1.1.1 Purpose Premature optimization is the root of all evil. – D.E. Knuth Efficient code can be well-structured and clean code, based on on a sound overall architecture and sound algorithms. Efficient code can be highly implementation-code that byp
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很好的linux命令行学习和参考书籍 Part 1 – Introduction.........................................................................1 1 – Introduction................................................................................................2 Why Use The Command
A. Bad Ugly Numbers
题目链接-A. Bad Ugly Numbers
题目大意
输出一个位数为n的数s，且该数每一位数字都不能被s整除
解题思路
贪心
如果n为1，那么无论s是哪个数字都必定能整除自身
如果n不为n，那么577…77和233…33这两种类型的都满足题意
附上代码
#include
#define int long long
#define lowbit(x) (x &(-x))
using namespace std;
const int INF=0x3f
