#!/usr/bin/env python

import sys
import os
import time
import base

now_sec = lambda : time.time()

sample = '2020-01-23_12.34.56'

len_digit = lambda s: len( base.filter_str( lambda c: c.isdigit(), s ) )

def is_format_delim(delim):
	if len( delim ) <= 1:
		return False
	n = len_digit( delim )
	smp_n = len_digit( sample )
	return n == smp_n or n == smp_n - 2

def sec_to_str(sec, delim=''):
	if is_format_delim( delim ):
		s = sec_to_str( sec ) # 202001223123456
		if len_digit( delim ) < len( s ):
			s = s[ 2: ]
		lst = list( s ) # [ '2', '0', ... ]
		f = lambda c: lst.pop( 0 ) if c.isdigit() else c
		return base.to_str( map( f, delim ), delim='' )

	t = time.localtime(sec)
	
	def v_to_s(v):
		s = str(v)
		w = 4 if len(s) > 2 else 2
		return ('0' * w + s)[-w:]

	return delim.join( map( v_to_s, t[:6] ) )

def str_to_sec(s):
	s = ''.join( map( lambda c: c if c.isdigit() else '-', s ) )

	lst = []
	if '-' in s:
		lst = list( map( int, s.split('-') ) )
	else:
		div = lambda s, n: ( s[:n], s[n:] )

		if len(s) > 2 * 6:
			(t, s) = div(s, 4)
			lst.append( int(t) )
		while s:
			(t, s) = div(s, 2)
			lst.append( int(t) )
	while len(lst) < 9:
		lst.append(0)			

	y = lst[0]
	if y < 100:
		lst[0] += 2000 if y < 50 else 1900

	return time.mktime( time.struct_time(lst) )

def is_date_time_str(s, delim=''):
	if not is_format_delim( delim ):
		delim = sec_to_str( 0, delim )
		if len( s ) == len( delim ) - 2:
			delim = delim[ 2: ]

	if len( s ) != len( delim ):
		return False

	def f(st):
		(s, t) = st
		return s.isdigit() if t.isdigit() else s == t
	return all( map( f, zip( s, delim ) ) )

def sec_to_fn(pre, sec, ext=''):
	name = pre + sec_to_str(sec)
	return name + ( '.' + ext if ext else '' )

def fn_to_sec(fn):
	(name, ext) = os.path.splitext(fn)
	tail_num = lambda s: tail_num( s[:-1] ) + s[-1] if s and s[-1].isdigit() else ''
	return str_to_sec( tail_num(name) )

mon3_lst = [ 'dmy', 'JAN', 'FEB', 'MAR', 'APR', 'MAY', 'JUN', 'JUL', 'AUG', 'SEP', 'OCT', 'NOV', 'DEC' ]

def get_mon3(str_or_int):
	v = str_or_int
	if type( v ) != int:
		v = int( v )
	return mon3_lst[ v ]
		
def date432():
	s = sec_to_str( now_sec(), delim='0000 00 00 000000' )
	lst = s.split()[ : 3 ]	
	lst[ 1 ] = get_mon3( lst[ 1 ] )
	return '/'.join( lst )


def tm60_to_int(tm60):
	if tm60 < 0:
		return -tm60_to_int( -tm60 )

	(H, L) = ( tm60 // 100, tm60 % 100 )
	(H, L) = ( H + L // 60, L % 60 )

	if H > 0:
		H = tm60_to_int( H ) * 60
	return H + L

def int_to_tm60(v):
	if v < 0:
		return -int_to_tm60( -v )

	(H, L) = ( v // 60, v % 60 )

	if H >= 60:
		H = int_to_tm60( H )
	return H * 100 + L

def tm60_to_str(tm60):
	if tm60 < 0:
		return "-" + tm60_to_str( -tm60 )

	f = lambda s: ':'.join( ( f( s[ : -2 ] ), s[ -2 : ] ) ) if len( s ) > 2 else s
	return f( str( tm60 ) )
	
def str_to_tm60(s):
	if s.startswith( '-' ):
		return -str_to_tm60( s[ 1 : ] )
	sum = 0
	for s in s.split( ':' ):
		sum = sum * 100 + int( s )
	return sum

tm60_str_to_int = lambda s: tm60_to_int( str_to_tm60( s ) )

tm60_int_to_str = lambda v: tm60_to_str( int_to_tm60( v ) )

def is_tm60_str(s):
	if s.startswith( '-' ):
		s = s[ 1 : ]
	s = s.replace( ':', '' )
	return s.isdigit()

def tm60_show_sum(tm60_str_lst):
	lst = list( map( tm60_str_to_int, tm60_str_lst ) )

	n = len( lst )
	dif_lst = list( map( lambda i: lst[ i + 1 ] - lst[ i ], range( n - 1 ) ) )

	(a, b) = ( [], [] )
	for i in range( n - 1 ):
		t = a if i % 2 == 0 else b
		t.append( dif_lst[ i ] )

	sum_a = sum( a )
	sum_b = sum( b )
	sum_ab = sum_a + sum_b

	f = lambda lst: list( map( tm60_int_to_str, lst ) )

	lst = f( lst )
	dif_lst = f( dif_lst )
	( sum_a, sum_b, sum_ab ) = f( ( sum_a, sum_b, sum_ab ) )

	for i in range( n ):
		print( lst[ i ] )
		if i < n - 1:
			print( '\t' * ( i % 2 + 1 ) + dif_lst[ i ] )

	print( '-' * 16 )
	print( '\t' + sum_a )
	print( '\t\t' + sum_b )
	print( sum_ab )

if __name__ == "__main__":
	s = sys.stdin.read()
	s = s.replace( '-', ' ' )
	lst = s.split()
	lst = list( filter( is_tm60_str, lst ) )
	tm60_show_sum( lst )

# EOF