program trung_binh;
uses crt;
var A:array[1..1000] of integer;
n,i,t:integer;
begin
clrscr;
write('Nhap N: '); readln(n);
t:=0;
for i:=1 to n do
begin
write('Nhap so thu ',i,': '); readln(A[i]);
t:=t+A[i];
end;
write('Trung binh cua N so nguyen la: ',t/n:0:3);
readln;
end.