oj.uz

Submission #143774

# Submission time Handle Problem Language Result Execution time Memory
143774 2019-08-15T04:29:22 Z jwvg0425 Arranging Shoes (IOI19_shoes) C++17
25 / 100
 98 ms 11384 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])
            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 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Incorrect 2 ms 256 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Incorrect 2 ms 376 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 95 ms 11228 KB Output is correct
6 Correct 96 ms 11256 KB Output is correct
7 Correct 97 ms 11256 KB Output is correct
8 Correct 93 ms 11256 KB Output is correct
9 Correct 97 ms 11384 KB Output is correct
10 Correct 98 ms 11256 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 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 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Incorrect 2 ms 256 KB Output isn't correct
4 Halted 0 ms 0 KB -