var q,n,w,x:integer;

a,b,c,d,z:array[1..100]of integer;

begin

readln(n);

for q:=1 to n do begin

d[q]:=q;

readln(a[q],b[q],c[q]);

z[q]:=a[q]+b[q]+c[q];

end;

for q:=1 to n-1 do begin

for w:=q to n do

if (z[q]