#include <bits/stdc++.h>

using namespace std;

int main () {
	string s;
	getline(cin,s);
	s += ' ';
	int len = s.size();
	int mxn = 0 , mnn =200010;
	string mxs = "";
	string mns = "";
	string s1 = "";
	for (int i = 0;i < len;i++) {
		if (s[i] != ' ' && s[i] != ',') {
			s1 += s[i];
		}else {
			int g = s1.size();
			if (g > mxn) {
				mxn = g;
				mxs = s1;
			}
			if (g < mnn) {
				mnn = g;
				mns = s1;
			}
			s1 = "";
		}
	}
	cout << mxs << endl;
	cout << mns << endl;

	
	return 0;
	
}