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

namespace ValidParenthese {

public class Solution {
    public bool IsValid(string s) {
        var result = s.ToCharArray().ToList();
        bool value = true;

        for (int i = 0; i < result.Count; i++) {

            if (result\[i\].ToString().Equals("(")) {

                if (result\[i + 1\].ToString().Equals(")")) {
                    value = true;
                } else {
                    var count = result.Count;

                    if (count >= 3) {

                        var index = result\[i + 1\];

                        if (result\[i + 2\].ToString().Equals(")")) {
                            value = false;
                        } else if ((index.ToString().Equals("{") && result\[i + 2\].ToString().Equals("}"))
                            || (index.ToString().Equals("\[") && result\[i + 2\].ToString().Equals("\]"))) {

                            if (result\[i + 3\].ToString().Equals(")")) {
                                value = true;
                            } else {
                                var ind = result\[i + 2\];

                                if ((ind.ToString().Equals("{") && result\[i + 3\].ToString().Equals("}"))
                                    || (ind.ToString().Equals("\[") && result\[i + 3\].ToString().Equals("\]"))) {

                                    if ((index.ToString().Equals("{") && result\[i + 4\].ToString().Equals("}"))
                                        || (index.ToString().Equals("\[") && result\[i + 4\].ToString().Equals("\]"))) {
                                        if (result\[i + 5\].ToString().Equals(")")) {
                                            value = true;
                                        } else {
                                            value = false;
                                        }
                                    } else {
                                        value = false;
                                    }
                                } else {
                                    value = false;
                                }
                            }
                        }

                    } else {
                        value = false;
                    }


                }

            } else if (result\[

using System;
using System.Collections.Generic;

namespace CalPoints {
class Solution {
public int CalPoints(string[] ops) {
var opsList = new List();
var value = 0;

        foreach (var item in ops) {

            if (item.Equals("+")) {

                var index = int.Parse(opsList\[opsList.Count - 1\]) + int.Parse(opsList\[opsList.Count - 2\]);
                opsList.Add(index.ToString());

                value = 0;

                foreach (var val in opsList) {
                    value += int.Parse(val);
                }

            } else if (item.Equals("D")) {

                var index = int.Parse(opsList\[opsList.Count - 1\]) \* 2;
                opsList.Add(index.ToString());

                value = 0;

                foreach (var val in opsList) {
                    value += int.Parse(val);
                }

            } else if (item.Equals("C")) {

                opsList.RemoveAt(opsList.Count - 1);

                value = 0;

                foreach (var val in opsList) {
                    value += int.Parse(val);
                }

            } else {
                //An integer was added
                opsList.Add(item);

                foreach (var val in opsList) {
                    value += int.Parse(val);
                }
            }

        }

        return value;
    }
}

class CalPoints {
    public static void Main(string\[\] args) {
        var solution = new Solution();
        var space = new char\[\] { ' ' };

        string\[\] ops = Console.ReadLine().Split(space);
        int output = solution.CalPoints(ops);
        Console.Write(output.ToString());
    }
}

}