#include <cassert>
#include <iostream>

extern int counter;
extern const int limit;

void increment() {
    if (counter < limit) ++counter;
}

int counter = 0;
const int limit = 2;

int main() {
    increment();
    increment();
    increment();
    assert(counter == 2);
    std::cout << counter << ' ' << limit << '\n';
}