from datetime import datetime

currentyear = 2021
currentmonth = 2
currentday = 10

def validate_age(DOB):
    current_date = datetime(currentyear, currentmonth, currentday)
    day, month, year = map(int, DOB.split('-'))
    dob_date = datetime(year, month, day)
    age_in_years = current_date.year - dob_date.year - ((current_date.month, current_date.day) < (dob_date.month, dob_date.day))
    return age_in_years



currentyear = 2021
currentmonth = 2
currentday = 10

def validate_age(DOB):
    #your code goes here
    b_year = int(DOB[-4:])
    b_month = int(DOB[-7:-5])
    b_day = int(DOB[:2])
    
    age = currentyear - b_year
    if b_month > currentmonth:
        age -= 1
    elif b_month == currentmonth:
        if b_day > currentday:
            age -= 1
    
    return int(age)