Submission #532877

#	Time	Username	Problem	Language	Result	Execution time	Memory
532877		christinelynn	Arranging Shoes (IOI19_shoes)	C++17	0 / 100	1 ms	296 KiB

shoes

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

int64_t count_swaps(vector<int> s){
  int n = s.size(), ans = 0;
  for(int i=0;i<2*n;i+=2)
  {
    for(int j=i+1;j<2*n;j++)
    {
      if(abs(s[j]) == abs(s[i]))
      {
        ans += j - i - 1;
        for(int k=j-1;k>=i+1;k--) swap(s[k], s[k+1]);
        break;
      }
    }
    if(s[i] > s[i + 1])
    {
      ans += 1;
      swap(s[i], s[i + 1]);
    }
  }
  return ans;
}

// int main(){
//   vector<int> t1 = {2, 1, -1, -2};
//   vector<int> t2 = {-2, 2, 2, -2, -2, 2};
//   cout << count_swaps(t2) << '\n';
// }

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