var k, s: integer;begin s:=2; k:=2; while s < 50 do begin s:=s+k; k:=k+2; end; write(k);end.
var k, s: integer;begin s:=0; k:=1; while s < 66 do begin k:=k+3; s:=s+k; end; write(k);end.
var k, s: integer;begin s:=0; k:=0; while k < 12 do begin s:=s+2*k; k:=k+3; end; write(s);end.
begin s:=1; k:=0; while k < 13 do begin s:=s+2*k; k:=k+4; end; write(s+k);end.
var n, s: integer;begin n := 4; s := 0; while n <= 8 do begin s := s + n; n := n + 1 end; write(s)end.
var n, s: integer;beginn := 4;s := 0;while n <= 13 do begin s := s + 15; n := n + 1end;write(s)end.
var n, s: integer;begin n := 1; s := 0; while n <= 101 do begin s := s + 7; n := n + 1 end; write(s)end.
var n, s: integer;begin n := 0; s := 512; while s >= 0 do begin s := s - 20; n := n + 1 end; write(n)end.
var n, s: integer;beginn := 0;s := 0;while s <= 256 do begin s := s + 25; n := n + 1end;write(n)end.
var n, s: integer;beginn:= 0;s:= 0;while s <= 365 do begin s:= s + 33; n:= n + 5end;write(n)end.