main
(h
,m
,s
){scanf("%dh%dm%ds",&h
,&m
,&s
);s
+=h
*3600+m
*60;h
=s
/3600;m
=s
/60;printf("%02d:%02d:%02d",h
%24,m
%60,s
%60);}
bWFpbihoLG0scyl7c2NhbmYoIiVkaCVkbSVkcyIsJmgsJm0sJnMpO3MrPWgqMzYwMCttKjYwO2g9cy8zNjAwO209cy82MDtwcmludGYoIiUwMmQ6JTAyZDolMDJkIixoJTI0LG0lNjAscyU2MCk7fQo=