#include<iostream>
using namespace std;
class bankaccount{
    private:
    int balance;
    public:
    void setinitialbalance(int initial){
        balance=initial;
    }
    void deposit(int amount){
        balance+=amount;
    }
    int getbalance(){
        return balance;
    }
};
int main()
{
    int initalbalance,depositamount;
    cin>>initialbalance;
    cin>>depositamount;
    
    if(initialbalance<0 || depositamount<0){
        cout<<"Invalid input";
        return 0;
    }
    bankaccount account;
    account.setiniatialbalance(initialbalance);
    account.deposit(depositamount);
    cout<<account.getbalance();
    return 0;
}