#include <bits/stdc++.h>
using namespace std;
int main() {
// your code goes here
int t,n,i,j,k,g,h,q,st,en,mi;
vector<int> a,b,c;
cin>>n;
for(i=0;i<n;i++)
{
cin>>g;
a.push_back(g);
}
sort(a.begin(),a.end());
for(i=0;i<n-1;i++)
{
cin>>g;
b.push_back(g);
}
sort(b.begin(),b.end());
k=a[n-1];
for(i=0;i<n-1;i++)
{
//cout<<b[i]<<" "<<a[i]<<"\n";
if(b[i]!=a[i])
{
k=a[i];
break;
}
}
cout<<k<<"\n";
for(i=0;i<n-2;i++)
{
cin>>g;
c.push_back(g);
}
sort(c.begin(),c.end());
k=b[n-1];
for(i=0;i<n-1;i++)
{
if(b[i]!=c[i])
{
k=b[i];
break;
}
}
cout<<k<<"\n";
return 0;
}
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