Problem description Petya loves lucky numbers. Everybody knows that positive integers are lucky if their decimal representation doesn't contain digits ...
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其他好文 时间:
2018-06-01 20:41:17
阅读次数:
237
题目描述 You are given an integer N. Find the number of the positive divisors of N!, modulo 109+7.Constraints1≤N≤103 输入 The input is given from Standard I ...
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其他好文 时间:
2018-05-31 23:02:18
阅读次数:
181
问题 G: Digit Sum II 题目描述 For integers b(b≥2) and n(n≥1), let the function f(b,n) be defined as follows:·f(b,n)=n, when n<b·f(b,n)=f(b,floor(n?b))+(n mo ...
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其他好文 时间:
2018-05-29 22:57:20
阅读次数:
175
Problem description We consider a positive integer perfect, if and only if the sum of its digits is exactly 10. Given a positive integer k, your task ...
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其他好文 时间:
2018-05-29 15:01:09
阅读次数:
125
Write a program to check whether a given number is an ugly number. Ugly numbers are positive numbers whose prime factors only include 2, 3, 5. Example ...
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其他好文 时间:
2018-05-28 00:53:30
阅读次数:
139
Description Some positive integers can be represented by a sum of one or more consecutive prime numbers. How many such representations does a given po ...
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其他好文 时间:
2018-05-26 12:57:12
阅读次数:
152
评价指标: 准确率 (Accuracy),混淆矩阵 (Confusion Matrix),精确率(Precision),召回率(Recall),平均正确率(AP),mean Average Precision(mAP),交除并(IoU),ROC + AUC,非极大值抑制(NMS)。 1、准确率 (A ...
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其他好文 时间:
2018-05-22 14:44:53
阅读次数:
3021
I have seen many videos that hate Trump on youtube and sayings against Trump on Quora, while I see many positive comments about Trump on Zhihu, which ...
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其他好文 时间:
2018-05-20 15:23:00
阅读次数:
172
41. First Missing Positive Given an unsorted integer array, find the smallest missing positive integer. Example 1: Example 2: Example 3: Note: Your al ...
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其他好文 时间:
2018-05-20 15:19:29
阅读次数:
180
Given a positive integer n, generate a square matrix filled with elements from 1 to n2 in spiral order. Example: Input: 3 Output: [ [ 1, 2, 3 ], [ 8, ...
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其他好文 时间:
2018-05-20 10:49:51
阅读次数:
148