Submission #1351394

#	Time	Username	Problem	Language	Result	Execution time	Memory
1351394		ElayV13	Arranging Shoes (IOI19_shoes)	C++20	10 / 100	0 ms	344 KiB

shoes

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

#define ll long long

ll count_swaps(vector<int>s)
{
      int n=(int)s.size();
      vector<bool>used(n,false);
      ll res=0;
      for(int i=0;i<n;i++){
            if(used[i]) continue;
            for(int j=i+1;j<n;j++){
                  if(!used[j]&&s[j]==-s[i]){
                        if(s[i]>0) ++res;
                        for(int k=i+1;k<=j-1;k++) res+=(!used[j]);
                        used[i]=used[j]=1;
                        break;
                  }
            }
      }
      return res;
}

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