program uradnici;

var

zoznam: array[1..100000,1..100000] of longint;
cesta: array[1..100000,1..100000] of longint;
fronta: array[1..100000] of longint;

i,i1,i2,i3,a,b,c,n: longint;

begin

readln(n);

for i:=1 to n-1 do begin
readln(a,b);
if a<b then begin
inc(zoznam[a,1]);
zoznam[a,zoznam[a,1]]:=b;
end

else begin
inc(zoznam[b,1]);
zoznam[b,zoznam[b,1]]:=a;
end;
end;

for i:=1 to 10 do begin
for i1:=1 to 10 do
write(zoznam[i,i1]);
writeln;
end;
end.