摘要:
http://acm.hdu.edu.cn/showproblem.php?pid=1796这篇文章对容斥原理讲解很清楚 http://www.cppblog.com/vici/archive/2011/09/05/155103.htmlView Code 1 #include <iostream> 2 #include<cstdio> 3 #include<string.h> 4 #include<cmath> 5 #define LL long long 6 using namespace std; 7 LL sum,x[21],n; 8 i 阅读全文
posted @ 2012-10-10 17:23
_雨
阅读(221)
评论(0)
推荐(0)