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.
