Esko Senior Software Engineer interview questions

Got call from consultancy.Interview started with objective test on C++ 35 Questions in 30 Minutes,Very Lengthy Questions.Many Questions were on Template Serialization. 2nd Round was Coding round . One Question 4 hours,The Question was not related to any algorithm . An Excel data was given which has City , GMT time, Day Light saving ,DST start, DST end for many cities .Given source city time and date ,problem was to find out Destination city time and date.I found 90% of the time got in reading the excel and parsing the strings. I got very tired and hungry after that , so i left the place.