#include<bits/stdc++.h>

    using namespace std;

    int main(){
    	vector<string> v;
    	string s;
    	int max,min;
    	max=0,min=1500;
    	while(cin>>s){
    		v.push_back(s);
    		if(s.size()>max) max=s.size();
    		if(s.size()<min) min=s.size();
    	}
    	for(int i=0;i<v.size();i++){
    		if(v[i].size()==min)
    			cout<<v[i]<<endl;
    	}
    	for(int i=0;i<v.size();i++){
    		if(v[i].size()==max)
    			cout<<v[i]<<endl;
    	}
    		
    }