Largest prime factor
Time Limit: 5000/1000 MS (Java/Others)
Memory Limit: 32768/32768 K (Java/Others)
Everybody knows any number can be combined by the prime number.
Now, your task is telling me what position of the largest prime factor.
The position of prime 2 is 1, prime 3 is 2, and prime 5 is 3, etc.
Specially, LPF(1) = 0.
Each line will contain one integer n(0 < n < 1000000).
Output the LPF(n).
HDU 2007-11 Programming Contest_WarmUp