#include <stdio.h>
#include <iostream>
#include <iomanip>
using namespace std;
int main()
{
char x;
int c;

cin >> x;
while (x<'0' || x >'9') {cin >> x;}
c=0;
while (x>='0' && x <='9') {
    c=c*10 + (int) x - (int)'0';
    cin >> x;}
cout  << "Prvni zadane cislo je " << c << " jeho dvojnasobek pak " << c*2 << ".";    
}