10-19-P1

#include <iostream>
#include <string>
#include <fstream>
using namespace std;

/* Yeungnam University College in Korea
http://secure.ync.ac.kr/ */

int main()
{
    int a, b, c;

    ifstream inStream;
    inStream.open("input.txt");

    ofstream outStream;
    outStream.open("output.txt");

    inStream >> a >> b;

    c = a + b ;

    outStream << a << " and " << b << " add up to " << c << ".";

    inStream.close();
    outStream.close();

    return 0;
}