"id","skill"
"0","C"
"0","Python"
"1","Python"
"1","C++"
"1","System Admin"
"2","C"
"2","PHP"
"3","C++"
"4","C++"
"4","C"
"4","Perl"
"5","Perl"
"5","C"
"7","Python"
"7","C"
"7","PHP"
"9","Java"