# Slash2Dash.py
""" Solicits a slash-date and prints
the equivalent dash-date.
"""

x = raw_input('Enter a valid slash-date:  ')
n = len(x)
# Location of the first '/'
# Compute n1 so that x[n1]=='/' is True.
# The first slashis either in position 1 or 2
if x[1]=='/':
    n1 = 1
else:
    n1 = 2
    
# Location of the second '/'.
# Compute n2 so that x[n2]=='/' is True.
# The second slash is either in position n-3 or n-5
if x[n-3]=='/':
    n2 = n-3
else:
    n2 = n-5
    
# The day slice...
day = x[:n1]
if len(day)==1:
    # Add a '0' if the day is a single digit
    day = '0' + day
else:
    day = x[:n1]
    
# The month slice...
if n2==n1+3:
    # Add a '0' if the month is a single digit
    month = x[n1+1:n2]
else:
    month = '0' + x[n1+1:n2]
    
# The year slice...
year = x[n2+1:]
if len(year)==2 and int(year)<=16:
    # This 2-digit year is from the 1900's
    year = '20' + year
if len(year)==2 and int(year)>16:
    # This 2-digit year is from the 2000s
    year = '19' + year
    
prettyDate = day + '-' + month + '-' + year
print prettyDate