Given 4 numbers A,B,C and D. If A ^ B > C ^ D print "YES" otherwise, print "NO".

Input : Only one line containing 4 numbers A,B,C and D (1 ≤ A,C ≤ 10^7 ) , (1 ≤ B,D ≤ 10^12 )

Output : Print "YES" or "NO" according to the problem above.

Problem Link — Here

I think I have to mod this. But what's the real approach?

TIA.