Cho một dãy gôm n phần tử. Hãy nhập vào từ bàn phím số phần tử và giá trị từng phần tử. Hãy tính tổng các phần tử dương( âm) của dãy

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Program baitap;
Uses crt;
Var B:array[1..200] of integer;
      a,d,n,i:integer;
Begin
Clrscr;
Write('Nhap n:'); Readln(n);

a:=0; d:=0;
For i:=1 to n do
     Begin
     Write('B[',i,']=');

     Readln(B[i]);
     If B[i]<0 then a:=a+B[i];
     If B[i]>0 then d:=d+B[i];
     End;

Writeln('Tong cua cac phan tu duong=',d);
Writeln('Tong cua cac phan tu am=',a);
Readln
End.

program b4;
uses crt;
var a:array[1..500]of integer;
    n,i,Td,Ta:integer;
Begin
        clrscr;
        write('n = ');readln(n);
        for i:=1 to n do
        begin
                write('A[',i,'] = ');readln(a[i]);
                if A[i]>0 then Td:=Td+A[i];
                if A[i]<0 then Ta:=Ta+A[i];
        end;
        writeln('Tong cac phan tu duong: ',Td);
        write('Tong cac phan tu am: ',Ta);
        readln
End.

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giup e voi I/ Supply the correct form of the verbs in brackets 1. You (think) ……………………… collecting stamps costs much money? 2. Every year, my mother (give) ……………………… me a nice doll on my birthday. 3. Jenny says she loves collecting pens but she (not/continue) ……………………… this hobby from next year. 4. If you wash your hands more, you (have)……………………. less chance of catching flu. 5. Getting plenty of rest is very good. It (help)…………………. you to avoid depression. 6. Mr. John (be) ……………………… principal of our school since last year. 7. I (see) ……………………… a car accident on this corner yesterday. 8. We like (come)……………………to school by bus, but we hate (stand)………………………. and (wait) …………………… in the rain. 9. ……………………… (you/ ever/ meet) anyone famous? 10. My mother (come) ……………………… to stay with us next weekend. 11. When he lived in Manchester, he (work) ……………………… in a bank. 12. We (be) ……………………… students for four years. 13. We are planting trees around our school now. Our school (be) ……………………… surrounded by a lot of green trees. 14. What ……………………… your father usually ……………………… (do) in the evenings? 15. My sister likes (cook) ……………………… very much. She can cook many good foods. 16. My father says when he's retired, he (go) …………………… back to his village to do the gardening. 17. They want (buy) ……………………… some meat for dinner. 18. Linh is my best friend. We (know) ……………………… each other for 5 years. 19. I enjoy (fish) ……………………… because it is relaxing. 20. How about (go) ……………………… to the movie theatre?

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