Programming contests

ILBPM9987L Informatikai versenyfeladatok, 2023. ősz

November 17, 2023 8:00 PM – January 31, 2024 11:59 PM

Points in Figures: Rectangles, Circles, and Triangles

Given a list of figures (rectangles, circles, and triangles) and a list of points in the x-y plane, determine for each point which figures (if any) contain the point.

Input Specification

There will be n (≤ 10) figure descriptions, one per line. The first character will designate the type of figure (“r”, “c”, “t” for rectangle, circle, or triangle, respectively). This character will be followed by values which describe that figure:

  • For a rectangle, there will be four real values designating the x-y coordinates of the upper left and lower right corners.
  • For a circle, there will be three real values, designating the x-y coordinates of the center and the radius.
  • For a triangle, there will be six real values designating the x-y coordinates of the vertices.

The end of the list will be signalled by a line containing an asterisk in column one.

The remaining lines will contain the x-y coordinates, one per line, of the points to be tested. The end of this list will be indicated by a point with coordinates 9999.9 9999.9; these values should not be included in the output.

Points coinciding with a figure border are not considered inside.

Output Specification

For each point to be tested, write a message of the form

Point i is contained in figure j

for each figure that contains that point. If the point is not contained in any figure, write a message of the form

Point i is not contained in any figure

Points and figures should be numbered in the order in which they appear in the input.

Sample Input

  1. r 8.5 17.0 25.5 -8.5
  2. c 20.2 7.3 5.8
  3. t -1.0 -1.0 10.1 2.2 .4 1.4
  4. r 0.0 10.3 5.5 0.0
  5. c -5.0 -5.0 3.7
  6. t 20.3 9.8 10.0 -3.2 17.5 -7.7
  7. r 2.5 12.5 12.5 2.5
  8. c 5.0 15.0 7.2
  9. t -10.0 -10.0 10.0 25.0 30.0 -10.0
  10. *
  11. 2.0 2.0
  12. 4.7 5.3
  13. 6.9 11.2
  14. 20.0 20.0
  15. 17.6 3.2
  16. -5.2 -7.8
  17. 9999.9 9999.9
download as text file

Output for Sample Input

  1. Point 1 is contained in figure 4
  2. Point 1 is contained in figure 9
  3. Point 2 is contained in figure 4
  4. Point 2 is contained in figure 7
  5. Point 2 is contained in figure 9
  6. Point 3 is contained in figure 7
  7. Point 3 is contained in figure 8
  8. Point 3 is contained in figure 9
  9. Point 4 is not contained in any figure
  10. Point 5 is contained in figure 1
  11. Point 5 is contained in figure 2
  12. Point 5 is contained in figure 6
  13. Point 5 is contained in figure 9
  14. Point 6 is contained in figure 5
  15. Point 6 is contained in figure 9
download as text file


Diagram of sample input figures and points

University of Debrecen; Faculty of Informatics; v. 03/01/2019