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Problems
 
 
# Name    
A
standard input/output
1 s, 256 MB
Submit  x73939
B
standard input/output
1 s, 256 MB
Submit  x11887
C
standard input/output
2 s, 256 MB
Submit  x4174
D
standard input/output
1 s, 256 MB
Submit  x3636
E
standard input/output
4 s, 256 MB
Submit  x4318
Complete problemset
 
 
 
 
Questions about problems
 
 
# Party When Question Answer
   
2016-01-23 19:01:39 Announcement Problem C. Watering Flowers
*****
You have to set such $r_1$ and $r_2$ that all the flowers are watered, that is, for each flower, the distance between the flower and the first fountain doesn't exceed $r_1$, or the distance to the second fountain doesn't exceed $r_2$. It's OK if some flowers are watered by both fountains.