Что делает данная программа? program n_1;
var
a: integer;
z: array [1..50] of integer;
begin
for a := 1 to 50 do
begin
z[a] := random(201) - 100;
if z[a] > 0 then
write(z[a],' ');
end;
end

хотелось бы напомнить, что с=12, f=15, а=10.

имеем:

20с7f_16 = 2·16⁴ + 0·16³ + 12·16² + 7·16¹ + 15·16⁰ = 2·65536 + 12·256 + 7·16 + 15 = 131072 + 3072 + 112 + 15 = 134271_10(f3ao6/4)_16 = (15·16⁴ + 3·16³ + 10·16² + 0·16¹ + 6·16⁰)/4 = (15·65536 + 3·4096 + 10·256 + 6)/4 = (983040 + 12288 + 2560 + 6)/4 = 997894/4 = 249473,5 _10

3^i = 18

i = 3

ответ. 3 лампочки.

1)

var

a,b: array [1..100] of integer;

i,j,k,a,b,f: integer;

begin

randomize;

readln(a);

readln(b);

k: =0;

for i: =1 to 20 do

begin

a[i]: =random(135)-45;

f: =0;

for j: =a to b do

if (a[i]=j) and (a[i] mod 7 =0) then f: =1;

if f=0 then

begin

k: =k+1;

b[k]: =a[i];

end;

end;

for i: =1 to k do

writeln(b[i]);

end.

2)

var

a,b: array [1..100] of integer;

i,j,k: integer;

begin

randomize;

readln(k);

j: =0;

for i: =1 to 20 do

begin

a[i]: =random(135)-45;

writeln(a[i]);

for i: =1 to 19 do

begin

if a[i]*a[i+1]> 0 then

begin

j: =j+1;

b[j]: =a[i];

j: =j+1;

b[j]: =k;

end

else

begin

j: =j+1;

b[j]: =a[i];

end;

end;

j: =j+1;

b[j]: =a[20];

for i: =1 to j do

writeln(b[j]);

3)

var

a,b: array [1..20] of integer;

i,j,k1,k2: integer;

begin

randomize;

readln(k1);

readln(k2);

if k1< k2 then

begin

for i: =1 to 20 do

begin

a[i]: =random(135)-45;

writeln(a[i]);

end;

for i: =1 to k1-1 do

b[i]: =a[i];

for i: =k2+1 to 20 do

b[i]: =a[i];

j: =k2;

for i: =k1 to k2 do

begin

b[j]: =a[i];

j: =j-1;

end;

for i: =1 to 20 do

writeln(b[i]);

end;

end.

необходимо (но не достаточно).