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ProblemClarification
General I/O?

Please use standard in and standard out!

Input --
Java: Scanner in = new Scanner(new BufferedReader(new InputStreamReader(System.in)));
C: scanf("%d %d", &integer1, &integer2);
C++: int x; cin >> x;

Output --
Java: System.out.println("asdf");
C: printf("%d %d", integer1, integer2);
C++: int x = 5; cout << x << endl;
General Java class names?

Please use the following class names (make sure classes are public):

Problem A - public class A { ... }
Problem B - public class B { ... }
. . .
A - Beehives Are the input graphs connected?

If it does not say they are then you may assume they are not.
I do not know if it is the case or not, your code should handle any graph.
F - Sentry Robots Are robots considered obstacles?

Sorry about delayed response - It is not clear from the statement but I would go with "NO" because of the sentence "there are some obstacles that the robot cannot see through...". I assume robots can see through other robots or something (not explicitly stated)
General What are the time limits? =)

In seconds (per input file)

A 40
B 5
C 15
D 10
E 22
F 10
G 10
H 20
I 15
J 30

(changed A, H and J time limits - that caused one solution to pass - my J, heh)
H - Shares Why is my solution timing out?

I do not know. Even after doubling the time limit, UBC0 and Calgary3 solutions were timing out.

My Java solution with HashMap and BigInteger ran in time.


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