/******************************************************************************
Welcome to GDB Online.
GDB online is an online compiler and debugger tool for C, C++, Python, Java, PHP, Ruby, Perl,
C#, VB, Swift, Pascal, Fortran, Haskell, Objective-C, Assembly, HTML, CSS, JS, SQLite, Prolog.
Code, Compile, Run and Debug online from anywhere in world.
*******************************************************************************/
public class Main
{
public static void main(String[] args)
{
int a,b=10;
for(a=1; a<=10&&b>=1;a++,b--)
{
System.out.println(a+" "+b);
}
}
}