Submission #947068

#	Time	Username	Problem	Language	Result	Execution time	Memory
947068		study	Arranging Shoes (IOI19_shoes)	C++17	50 / 100	1061 ms	3256 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;

long long count_swaps(std::vector<int> s) {
        int cnt=0, n = s.size();
        for (int i=0; i<n; i += 2){
                int idx = 0;
                for (int j=i+1; j<n; ++j){
                        if (s[i] == -s[j]){
                                idx = j;
                                break;
                        }
                }
                for (int j=idx; j>=i+2; --j){
                        swap(s[j],s[j-1]);
                        ++cnt;
                }
                if (s[i] > 0){
                        ++cnt;
                }
        }
        return cnt;
}

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