Update cpp-trung.vim
Update cpp-trung.vim

Set <F2>, <F3> and <F4> to copy filepath to the clipboard

Signed-off-by: Karel Ha <70f8965fdfb04f1fc0e708a55d9e822c449f57d3@gmail.com>

mathemage/CompetitiveProgramming,mathemage/CompetitiveProgramming,mathemage/CompetitiveProgramming,mathemage/CompetitiveProgramming,mathemage/CompetitiveProgramming,mathemage/CompetitiveProgramming