# Ava Smith
# smi01868
# CSCI 1133H (001)
# Assignment 2

#========================
#Purpose: Prints a schedule for oral exams that are ten minutes long with a five minute break between a time range including a lunch break
#Input Parameters: start_time: the begining of oral exam time, end_time: the end of oral exam time, lunch_time: time were there would be a thirty miinute break
#Return Values: returns slots which is an int. Can be any even number from 0 to 44 
#=========================

def oral_exam_sign_up(start_time, end_time, lunch_time):
    slots = 0
    
#Validating inputs
    if(type(start_time) != int or type(end_time) != int or type(lunch_time) != int):
       print("Invalid Input. Parameters must be Integers Ranging 1-12")

       return slots
    elif(1 >= start_time >= 12 or 1 >= end_time >= 12 or 1>= lunch_time >= 12):
        print("Invalid Input. Parameters must be Integers Ranging 1-12")
        return slots

    
    while start_time != end_time:
       
        if( start_time != lunch_time):
            print('{0}:00-{0}:10'.format(start_time))
            print('{0}:15-{0}:25'.format(start_time))
            print('{0}:30-{0}:40'.format(start_time))
            print('{0}:45-{0}:55'.format(start_time))
            slots += 4
        else:
            print('{0}:30-{0}:40'.format(start_time))
            print('{0}:45-{0}:55'.format(start_time))
            slots += 2
        
        if start_time < 12:
            start_time += 1
        else:
            start_time = 1
            

    return slots