#include<bits/stdc++.h>
using namespace std;
int main(){
    string str,maxn="",minn="                                                                                                                                                                                        ",cnt="";
    getline(cin,str);
    for(int i=0;i<str.size();i++){
        if(str[i]==' '||str[i]==','||str[i]=='.'){
            if(minn.size()>cnt.size())minn=cnt;
            if(minn.size()<cnt.size())maxn=cnt;
            cnt="";
        }else cnt+=str[i];
    }
    if(cnt.size()<minn.size()&&cnt.size()!=0)minn=cnt;
    if(cnt.size()>maxn.size())maxn=cnt;
    cout<<maxn<<endl<<minn;
}