N5. Формальный исполнитель

#include <iostream>
#include <cmath>
#include <vector>
#include <set>
#include <string>
#include <algorithm>
using namespace std;
using ll = long long;
void cv(vector <int> v){
    for (auto x: v) cout<<x<<' ';
    cout<<'\n';
}

vector <int> ans;
ll S(int n, int a1){
    //cout<<"(a1 + n - 1 ) * n = "<<(a1 + n - 1 ) * n<<'\n';
    //cout<<"a1= "<<a1<<" n= "<<n<<'\n';
    return (a1 + n - 1 ) * n;
}

void al(ll N){
    int odd, evn;
    if (N % 2 == 0){
        odd = N-1;
        evn = N - 2;
    }else{
        odd = N - 2;
        evn = N - 1;
    }
    evn /= 2;
    odd = odd / 2 + 1;
    ll Sodd, Sevn;
    Sodd = S(odd,1);
    Sevn = S(evn,2);
    ll res = N - Sodd + Sevn;
    if (res == 67){
        ans.push_back(N);
    }

}

int main()
{
    for (ll i=1;i<1e8;++i){
        //cout<<"i = "<<i<<'\n';
        al(i);
    }
    for (auto g: ans){
        cout<<g<<'\n';
    }
}