提交时间:2025-11-22 16:00:20
运行 ID: 362629
#include<iostream> using namespace std; int main() { char a; cin>>a; cout<<" "<<a<<endl; cout<<" "<<a<<a<<a<<endl; cout<<a<<a<<a<<a<<a<<endl; cout<<" "<<a<<a<<a<<endl; cout<<" "<<a<<endl; return 0; }