/*
Date:13-7-13.
今天就算开始学习C++了，
写了一个浓厚的有面向对象的气息.(a+b).
*/
#include<iostream>
using namespace std;
class sum
{
private:
int a;
int b;
public:
void input();
void Sum1();
};
void sum::input(){cin>>a>>b;}
void sum::Sum1(){cout<<a+b<<endl;}
int main()
{
class sum a1;
a1.input();
a1.Sum1();
}