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IOPC1204 - A function over factors |
A function f is defined over natural numbers as:
f(N) = ∑ di μ(di)
Here the summation is over di, all positive integers which are factors of N.
μ(n) is the Möbius function defined in the following way: If there exists a prime p such that p2 is a factor of n, then μ(n)=0. Otherwise, if n has an odd number of prime factors, μ(n)=-1. If not, μ(n)=1. Thus the first few values for μ(n) (starting from 1) are 1, -1, -1, 0, -1, 1, -1, 0...
Given an integer X (0 <= X <= 1012), find the smallest natural number N such that |f(N)|>X.
Input
The first line of the input contains T, the number of test cases (T <= 1000). Following this are T lines, each containing an integer X (0 <= X <= 1012) corresponding to the test case.
Output
For each test case in the input, output the smallest natural number N such that |f(N)|>X.
Example
Input: 2 1 2 Output: 3 5
Added by: | Raziman T V |
Date: | 2012-01-20 |
Time limit: | 1s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | All except: ASM64 |
Resource: | http://www.codechef.com/IOPC2012/ |
hide comments
2016-07-20 05:51:57 Piyush Kumar
Is it just me or the TL is a bit too tight? |
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2015-01-09 20:33:10 [Lakshman]
Is it possible to get AC with Haskell? |
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2013-03-23 18:10:08 raunakrocks
AC!! [spoiler removed] Last edit: 2013-03-23 18:26:15 |