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

- Add compile option -g in <F3>
  - for segfaults/gdb
    - see https://stackoverflow.com/questions/2876357/determine-the-line-of-code-that-causes-a-segmentation-fault

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

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