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In addition, there are two toll free hotlines, one for emergency assistance that is called by 214 unique community members, and another for information about various community events that is called by 673 unique community members. The full calling record for the community is listed here.
You are a journalist who has been given the calling record by a whistleblower inside NSA. You know that the targeting has been carried out but you don't know the phone number of the targeted individual. To get a sense of how many people fall under the dragnet when this one person is targeted, find the number of 2hop connections for the following phone numbers, and report the average: 1 , 17, 793, 1200, 3402
Assumptions
1 2 3 4 5 6 7 8 

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Consider the above diagram, perform a depth first search starting at \(A\). Let \(T_{n}\) be the number of tree edges, \(B_{n}\) the number of back edges, and \(F_{n}\) be the number of forward edges. What is the value of \((T_{n}+B_{n})F_{n}\)?
To guarantee the same solution, whenever deciding which node to pick, choose a node whose label occurs earliest in the alphabet.
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That is, from \((x, y)\) George can go to \((x+1, y)\), \((x1, y)\),\( (x, y+1)\), or \((x, y1)\).
George can access any point \((x,y)\) where the sum of the digits of \(x\) \(+\) the sum of the digits of \(y\) is \(\leq 19\).
How many points can George access if he starts at \((0,0)\) including \((0,0)\) itself?
Explicit Examples
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