UVa OJ 167 The Sultan’s Successors
UVa OJ 200 Rare Order
UVa OJ 11686 Pick up sticks
* UVa OJ 1103 Ancient Messages
SPOJ ADACYCLE Ada and Cycle
* Codeforces 1037E Trips, 解答
POJ 3481 Double Queue
* UVa OJ 12096 The SetStack Computer
UVa OJ 11991 Easy Problem from Rujia Liu?
Codeforces 1110B Tape
* Codeforces 1118C Palindromic Matrix
'*' 代表有點麻煩(?)的題目