#include <iostream>

using namespace std;

void f(int a, int b)
{
    cout<<a<<" "<<b<<"\n";
}

int main()
{
    int x = 0;
    f(x, x++);
    cout<<x<<"\n";
    
    x = 0;
    f(x, ++x);
    cout<<x<<"\n";
}