program networkip;
const
fin='networkip.in';
fou='networkip.out';
var
a:array[1..1000,1..32]of integer;
c,b:array[1..32]of longint;
n1,n2:array[1..4]of longint;
st,s:string;
k,x,y,l,p,q,n,i,j:longint;
f1,f2:text;


function num(st:string):longint;
var
x,l,i:longint;
begin
x:=0;
 l:=length(st);
 for i:=1 to l do
  x:=x*10+ord(st[i])-48;
  exit(x);
end;

procedure two(x:longint);
var
y,i,j:longint;
begin
i:=8;
fillchar(b,sizeof(b),0);
repeat
 b[i]:=x mod 2;
 x:=x div 2;
 dec(i);
until x=0;
end;


procedure init;
begin
assign(f1,fin);
assign(f2,fou);
reset(f1); rewrite(f2);
readln(f1,n);
for i:=1 to n do
begin
 readln(f1,s);
 l:=length(s);
 for j:=1 to 4 do
 begin
   p:=pos('.',s);
   if p=0 then p:=l+1;
   st:=copy(s,1,p-1);
   x:=num(st);
   two(x);
   for k:=1 to 8 do
   a[i,(j-1)*8+k]:=b[k];
   s:=copy(s,p+1,l-p);
 end;
end;
for i:=1 to 32 do
b[i]:=a[1,i]; x:=32;
end;

procedure main;
begin
for i:=2 to n do
begin
 y:=1;
 while (y<=32)and(b[y]=a[i,y]) do
 inc(y);
 if y-1<x then x:=y-1
end;
end;

begin
init;
main;
for i:=x+1 to 32 do b[i]:=0;
for i:=1 to 4 do
begin
  j:=1;
  while j<=8 do
  begin
   c[j]:=b[(i-1)*8+j];
   inc(j);
  end;
  for j:=8 downto 1 do
  n1[i]:=c[j]*trunc(exp((8-j)*ln(2)))+n1[i];
end;
for i:=1 to x do b[i]:=1;
for i:=1 to 4 do
begin
  j:=1;
  while j<=8 do
  begin
   c[j]:=b[(i-1)*8+j];
   inc(j);
  end;
  for j:=8 downto 1 do
  n2[i]:=c[j]*trunc(exp((8-j)*ln(2)))+n2[i];
end;

for i:=1 to 3 do
write(f2,n1[i],'.');
writeln(f2,n1[4]);
for i:=1 to 3 do
write(f2,n2[i],'.');
write(f2,n2[4]);
close(f1); close(f2);
end.