题目链接：http://exam.upc.edu.cn/problem.php?id=5095题目：题目描述You’re playing hopscotch! You start at the origin and your goal is to hop to the lattice point (N, N). A hop consists of going from lattice poi...
题目链接：http://exam.upc.edu.cn/problem.php?id=4979题目：题目描述Your friend from Manhattan is visiting you in Amsterdam. Because she can only stay for a short while, she wants to see as many tourist attracti...
题目链接：http://exam.upc.edu.cn/problem.php?id=5579题目：题目描述Snuke is having another barbeque party.This time, he will make one serving of Skewer Meal.He has a stock of N Skewer Meal Packs. The i-th Skewe...