http://blog.csdn.net/l2580258/article/details/51319387
void cin_read_nosync() { freopen("data.txt","r",stdin); std::ios::sync_with_stdio(false); for (int i=0;i<MAXN;i++) std::cin >> numbers[i]; }
C++-cin与scanf cout与printf效率问题
原文：http://www.cnblogs.com/Aragaki/p/6963699.html
