Submission #411993

#	Time	Username	Problem	Language	Result	Execution time	Memory
411993		dolijan	Arranging Shoes (IOI19_shoes)	C++14	50 / 100	582 ms	1048580 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;
long long cnt=0;
void resi(int l,int r,int n,std::vector<int> s)
{
    if(s.empty()) return;
    int prva=s[l];
    for(int i=l+1;i<=r;i++)
    {
        if(s[i]==(prva*(-1)))
        {
            if(prva<0)
            {
                cnt+=(i-(l+1));
                s.erase(s.begin()+i);
                s.erase(s.begin());
            }
            else
            {
                cnt+=(i-l);
                s.erase(s.begin()+i);
                s.erase(s.begin());
            }
            break;
        }
    }
    n-=2;
    resi(0,n-1,n,s);
}
long long count_swaps(std::vector<int> s) {
    int n=s.size();
    int l=0;
    int r=n-1;
    resi(l,r,n,s);
	return cnt;
}

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