Submission #1287366

#	Time	Username	Problem	Language	Result	Execution time	Memory
1287366		eri16	Arranging Shoes (IOI19_shoes)	C++20	50 / 100	1094 ms	1968 KiB

shoes

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

long long count_swaps(vector <int> v){
    
    long long cnt=0;
    
    long long cur=0;    
    
    for (int i=0; i<v.size(); i++){
        if (i%2==0){
        
            cur=(v[i])*(-1);
                    
            int k=v[i];
                    
            v[i]=k;
            
        }    
        
        else{
            for (int j=i; j<v.size(); j++){
                if (v[j]==cur){
                    cnt+=(j-i);
                    
                    int k=v[j];
                    
                    for (int ii=j; ii>i; ii--){
                        v[ii]=v[ii-1];
                    }
                    
                    v[i]=k;
                    
                    break;                    
                }    
            }
            
            if (v[i]<v[i-1]){
                cnt++;
            }
            
        }
        /*
        for (int i=0; i<v.size(); i++){
            cout<<v[i]<<' ';
        }
        cout<<"\n";
        */
    }
    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