// Comment this line.
int i = 42;
 
// Uncomment this line.
//int i = 42;
 
// Comment these lines.
using System;
public class HelloWorld {
    public static void Main(string[] args) {
	Console.Write("Hello World!");
    }
}
 
// Uncomment these lines.
//using System;
//public class HelloWorld {
//    public static void Main(string[] args) {
//    Console.Write("Hello World!");
//    }
//}
 
// Fix this.
stirng comment;
 
// Fix this.
private static readonly start DateTime = new DateTime.Now;
 
// Fix this.
int Second = 2;
int First = 1;
 
// Fix this.
private static readonly DateTime start; = new DateTime.Now
 
// Fix this.
start private static readonly DateTime = new DateTime.Now;
 
// Fix this.
int Fifth = 5;
int First = 1;
int Second = 2;
int Third = 3;
int Forth = 4;
 
// Delete this line.
int mistake = -1;
 
// Delete these lines.
int mistake1 = -1;
int mistake2 = -1;
int mistake3 = -1;
int mistake4 = -1;