Program z16_79;
uses crt;
const n=10;
var a,b:array[1..n] of integer;
i:byte; c:integer;
BEGIN
clrscr;
randomize;
for i:=1 to n do begin
a[i]:=-50+random(101);
c:=2*a[i];
if (i>1) and (b[i-1]>c)
then b[i]:=b[i-1] else b[i]:=c;
writeln(a[i]:5, b[i]:5);
end;
readln;
END.