1. With regard to the idea of mathematical modeling in coding applications among.
The number of road as an axis, the position of each tree as coordinate points on the number line, and then a coordinate point array subscript linked together, complete model.
2. The problem lies in the pit, "where the number of how many, exactly equal to the set the other two (different) and the number of?" Computer language representation.
E.g. 5 + 1 = 2 + 4,5 = 3,5 calculated by two forms, as long as one kind occurs, 5 belonging to the meaning of the questions numbers satisfying, num ++. But be careful not to let the form of 5 two calculations are such that num ++, but also pay attention to repeat the question.
PS: Luo Gu topic and people are so cute it ~ ~
"You do not think of just how much the whole fish head, part of which is still delicious meat!"
Delicious meat - delicious meat ~
