1

#include <iostream>
#include <cstring>
using namespace std;

int main() {
	string st, max_st, min_st;
	int max_l = -1, min_l = 1000, t, k;
	getline(cin, st);
	st = " " + st + " ";
	for (int i = 0; i < st.length() - 1; i++) {
		if (st[i] != ' ' && st[i] != ',' && st[i] != '.') {
			t = 1;
			k = i;
			while (st[i + 1] != ' ' && st[i + 1] != ',' && st[i + 1] != '.') {
				t++;
				i++;
			}
			if (t > max_l) {
				max_l = t;
				max_st = st.substr(k, t);
			}
			if (t < min_l) {
				min_l = t;
				min_st = st.substr(k, t);
			}
		}
	}
	cout << max_st << endl << min_st;
	return 0;
}