[R] Multiple lapply get-around

[Manoj - Hachibushu Capital]

I am faced with a situation wherein I have to use multiple lapply's. The
pseudo-code could be approximated to something as below:

For each X from i=1 to n
	For each Y based on j=1 to m 
		For each F from 1 to f
			Do some calculation based on Fij
			Store Xi,Yj	= Fij
		End For F
	End for Y
End for X

Is there anyway to optimize the processing logic further? I *guess*
using the multiple lapply already optimizes the logic a little bit but
is there anything else that could be done (apart from the obvious
solution of writing a c-code)?

TIA

Manoj