Submission #523835

#	Time	Username	Problem	Language	Result	Execution time	Memory
523835		pakhomovee	Arranging Shoes (IOI19_shoes)	C++17	50 / 100	1092 ms	3100 KiB

shoes

#include "shoes.h"
#include <cmath>

using namespace std;

long long count_swaps(std::vector<int> s) {
    const int n = s.size();
    long long ans = 0;
    for (int i = 0; i < n; i += 2) {
        int j;
        for (j = i + 1; abs(s[j]) != abs(s[i]) || s[i] * s[j] > 0; ++j) {
            if (s[j] != 0) {
                ++ans;
            }
        }
        for (int q = j; q > i + 1; --q) {
            swap(s[q], s[q - 1]);
        }
        if (s[i] > 0) {
            ++ans;
        }
    }
    return ans;
}

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 15
• Subtask 5: 20 / 20
• Subtask 6: 0 / 15