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 java.util.function.*;
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 java.awt.geom.*;
import javax.imageio.*;
import java.math.*;
import java.time.Duration;
import java.lang.invoke.VarHandle;
import java.lang.invoke.MethodHandles;
class main {
static String formatHours(long ms) { return formatHours(ms, 1); }
static String formatHours(long ms, int decimals) {
double hours = toHours(ms);
String formatted = formatDouble(hours, decimals);
return eq(formatted, "1") ? "1 hour" : formatted + " hours";
}
static double toHours(long ms) {
return ms/(60000.0*60);
}
static String formatDouble(double d, int digits) {
String format = digits <= 0 ? "0" : "0." + rep(digits, '#');
return decimalFormatEnglish(format, d);
}
static String formatDouble(double d) {
return str(d);
}
static boolean eq(Object a, Object b) {
return a == b || a != null && b != null && a.equals(b);
}
static String rep(int n, char c) {
return repeat(c, n);
}
static String rep(char c, int n) {
return repeat(c, n);
}
static List rep(A a, int n) {
return repeat(a, n);
}
static List rep(int n, A a) {
return repeat(n, a);
}
static String decimalFormatEnglish(String format, double d) {
return decimalFormatEnglish(format).format(d);
}
static java.text.DecimalFormat decimalFormatEnglish(String format) {
return new java.text.DecimalFormat(format, new java.text.DecimalFormatSymbols(Locale.ENGLISH));
}
static String str(Object o) {
return o == null ? "null" : o.toString();
}
static String str(char[] c) {
return new String(c);
}
static String str(char[] c, int offset, int count) {
return new String(c, offset, count);
}
static String repeat(char c, int n) {
n = Math.max(n, 0);
char[] chars = new char[n];
for (int i = 0; i < n; i++)
chars[i] = c;
return new String(chars);
}
static List repeat(A a, int n) {
n = Math.max(n, 0);
List l = new ArrayList(n);
for (int i = 0; i < n; i++)
l.add(a);
return l;
}
static List repeat(int n, A a) {
return repeat(a, n);
}
}