提交时间:2021-06-20 11:42:52

运行 ID: 20789

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