摘要:
#include #include #include #include #include #include using namespace std; typedef long long LL; const int maxn = 1e6+5; LL n; LL get_Euler(LL x){ LL res = x; ///初始值 for(LL i = 2LL; i ... 阅读全文
posted @ 2019-07-10 10:02
wuliking
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