NZEC RUN TIME ERROR

MY program is compiling on my laptop at netbeans and giving me write answer But while i submitting same code at codechef it gives me runtimeNZEC ERROR

HERE IS link: http://www.codechef.com/problems/FGFS and here is my code: http://www.codechef.com/viewsolution/4108826

please help me anybody to get of this error