StringBuilder sb = new StringBuilder();
            string str = Console.ReadLine();
            int i = 0, j = 0;
            while (str[j] == ' ')
                j++;
            while (j<str.Length)
            {
                if (str[j] != ' ')
                {
                    sb.Append(str[j]);
                    j++;
                }
                else
                {
                    while (j < str.Length && str[j] == ' ')
                        j++;

                    if(j != str.Length)
                        sb.Append(' ');
                }
             }
            Console.WriteLine(sb+ "/");