- Add missing require.
- Add missing require.

icodegame/codecombat,codecombat/codecombat,jeremiahyan/codecombat,jeremiahyan/codecombat,javatlacati/codecombat,icodegame/codecombat,javatlacati/codecombat,javatlacati/codecombat,Zerrien/codecombat,Zerrien/codecombat,kidaa/codecombat,codecombat/codecombat,fabichoi/codecombat,kidaa/codecombat,kidaa/codecombat,codecombat/codecombat,codecombat/codecombat,Zerrien/codecombat,icodegame/codecombat,jeremiahyan/codecombat,Zerrien/codecombat,codecombat/codecombat,jeremiahyan/codecombat,javatlacati/codecombat,fabichoi/codecombat,fabichoi/codecombat,kidaa/codecombat,icodegame/codecombat,javatlacati/codecombat,fabichoi/codecombat