oj.uz

Submission #143775

# Submission time Handle Problem Language Result Execution time Memory
143775 2019-08-15T04:34:07 Z jwvg0425 Arranging Shoes (IOI19_shoes) C++17
45 / 100
 99 ms 11512 KB 
#include "shoes.h"
#include <set>

long long count_swaps(std::vector<int> s) {
    std::set<int> minus;
    std::set<int> plus;
    std::vector<bool> used(s.size(), false);

    long long ans = 0;
    long long useCount = 0;

    for (int i = 0; i < s.size(); i++)
    {
        if (s[i] > 0)
            plus.insert(i);
        else
            minus.insert(i);
    }

    for (int i = 0; i < s.size(); i++)
    {
        if (used[i])
        {
            useCount--;
            continue;
        }

        if (s[i] > 0)
        {
            int near = *minus.lower_bound(i);
            minus.erase(near);
            used[near] = true;
            ans += near - i - useCount;
        }
        else
        {
            int near = *plus.lower_bound(i);
            plus.erase(near);
            used[near] = true;
            ans += near - i - 1 - useCount;
        }

        useCount++;
    }

    return ans;
}

Compilation message

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:12:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < s.size(); i++)
                     ~~^~~~~~~~~~
shoes.cpp:20:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < s.size(); i++)
                     ~~^~~~~~~~~~

Subtask #1
10.0 / 10.0

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

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Incorrect 2 ms 256 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 256 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 504 KB Output is correct
11 Correct 2 ms 252 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 256 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 9 ms 1400 KB Output is correct
21 Correct 9 ms 1400 KB Output is correct
22 Correct 86 ms 11256 KB Output is correct
23 Correct 96 ms 11256 KB Output is correct
24 Correct 93 ms 11384 KB Output is correct
25 Correct 92 ms 11384 KB Output is correct
26 Correct 81 ms 11240 KB Output is correct
27 Correct 96 ms 11260 KB Output is correct
28 Correct 93 ms 11256 KB Output is correct
29 Correct 92 ms 11256 KB Output is correct
30 Correct 92 ms 11256 KB Output is correct
31 Correct 85 ms 11260 KB Output is correct
32 Correct 91 ms 11384 KB Output is correct
33 Correct 88 ms 11256 KB Output is correct
34 Correct 91 ms 11256 KB Output is correct
35 Correct 2 ms 256 KB Output is correct
36 Correct 2 ms 256 KB Output is correct
37 Correct 89 ms 11256 KB Output is correct
38 Correct 90 ms 11232 KB Output is correct
39 Correct 99 ms 11256 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 96 ms 11264 KB Output is correct
6 Correct 96 ms 11256 KB Output is correct
7 Correct 94 ms 11512 KB Output is correct
8 Correct 92 ms 11256 KB Output is correct
9 Correct 95 ms 11296 KB Output is correct
10 Correct 96 ms 11220 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Incorrect 2 ms 256 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Incorrect 2 ms 256 KB Output isn't correct
4 Halted 0 ms 0 KB -