#include <iostream>
using namespace std;
int prima_cifra(int x)
{
int cifra=0;
while(x!=0)
{
cifra = x%10;
x=x/10;
}
return cifra;
}
int main()
{
int v[]={1,2,3,4,5,55,443,23,3905,10};
int n=10;
for(int i=0; i<n/2; i++)
if(prima_cifra(v[i])==prima_cifra(v[n-1-i]))
cout<<v[i]<<" "<<v[n-1-i]<<endl;
return 0;
}