【杭电】[5747]Aaronson

【杭电】[1052]Tian Ji -- The Horse Racing

【Codeforces】[698A]Vacations

【Codeforces】[629B]Far Relative’s Problem

【POJ】[1328]Radar Installation

【杭电】[1789]Doing Homework again

【杭电】[2124]Repair the Wall

【杭电】[1009]FatMouse' Trade

【NYOJ】[1143]小珂的苦恼

【POJ】[1006]Biorhythms

【Codeforces】[580B]Kefa and Company

【Codeforces】[599B]Spongebob and Joke

【Codeforces】[612B]HDD is Outdated Technology

【Codeforces】[597B]Restaurant

【Codeforces】[615A]Bulbs