#include<bits/stdc++.h> using namespace std; int main(){ int n; cin>>n; set<int>v; int ccin; for(int i=1;i<=n;i++){ cin>>ccin; v.insert(ccin); } cout<<v.size()<<endl; for(auto a:v){ cout<<a<<" "; } return 0; }

a

千万别点题，不然会被笑s

#include<bits/stdc++.h> using namespace std; int main() { vector<int> v; int a; cin>>a; for(int i=1;i<=a;i++){ for(int j=1;j<=i;j++){ if(i%j==0)v.push_back(j); } for(int k=0;k<v.size();k++){ cout<<v[k]<<" "; }v.clear(); cout<<endl; } return 0; }

https://www.acgo.cn/application/1679784615526326272

谁会呀