#include<iostream>
#include<cstdlib>

using namespace std;

int main(int argc, char* argv[])
{
    if (argc <3)
        {
         cerr << "usage: " << argv[0] << " num1 num2\n";
         return EXIT_FAILURE;
        }
    int a= atoi(argv[1]);
    int b= atoi(argv[2]);
    cout << "= " << a+b << endl;
    return EXIT_SUCCESS;
}