using System;
using System.Globalization;
using System.Linq;
using System.Collections.Generic;
public class Test
{
public static void Main()
{
string str = "MCHH-1-00001";
string identifier = "MCHH-1-";
int num = int.Parse(str.Substring(identifier.Length));
str = identifier + (++num).ToString("D5");
Console.WriteLine(str);
}
}
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