct 53 ms 72400 KB Output is correct
28 Correct 55 ms 72796 KB Output is correct
29 Correct 54 ms 72788 KB Output is correct
30 Correct 58 ms 72784 KB Output is correct
31 Correct 57 ms 72284 KB Output is correct
32 Correct 62 ms 72964 KB Output is correct
33 Correct 54 ms 72784 KB Output is correct
34 Correct 54 ms 72784 KB Output is correct
35 Correct 0 ms 344 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 57 ms 72912 KB Output is correct
38 Correct 60 ms 72924 KB Output is correct
39 Correct 58 ms 72912 KB Output is correct

Subtask #4
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 75 ms 75480 KB Output is correct
6 Incorrect 64 ms 73044 KB Output isn't correct
7 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Incorrect 0 ms 344 KB Output isn't correct
15 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Incorrect 0 ms 344 KB Output isn't correct
15 Halted 0 ms 0 KB -