Implemented reading of input and output files for problems.
Implemented reading of input and output files for problems.

ilinum/utacm_icpc_autojudge,chenclee/utacm_icpc_autojudge,ilinum/utacm_icpc_autojudge,chenclee/utacm_icpc_autojudge,chenclee/utacm_icpc_autojudge,ilinum/utacm_icpc_autojudge,ilinum/utacm_icpc_autojudge,chenclee/utacm_icpc_autojudge,ilinum/utacm_icpc_autojudge,chenclee/utacm_icpc_autojudge,chenclee/utacm_icpc_autojudge,ilinum/utacm_icpc_autojudge