const nx=20;

var r:array[1..nx] of integer;

var j:real; n,i,sum,k:integer;

begin

randomize;

write('Введите n');

readln(n);

for i:= 1 to n do begin

r[i]:= random(15);

if ((i mod 4 = 0) and (r[i] < 5 )) then begin

sum:= r[i]+sum;

k:=k+1;

end;

write(r[i]:4);

end;

writeln;

writeln('sum =',sum:3,'  k =',k);

end.