program array41;
var
n, i, max, maxid:integer;
arr: array of integer;
begin
readln(n);
arr := new integer[n+1];
for i:=1 to n do
begin
readln(arr[i]);
end;
max :=arr[1];
maxid := 2;
for i:=2 to n do
begin
if (arr[i]+arr[i-1]) > max then
begin
max:=arr[i]+arr[i-1];
maxid :=i;
end;
end;
writeln(maxid-1, ' ',maxid);
end.