摘要:
"2154: Crash的数字表格" 思路: 莫比乌斯反演+整除分块 代码: pragma GCC optimize(2) pragma GCC optimize(3) pragma GCC optimize(4) include using namespace std; define y1 y11 阅读全文
摘要:
"3529: [Sdoi2014]数表" 思路: 莫比乌斯反演+整除分块+树状数组维护前缀和 代码: pragma GCC optimize(2) pragma GCC optimize(3) pragma GCC optimize(4) include using namespace std; d 阅读全文
摘要:
"2820 YY的GCD" 思路: 莫比乌斯反演+整除分块 代码: pragma GCC optimize(2) pragma GCC optimize(3) pragma GCC optimize(4) include using namespace std; define y1 y11 defi 阅读全文