#include <bits/stdc++.h>
#define MAX 1000
using namespace std;
int main(){
string data[MAX],n;
int len = 0;
int maxSize = -1,minSize = MAX;
while(getline(cin,n)){
data[len++] = n;
int s = n.size();
if(s > maxSize)
maxSize = s;
else if(s < minSize)
minSize = s;
}
for(int i = 0; i < len; i++){
if(data[i].size() == minSize)
cout<<data[i]<<endl;
}
for(int i = 0; i < len; i++){
if(data[i].size() == maxSize)
cout<<data[i]<<endl;
}
}

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