#include<bits/stdc++.h>
using namespace std;
int main(){
	string s,s1,s2,s3;
	int cnt=0,maxx=0,minn=0x3f3f3f;
	getline(cin,s);
	for(int i=0;i<s.size();i++){
		if(s[i]!=' '&&s[i]!=','&&s[i]!='.'){
			cnt++;
			s1+=s[i];
		}
		else{
			cnt=0;
			s1="";
		}
		if(cnt>maxx&&s[i]!=' '&&s[i]!=','&&s[i]!='.'){
			maxx=cnt;
			s2=s1;
		}
		if(cnt<minn&&s[i]!=' '&&s[i]!=','&&s[i]!='.'){
			minn=cnt;
			s3=s1;
		}
	}
	cout<<s2<<"\n"<<s3;
	return 0;
}