We thank everyone who participated and we congratulate Yuqiao Huang, who is an undisputed leader this semester. For the Summer, we suggest reviewing all the problems from the Spring and working on the additional problems posted at the bottom of the provided solutions, and the following problem.

• Problem7 Solution received from Yuqiao Huang.

• Problem6 Solution received from Yuqiao Huang.

• Problem5 Solution received from Yuqiao Huang, Ashton Keith, and Naftoli Kolodny.

• Problem4 Solved by only one participant: Ashton Keith, a freshman majoring in math.

• Problem3 Solved completely only by Ashton Keith, a freshman majoring in math. A solution with some details missing was also submitted by Yuqiao Huang.

• Problem2 Solved by only one participant: Yuqiao Huang - a freshman and a math-major.

• Problem1 Solved by only one participant: Yuqiao Huang - a freshman and a math-major.