Program HOC24;

var i,n,k: integer;

a: array[1..32000] of integer;

t: longint;

begin

write('Nhap N: '); readln(n);

for i:=1 to n do 

begin

write('Nhap so thu ',i,': '); readln(a[i]);

end;

t:=0;

for i:=1 to n do if (a[i] mod 3=0) and (a[i] mod 5=0) then t:=t+a[i];

write('Tong cac phan tu la boi cua 3 va 5 la: ',t);

readln

end.

Câu 1: 

uses crt;

var a:array[1..100]of integer;

i,n,min:integer;

begin

clrscr;

write('Nhap n='); readln(n);

for i:=1 to n do 

  begin

write('A[',i,']='); readln(a[i]);

end;

min:=a[1];

for i:=1 to n do 

  if min>a[i] then min:=a[i];

writeln(min);

readln;

end.

Câu 2:

uses crt;

var st:string;

begin

clrscr;

write('Nhap xau:'); readln(st);

writeln('Xau ',st,' co ',length(st),' phan tu');

readln;

end.

uses crt;

const fi='bai1.inp';

var a,b:integer;

f:text;

begin

clrscr;

assign(f,fi); rewrite(f);

write('Nhap a='); readln(a);

write('Nhap b='); readln(b);

writeln(f,'a=',a);

writeln(f,'b=',b);

writeln(f,a,'+',b,'=',a+b);

close(f);

end.

const fi='ucln.inp';

fo='ucln.out';

var f1,f2:text;

a,b,i,ucln:integer;

begin

assign(f1,fi); reset(f1);

assign(f2,fo); rewrite(f2);

readln(f1,a,b);

if a<b then 

begin

ucln:=1;

for i:=1 to a do 

  if (a mod i=0) and (b mod i=0) then 

  begin

if ucln<i then ucln:=i;

end;

end

else begin

ucln:=1;

for i:=1 to b do 

  if (a mod i=0) and (b mod i=0) then 

begin

if ucln<i then ucln:=i;

end;

end;

writeln(f2,ucln);

close(f1);

close(f2);

end.

Program HOC24;

const fi='lop_11A5.txt';

var f: text;

begin

assign(f,fi);

rewrite(f);

write(f,'Toi yeu Viet Nam');

close(f);

end.