#include <iostream>
using namespace std;
class calculator {
public:
int add(int x,int y);
int multiply(int x,int y);
};
int calculator::add(int x,int y){
return x+y;
}
int calculator::multiply(int x,int y){
return x*y;
}
int main(){
calculator instance;
cout<<instance.add(1,2)<<endl;
cout<<instance.multiply(5,2)<<endl;
}
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