#include <bits/stdc++.h>
using namespace std;
int n, i, aux, v[1002], w[1002], a;
bool ok;
int main()
{
    ifstream f("paresort.in");
    ofstream g("paresort.out");
    f >> n;
    for(i = 1; i <= n; i ++)
    {
        f >> v[i];
        if(v[i] % 2 == 0) w[++ a] = v[i];
    }
    if(a == 0) {g << "nu exista"; return 0;}
    do
    {
        ok = true;
        for(i = 1; i < a; i ++)
        if(w[i] > w[i + 1])
        {
            aux = w[i];
            w[i] = w[i + 1];
            w[i + 1] = aux;
            ok = false;
        }
    }while(!ok);
    g << a << "\n";
    for(i = 1; i <= a; i ++)
    g << w[i] << " ";
    return 0;
}


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