/* 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
{
{
Scanner sc
=new Scanner
(System.
in); int u
= Integer.
parseInt(sc.
nextLine()); int n = (u-1);
int d = (u*45);
int y = (n/2);
int x = (n%2);
int r = (d+y*20+x*5);
int t = (r/60);
int e = (9+t);
int p = (r%60);
}
}
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