var i,t,j,n,m,k,sum,max,a,b,c : integer;
    s : array[1..100] of integer;
begin
readln(t);
for i:=1 to t do
    begin
    readln(n, m);
    for j:=1 to n do begin read(s[j]); end;
    for a:=n+1 to m+n do begin read(s[a]); end;
    k:=n+m;
    max:=s[1];
    sum:=0;
    for b:=1 to k do begin if s[b] > max then max:=s[b]; end;
    for c:=1 to k do begin sum:=sum+s[c]; end;
    sum:=sum-max;
    writeln('Case ',i,': ',sum);
    end;
end.
 

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MiAKMSAxIAo1IAozIAozIDIgCjkgMTEgNCAKMTAgMTI=

2 
1 1 
5 
3 
3 2 
9 11 4 
10 12