摘要:
水题...忘了取模就没1A了....---------------------------------------------------------------------------#includeusing namespace std;const int MOD = 5000011;const... 阅读全文
摘要:
速度居然#2...目测是因为我没用long long..求∑ lcm(i, j) (1 using namespace std;typedef long long ll;const int maxn = 10000009;const int MOD = 100000009;bool check[m... 阅读全文