有亿点复杂^_^

#include <bits/stdc++.h>
using namespace std;
int main(){
char n;
cin >> n;
printf(" %c\n",n);
printf(" %c%c%c\n",n , n , n);
printf("%c%c%c%c%c\n",n , n , n , n , n);
printf(" %c%c%c\n",n , n , n);
printf(" %c\n",n);
return 0;
}