#include <iostream>
#include <cstdlib>
#include <time.h>
using namespace std;
void sleep(int mseconds) {
clock_t goal = mseconds + clock();
while (goal > clock());
}
void printnum ( int begin )
{
cout<< begin;
sleep(1000);
if ( begin < 9 )
{
printnum ( begin + 1 );
}
cout<< begin;
sleep(1000);
}
int main(){
printnum(1);
}