uses crt;
var i,j,tong,n,max,vt,m:longint; a:array[1..1000]of longint;
begin
clrscr;
write('n=');readln(n);
for i:=1 to n do
begin
write('Do dai cua day thu ',i,': ');readln(m);
tong:=0;
for j:=1 to m do
begin
write('a[',j,']=');readln(a[i]);
inc(tong,a[i]);
end;
if tong>max then begin max:=tong; vt:=i; end;
end;
writeln('Day co tong lon nhat la day thu ',vt);
readln
end.