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