Week 4: Data Structures & Searching (練習題)
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[UVa OJ 167 The Sultan’s Successors](https://uva.onlinejudge.org/external/1/167.pdf)
[UVa OJ 200 Rare Order](https://uva.onlinejudge.org/external/2/200.pdf)
[UVa OJ 11686 Pick up sticks](https://uva.onlinejudge.org/external/116/11686.pdf)
\* [UVa OJ 1103 Ancient Messages](https://uva.onlinejudge.org/external/11/1103.pdf)

[SPOJ ADACYCLE Ada and Cycle](https://www.spoj.com/problems/ADACYCLE/)
\* [Codeforces 1037E Trips](http://codeforces.com/contest/1037/problem/E), [解答](http://codeforces.com/contest/1037/submission/42550790)

[POJ 3481 Double Queue](http://poj.org/problem?id=3481)
\* [UVa OJ 12096 The SetStack Computer](https://uva.onlinejudge.org/external/120/12096.pdf)

[UVa OJ 11991 Easy Problem from Rujia Liu?](https://uva.onlinejudge.org/external/119/11991.pdf)

[Codeforces 1110B Tape](https://codeforces.com/problemset/problem/1110/B)
\* [Codeforces 1118C Palindromic Matrix](https://codeforces.com/problemset/problem/1118/C)

> '\*' 代表有點麻煩(?)的題目