program bai_giai;
var f,g:text;
A:array[1..100000] of longint;
n,i,t,kt:longint;
begin
Assign(f,'DAYSO.INP'); reset(f);
Assign(g,'DAYSO.OUT'); rewrite(g);
readln(f,n);
for i:=1 to n do read(f,A[i]);
kt:=1; t:=A[1];
for i:=2 to n do
if A[i]>A[i-1] then t:=t+A[i]
else begin kt:=0; break; end;
if kt=0 then writeln(g,0)
else begin
writeln(g,'La day tang');
writeln(g,'Tong: ',t);
end;
close(f); close(g);
end.