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FERMP - Fermat vs Pythagoras |
Background
Computer generated and assisted proofs and verification occupy a small niche in the realm of Computer Science. The first proof of the four-color problem was completed with the assistance of a computer program and current efforts in verification have succeeded in verifying the translation of high-level code down to the chip level.
This problem deals with computing quantities relating to part of Fermat's Last Theorem: that there are no integer solutions of
an + bn = cn
for n > 2.
The Problem
Given a positive integer N, you are to write a program that computes two quantities regarding the solution of
x2 + y2 = z2
where x, y, and z are constrained to be positive integers less than or equal to N. You are to
compute the number of triples (x,y,z) such that x < y < z
, and they are relatively prime, i.e., have
no common divisor larger than 1. You are also to compute the number of values 0 < p ≤ N
such that p is not part of any triple (not just relatively prime triples).
The Input
The input consists of a sequence of positive integers, one per line. Each integer in the input file will be less than or equal to 1,000,000. Input is terminated by end-of-file.
The Output
For each integer N in the input file print two integers separated by a space. The first integer is the number of relatively prime triples (such that each component of the triple is ≤ N). The second number is the number of positive integers ≤ N that are not part of any triple whose components are all ≤ N. There should be one output line for each input line.
Sample Input
10
25
100
Sample Output
1 4
4 9
16 27
Added by: | Fabio Avellaneda |
Date: | 2013-03-21 |
Time limit: | 3s |
Source limit: | 50000B |
Memory limit: | 1536MB |
Cluster: | Cube (Intel G860) |
Languages: | C C++ 4.3.2 CPP JAVA |
Public source code since: | 2013-04-04 06:00:00 |