#include<iostream>

 #include<string>

 using namespace std;

 /* 计算Fib数列 */

 class Func

 {

     int x;

     int y;

 public:

     Func(int x = , int y = )

     {

         this->x = x;

         this->y = y;

     }

     int operator () ()

     {

         int ret = ;

         ret = x;

         x = y;

         y = ret + x;

         return ret;

     }

 };

 int main()

 {

     Func f1;

     for(int i=; i<; i++)

     {

         cout << f1() <<endl;

     }

     return ;

 }