提交时间:2026-05-21 19:52:15

运行 ID: 441446

#include<bits/stdc++.h> using namespace std; main(){ char c; cin>>c; cout<<" "<<c<<endl; cout<<" "<<c<<c<<c<<endl; cout<<c<<c<<c<<c<<c<<endl; cout<<" "<<c<<c<<c<<endl; cout<<" "<<c<<endl; return 0; }