#include <iostream>
#include <cmath>
#include <unistd.h>

using namespace std;
int sum (int a, int b){
    return a+b;
}
int c = 123;
    int one = 1;
    int two = 2;
    cout << sum(sum(one, two), sum(one, two)) << endl;
    cout << c << endl;
    for(int k=0; k<15; k++){
        int r=k;
        cout<< r << endl;
    }
 return 0;
}