Submission #1400939

#	Time	Username	Problem	Language	Result	Execution time	Memory
1400939		gem123	Arranging Shoes (IOI19_shoes)	C++20	10 / 100	0 ms	344 KiB

shoes

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

 long long count_swaps(vector<int>S){
  long long n=S.size()/2;
   long long ans=0;
   for(int i=0;i<n*2-1;i+=2){
       if(abs(S[i])!=abs(S[i+1])){
           for(int j=i+2;j<2*n;j++){
             if(abs(S[i])!=abs(S[j])){
                 swap(S[i],S[j]);
                 ans++;
             }  
           }
       } 
   } 
   int i=0;
   while(i<2*n-1){
       if(S[i]<0&&S[i+1]>0){
           i+=2;
       }else{
           i+=2;
           ans++;
       }
   }
    return ans;
}

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