摘要：hhhh Code #include<cstdio> #include<vector> using namespace std; vector<int>ans; int main() { int n; scanf("%d",&n); while(n) { n--; if(n%3==0) ans.pu 阅读全文

摘要：C. Friends and Gifts time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output There are nn friend 阅读全文