Submission #212647

#	Time	Username	Problem	Language	Result	Execution time	Memory
212647		Aydarov03	Arranging Shoes (IOI19_shoes)	C++14	50 / 100	1094 ms	3448 KiB

shoes

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

long long count_swaps(std::vector<int> a) {
  int n = a.size();
  int ans = 0;
  for (int l = 0; l < n; l += 2) {
    int lst = -1;
    if (a[l] < 0) {
      lst = l + 1;
    } else {
      lst = l;
    }

    for (int r = l + 1; r < n; r++) {
      if (a[r] == -a[l]) {
        int pos = r;
        while (pos > lst) {
          swap(a[pos], a[pos - 1]);
          pos--, ans++;
        }
        break;
      }
    }
  }
  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