#include <iostream>
using namespace std;
int main()
{
int x = 7;
int y = x + 60;
int z = y - 9;
int f = z + 3;
cout << "x = " << x << endl;
cout << "y = " << y <<endl;
cout << "z = " << z <<endl;
cout << "f = " << f;
return 0;
}
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