http://acm.hdu.edu.cn/listproblem.php?vol=1
杭电ACM 1000 A + B Problem
杭电ACM 1001 Sum Problem
杭电ACM 1004 Let the Balloon Rise
杭电ACM 1005 Number Sequence
杭电ACM 1008 Elevator
杭电ACM 1012 u Calculate e
杭电ACM 1013 Digital Roots
杭电ACM 1014 Uniform Generator
杭电ACM 1017 A Mathematical Curiosity
杭电ACM 1019 Least Common Multiple
杭电ACM 1021 Fibonacci Again
杭电ACM 1028 Ignatius and the Princess III
