#include <bits/stdc++.h>
#define MOD 998244353
#define mod 1000000007
#define ll long long
#define ull unsigned long long
#define ui unsigned int
using namespace std;
int main()
{
	string s[2 * 10000];
	int i = 0,j = 0;
	while (getline(cin,s[i])) i++;
	while (j != i) 
	{
	    if (i <= 9 && j <= 9 || i >= 10 && j >= 10) cout << " " << j << " " << s[j] << endl;
        if (i >= 10 && j <= 9) cout << "  " << j << " " << s[j] << endl; 
	    
	    j++;
    }
	return 0;
}