#include<iostream>
#define debug(x) cout<<#x<<"="<<x<<endl;
using namespace std;
namespace Calculator{
    namespace Addition{
        void add(int a,int b){
        cout<<"SUM="<<a+b<<endl;
        }
    }
    namespace Subtraction{
        void sub(int a,int b){
        cout<<"SUB="<<a-b<<endl;
        }
    }
}
int main()
{
int a,b;
cin>>a>>b;
namespace ADD= Calculator::Addition;
namespace SUB= Calculator::Subtraction;
ADD::add(a,b);
SUB::sub(a,b);

int ans=5;
debug(ans);
}