T1.
Located two unknowns, using the Pythagorean theorem equation listed, we found a square side length must be a multiple of n.
Thus the decomposition of the quality factor n, gone.
T2.
When the period of the color was observed reaching $ \ sqrt {n} $ level when bound not preferable, because even if each of the sub-period not only crab $ n $.
Thus the number of colors to each of the maintenance bit, $ O ({n} n \ sqrt) $
I did not expect how to maintain the examination room, then he hits the violence, in fact, maintain $ \ sqrt {n} $ pointers after each violent jump on it.
T3.
The $ 5 $ 5 * as a chunk, known by the play table, starting from any point in the $ 5 $ 5 * in the end there will be any point to legitimate programs.
Thus in accordance with $ n / 5 $ min parity discussed, we are out of a parity valid path, these paths will be spliced together to get a solution,
My realization seems to be quite disgusting. . . Hit $ 5k $, pressure of the pressure as well as $ 3.8k $. . (Although very good tone)