#include<iostream>
#include<string>
using namespace std;
int main(){
	string a[101];
	string b,lng = "",sho = "";
	int c = 0,sh = 100,lo = 0; 
	getline(cin,b);
	for(int i = 0;i <= b.length();i++){
		if((b[i] >= 'a' and b[i] <= 'z') or (b[i] >= 'A' and b[i] <= 'Z')){
			a[c] = a[c] + b[i];
		}
		if(b[i] == ' ' or b[i] == '.' or b[i] == ','){
			c++;
		}
	}
	for(int i = 0;i < c;i++){
		if(a[i].length() < sh){
			sh = a[i].length();
			sho = a[i];
		}
		if(a[i].length() > lo){
			lo = a[i].length();
			lng = a[i];
		}
	}
	cout<<lng<<endl<<sho;
	
	return 0;
}

什么肥事？？？