using System;
using Con = System.Console;
using System.Collections;

public class Env {

  public static void Main(string [] args) {
    IDictionary env = Environment.GetEnvironmentVariables();

    string key = "USER";
    if (env.Contains(key)) {
      Con.WriteLine("{0}={1}", key, env[key]);
    }

    foreach (string k in env.Keys) {
      Con.WriteLine("{0}={1}", k, env[k]);	
    }
  }
}