摘要:
题意:给定N(1 #include#includeusing namespace std;const long long maxn=4100000;long long phi[maxn*2];long long s[maxn],f[maxn];void phi_table(int n){ ... 阅读全文
摘要:
1174: 我是好人4 Time Limit: 1 Sec Memory Limit: 128 MB Submit: 526 Solved: 103 Description 众所周知,我是好人!所以不会出太难的题,题意很简单 给你n个数,问你1000000000(含1e9)以... 阅读全文