/* package whatever; // don't place package name! */
import java.util.*;
import java.lang.*;
import java.io.*;
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
public static int downUp( int t )
{
if ( t == 0 )
return 1;
int n = downUp( t - 1 );
return n + 1;
}
{
System.
out.
println (downUp
( 3 )); }
}
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