1#include <iostream>
2using namespace std;
3 
4void modify(int a, int &b) {
5    a = a + 10;
6    b = b + 10;
7}
8 
9int main() {
10    int x = 5, y = 5;
11    modify(x, y);
12    cout << x << " " << y << endl;
13    return 0;
14}