using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace CalcExpression
{
    class CalcExpression
    {
        public static List<string> rawExpression = new List<string>();

        public static void ReadExpression()
        {
            string input = Console.ReadLine();


            string tmp = null;
            for (int i = 0; i < input.Length; i++)
            {

                if(input[i]=='.' || ('0'<=input[i] && input[i]<='9'))
                {
                    tmp+=input[i];
                }
                else
                {
                    if (tmp != null)
                    {
                        rawExpression.Insert(rawExpression.Count, tmp);
                        tmp = null;
                    }
                    if (input[i] == '(' || input[i] == ')')
                        rawExpression.Insert(rawExpression.Count, input.Substring(i, 1));
                    else
                        if (input[i] == 'p')
                            rawExpression.Insert(rawExpression.Count, input.Substring(i, 3));
                        else
                            if (input[i] == 's')
                                rawExpression.Insert(rawExpression.Count, input.Substring(i, 4));
                            else
                                if (input[i] == 'l')
                                    rawExpression.Insert(rawExpression.Count, input.Substring(i, 2));
                                else
                                    if (input[i] == '+' || input[i] == '-' || input[i] == '*' || input[i] == '/')
                                        rawExpression.Insert(rawExpression.Count, input.Substring(i, 1));
                }
            }
            if (tmp != null)
                rawExpression.Insert(rawExpression.Count, tmp);
        }
        public static double CalcPow(double b, double power)
        {
            return Math.Pow(b, power);
        }
        public static double CalcSqrt(double num)
        {
            return Math.Sqrt(num);
        }
        public static double CalcLn(double num)
        {
            return Math.Log(num);
        }

        public static Queue<double> q = new Queue<double>();
        public static Stack<double> st = new Stack<double>();

        public static double CalcExp(List<string> str)
        {

            for (int i = 0; i < str.Count; i++)
            {
                switch (str[i])
                {
                    case "sqrt":
                        q.Enqueue(CalcSqrt(double.Parse(str[i+2])));
                        i+=3;
                        break;
                    case "pow":
                        q.Enqueue(CalcPow(double.Parse(str[i + 2]), double.Parse(str[i + 3])));
                        i += 4;
                        break;
                    case "ln":
                        q.Enqueue(CalcLn(double.Parse(str[i + 2])));
                        i += 3;
                        break;
                    case "(":
                        int lenght = 0;
                        while (str[i + lenght] != ")")
                            lenght++;


                        break;
                }
            }
            return 0;
        }

        static void Main()
        {
            ReadExpression();



            for (int i = 0; i < rawExpression.Count; i++)
            {
                Console.WriteLine(rawExpression[i]);
            }
        }
    }
}