#include <iostream>
#include <cstdlib>
#include <cstdio>
#include <cmath>
using namespace std;
int main()

{
 int c = 502560410469883-1*2;
 int b = 1;
int e = 0;

notright:
while(c%b) b+1;
 if(c % b == e)
 {

 cout<<""<<b<<"";
 cout<<"and this is right.";

  }



  cout<<""<<b<<""<<endl;




system("PAUSE");
}