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519B.cpp
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519B.cpp
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#include<bits/stdc++.h>
using namespace std;
int main()
{
int n;
cin>>n;
vector <int> v,v1,v2;
for(int i=0;i<n;i++)
{
int x;
cin>>x;
v.push_back(x);
}
sort(v.begin(),v.end());
for(int i=0;i<n-1;i++)
{
int y;
cin>>y;
v1.push_back(y);
}
sort(v1.begin(),v1.end());
for(int i=0;i<n;i++)
{
if(v[i]!=v1[i])
{
cout<<v[i]<<endl;
break;
}
}
for(int i=0;i<n-2;i++)
{
int z;
cin>>z;
v2.push_back(z);
}
sort(v2.begin(),v2.end());
for(int i=0;i<n-1;i++)
{
if(v1[i]!=v2[i])
{
cout<<v1[i]<<endl;
break;
}
}
return 0;
}