#include <cstdio>
#include <iostream>
#include <cstdlib>

using std::cout;
using std::endl;

int main(int argc, char **argv)
{
    double sum=0;

    if(argc > 1)
    {
        for(int i = 1; i < argc; i++)
            sum+= atof(argv[i]);
        cout<< "Sum is " << sum << endl;
    } else {
        cout<< "No numbers" << endl;
    }
    return 0;
}