loops

#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;

#define int long long
#define endl '\n'
#define fastio ios_base::sync_with_stdio(0); cin.tie(0)

signed main()
{
    fastio;

    /*
    5

    1
    2
    3
    4
    5
    */
    /*
    for(1; 2; 3)
    1 -> baslangic
    2 -> sert
    3 -> addim
    */
    /*
    int n;
    cin >> n;
    for(int i = 1; i <= n; i++){
        cout << i << '\n';
    }
    */
    /*
    int n;
    cin >> n;
    for(int i = 2; i <= n; i += 2){
        cout << i << '\n';
    }
    */
    /*
    10

    1 4 9
    */
    /*
    int n;
    cin >> n;
    for(int i = 1; i <= n; i++){
        if(i * i <= n)
            cout << i * i << " ";
        else
            break;
    }
    */
    /*
    10
    % 3 != 2
    1
    3
    4
    6
    7
    9
    10
    */
    /*
    int n;
    cin >> n;
    for(int i = 1; i <= n; i++){
        if(i % 3 == 2)
            continue;

        cout << i << '\n';
    }

    for(1; 2; 3){
        ...
    }

    1
    while(2){
        ...
        3
    }

    for(int i = 1; i <= n; i++){
        cout << i << '\n';
    }

    int i = 1;
    while(i <= n){
        cout << i << '\n';
        i++;
    }

    */
    /*
    int n;
    cin >> n;
    int i = 1;
    while(i <= n){
        cout << i << " ";
        i *= 2;
    }*/
    /*
    16

    1 2 4 8 16
    */
    /*
    int n;
    cin >> n;
    for(int i = n; i >= 1; i--){
        if(i % 2)
            cout << i << " ";
    }
    */
}