import sys class Stats: def __init__(self, sequence): # sequence of numbers we will process # convert all items to floats for numeri...
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编程语言 时间:
2014-07-16 18:06:48
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257
题目Given a binary tree containing digits from0-9only, each root-to-leaf path could represent a number.An example is the root-to-leaf path1->2->3which r...
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其他好文 时间:
2014-07-15 23:21:33
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218
第一次看到段更斐波那契数列的,整个人都不会好了。事后看了题解才明白了一些。首先利用二次剩余的知识,以及一些数列递推式子有下面的至于怎么解出x^2==5(mod 10^9+9),我就不知道了,但是要用的时候可以枚举一下,把这些参数求出来之后就题目就可以转化为维护等比数列。由于前面的常数可以最后乘,所以...
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其他好文 时间:
2014-07-15 22:52:58
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567
Two SumGiven an array of integers, find two numbers such that they add up to a specific target number.The function twoSum should return indices of the...
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其他好文 时间:
2014-07-15 08:45:17
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236
题意:http://acdream.info/problem?pid=1112Problem DescriptionHere is Alice and Bob again !Alice and Bob are playing a game. There are several numbers.Fir...
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其他好文 时间:
2014-07-14 23:51:56
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425
G - Self Numbers(2.2.1)
Time Limit:1000MS Memory Limit:10000KB 64bit IO Format:%I64d & %I64u
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Description
In 1949 the Indian mathematician D.R. Kaprekar discovered...
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其他好文 时间:
2014-07-14 16:18:29
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194
Time Limit:1000MS Memory Limit:10000KB 64bit IO Format:%I64d
& %I64u
Submit Status
Description
Ugly numbers are numbers whose only prime factors are 2, 3 or 5. The sequence
...
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其他好文 时间:
2014-07-14 14:03:02
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206
Combination SumGiven a set of candidate numbers (C) and a target number (T), find all unique combinations inCwhere the candidate numbers sums toT.Thes...
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其他好文 时间:
2014-07-14 10:43:07
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222
Combination Sum IIGiven a collection of candidate numbers (C) and a target number (T), find all unique combinations inCwhere the candidate numbers sum...
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其他好文 时间:
2014-07-14 10:42:22
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192