#include<iostream>
#include <fstream>
using namespace std;
int main(){
    ifstream myfile;
    myfile.open("adunare.in");
    if(myfile.is_open()){
        long int a,b,c;
        myfile>>a;
        myfile>>b;
        c=a+b;
        if(c<=2000000000){
            ofstream mynewfile;
            mynewfile.open("adunare.out");
            if(mynewfile.is_open()){
                mynewfile<<c;
            }else
                cout<<("nu am putut sa deschid fisierul adunare.out");
        }
    }else
        cout<<("nu am putut sa deschid fisierul adunare.in");

}