The problems in this homework are from Lectures 23 and 24 of  
 Jeff
  Erickson's notes. Each of the five exercises is worth 10 points.
-  Exercise 10 of Lecture 23. (Maximum Flows and Minimum Cuts) 
 -  Exercise 12 of Lecture 23.
 -  Exercise 5 of Lecture 24. (Applications of Maximum Flow)
 -  Exercise 8 of Lecture 24.
 -  Exericse 13 of Lecture 24.  
 
The homework is due in class on Tuesday, April 18.