AN IT COMPANY

AN IT COMPANY An IT company has decided to divide the work into its ‘n’ employees. So, each working day will be divided into m shifts, every employee will have to work for only one shift in a day (shift numbers from 1 to m). Only ‘k’ employees can work in the office in every shift. Every employee has a preferred shift for work. Every employee will work in his/her preferred shift if the shift is