Submission #531230

#	Time	Username	Problem	Language	Result	Execution time	Memory
531230		makanhulia	Arranging Shoes (IOI19_shoes)	C++17	25 / 100	19 ms	1868 KiB

shoes

#include <bits/stdc++.h>
using namespace std;
int64_t count_swaps(vector<int> s)
{
  if(s.size()==2)
  {
    if(s[1]<0)
    {
      return 1;
    }
    else
    {
      return 0;
    }
  }
  else
  {
    int64_t x=(int64_t)s.size()/2;
    return (x)*(x-1)/2;
  }
}

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