uses crt;
var a:array[1..100]of integer;
i,n,t:integer;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
t:=0;
for i:=1 to n do
t:=t+a[i];
writeln('Tong cua day so la: ',t);
readln;
end.

giúp mình vớiiiii ạ 

Một người đi xe máy từ A đến B với vận tốc 25km/h. Lúc về người đó đi với vận tốc 30km/h, nên thgian về ít hơn thgian đi 20 phút. tính quãng đường AB ?

I disagree with the idea that robots will only bring benefits to people in the future. Robots will also have some negative influences . Firstly, they will be very expensive and we will spend too much money buying and fixing them. Secondly, robots in factories will be able to do  everything the workers do, so robots will make them jobless. Thirdly, robots in our homes will do all the housework for us, so we will become lazy and inactive. In short, robots will do many things for us, but they may not improve the quality of our lives.