import java.util.*;
import java.util.zip.*;
import java.util.List;
import java.util.regex.*;
import java.util.concurrent.*;
import java.util.concurrent.atomic.*;
import java.util.concurrent.locks.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.table.*;
import java.io.*;
import java.net.*;
import java.lang.reflect.*;
import java.lang.ref.*;
import java.lang.management.*;
import java.security.*;
import java.security.spec.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import javax.imageio.*;
import java.math.*;
class main {
static Set repFToSet(IF0 f, int n) {
Set set = new HashSet();
for (int _repeat_0 = 0; _repeat_0 < n; _repeat_0++) {
set.add(f.get());
}
return set;
}
static Set repFToSet(int n, IF0 f) {
return repFToSet(f, n);
}
static interface IF0 {
A get();
}
}