CF1331B Limericks
CF344A Magnets
CF765A Neverending competitions
CF981A Antipalindrome
CF709A
CF133A HQ9+
CF1350A Orac and Factors
CF734A Anton and Danik
CF894A QAQ
CF48A Rock-paper-scissors
CF798A Mike and palindrome
CF802G Fake News (easy)
CF409F 000001
CF68A Irrational problem
CF41A Translation
CF271A Beautiful Year
CF49A Sleuth
UVA12938 Just Another Easy Problem
CF281A Word Capitalization
CF47A Triangular numbers
UVA455 周期串 Periodic Strings
SP2 PRIME1 - Prime Generator
CF656D Rosetta Problem
CF43A Football
CF898A Rounding
P2788 数学1(math1)- 加减算式
CF52A 123-sequence
UVA100 The 3n + 1 problem
SP27561 GDCOFTI - Greatest Common Divisor Of Three Integers
SP27 SBANK - Sorting Bank Accounts
CF26A Almost Prime
CF1373B 01 Game
CF263A Beautiful Matrix