#include<bits/stdc++.h>
using namespace std;
int main()
{
	int n=0,i,j;
	string s[200001];
	while(getline(cin,s[++n]));
	for(i=1;i<=n;i++)
	{
		for(j=1;j<=log10(n)-log10(i);i++)
		{
			cout<<" ";
		}
		cout<<i<<" ";
		cout<<s[i]<<endl;
	}
    return 0;
}