#P12813. [AMPPZ 2019] Donuts
[AMPPZ 2019] Donuts
Description
A set of integer coordinate points in a plane is a donut, if there exists a midpoint and two radii and (with integer and non-negative radii) such that is precisely the set of all points whose distance from is in the interval . Formally,
$$S = \{(x, y) \in \mathbb{Z} \times \mathbb{Z} : L < \text{dist}((x, y), (a, b)) \leq R\},$$where denotes standard plane distance.
We begin with an empty set and add points one by one. Determine, after every added point, if the set is currently a donut.
Please note an exceptionally low memory limit (8MB) for this problem.
Input Format
The first line of input contains the number of points (). Each of the next lines describes a single added point, giving its coordinates separated by a single space. The coordinates are integers of absolute value not greater than 5000. All the given points are distinct.
Output Format
For every point output (in a separate line) , if after adding this point the set is a donut, and , if it isn’t.
12
4 1
3 2
3 0
2 3
1 0
0 1
1 2
2 -1
2 2
3 1
2 0
1 1
NIE
NIE
NIE
NIE
NIE
NIE
NIE
TAK
NIE
NIE
NIE
TAK
Hint
Example: The example is given only for explaining the input format, and it obviously does not satisfy the condition (though it satisfies all the others). Your program will not be checked on the example test.
京公网安备 11011102002149号