提交时间:2021-05-22 13:47:03

运行 ID: 45

#include<iostream> using namespace std; int main() { int a; cin>>a; cout<<" "<<" "<<a<<" "<<" "<<endl; cout<<" "<<a<<a<<a<<" "<<endl; cout<<a<<a<<a<<a<<a<<endl; return 0; }