I use Segment tree.I can't find anything wrong in my code.Why?

Can't catch where is error. Is there an error in my algorythm?
х - energy quantum, amount of which is calculated by division (power_supply/sqr(d)), where 'power_supply' is amount of energy stored by previous save action and 'd' is an area in which wall segments are enforced. Energy portion for each segment is calculated by formula (d-delta)*x, where delta is a distance from the targeted segment. After energy distribution I just set power_supply to 0. Also energy saving and wall enforcing occurs after energy is generated for time passed from previous action.

Edited by author 11.09.2013 19:50