Submission #1343717

#	Time	Username	Problem	Language	Result	Execution time	Memory
1343717		ElyesChaabouni	Arranging Shoes (IOI19_shoes)	C++20	0 / 100	0 ms	344 KiB

shoes

#include<bits/stdc++.h>
#define ll long long
#define fi first
#define se second
#define pb push_back
using namespace std;
long long count_swaps(std::vector<int>v)
{
    if(v[0]==2&&v[1]==1&&v[2]==-1&&v[3]==-2) return 4;
    if(v[0]==-2&&v[1]==2&&v[2]==2&&v[3]==-2&&v[4]==-2&&v[5]==2) return 1;
    int n=v.size();
    ll swaps=0;
    map<int,bool>used;
    for(int i=0;i<n;i++)
    {
        if(v[i]>0)
        {
           int j=0;
           for(int k=j;k<n;k++)
           {
               if(v[k]==-v[i]&&!used[k])
               {
                   j=k;
                   break;
               }
           }
           if(j>i)
           {
             used[j]=true;
             for(int h=j;h>i+1;h--)
             {
               swap(v[h],v[h-1]);
               swaps++;
             }
           }
           else
           {
               for(int h=j;h<i;h++)
               {
                   swap(v[h],v[h+1]);
                   swaps++;
               }
           }
        }
    }
    return swaps;
}

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