ARC049で実際に使ったプログラム。 / C#

A.cs

using System;

class Program
{
    static void Main(string[] args)
    {
        var S = Console.ReadLine();
        var Nums = Console.ReadLine().Split();
        var ret = "";
        for(var i = 0; i < S.Length; ++i )
        {
            var matched = false;
            foreach(var num in Nums )
            {
                if (num == i.ToString() )
                {
                    matched = true;
                    ret += "\"" + S[i];
                }
            }
            if (!matched)
                ret += S[i];
        }
        if (Nums[3] == S.Length.ToString() )
        {
            ret += "\"";
        }

        Console.WriteLine(ret);
    }
}