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树的遍历(前序中序求后序,后序中序求前序)

Uva10917 Walk Through the Forest

容斥原理解决某个区间[1,n]闭区间与m互质数数量问题

括号匹配问题(区间dp)

Codeforces Round #434 (Div. 2, based on Technocup 2018 Elimination Round 1)

UVA10870—Recurrences(简单矩阵快速幂)

UVA12470—Tribonacci (类似斐波那契,简单题)

poj3735—Training little cats(特殊操作转化为矩阵操作)

POJ3150—Cellular Automaton(循环矩阵)

poj3233—Matrix Power Series

Codeforces Round #437 (Div. 2, based on MemSQL Start[c]UP 3.0 - Round 2)