Codeforces Round #150 (Div. 2)
A. Dividing Orange
- 模拟。
B. Undoubtedly Lucky Numbers
- 暴力枚举\(x、y\)。
C. The Brand New Function
- 固定左端点,右端点右移时,\(f(l,r)\)是递增的,并且最多\(\log{10^6}\)种值。
D. Hydra
- 枚举边,每个端点最多枚举\(h+t+1\)个点。
E. Colorado Potato Beetle
- 考虑压缩整个网格。
- 离散的图为\(3n\cdot 3n\),然后bfs即可。
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