C++
#1 536
#2 148
#3 32
#4 32
#5 27
#6 27
#7 15
#8 12
#9 10
#10 6
#11 6
#12 5
#13 4
#14 3
#15 2
#16 2
#17 1
#18 1
#19 1
#20 1