var ss,tt:string; j:integer; begin ss:= 'student'; tt:=''; j:=6; repeat tt:=char(byte(ss[j])+1)+tt; dec(j); until ss[j]>'t'; write(tt); readln; end.
var sum,j: integer; begin sum:=0; j:=3; repeat inc(j); if (j>2) and (j<7) then continue; inc(sum,j); if j>6 then break; until j<=2; write(sum); readln; end.
var sum,rr:real; begin rr:=1; sum:=0; repeat sum:=sum+rr; rr:=rr/2; until rr < 0.124; write(sum:0:3); readln; end.
var sum:integer; bb:byte; begin bb:=12; sum:=0; repeat inc(sum,bb+2); bb:=bb*2; until bb>90; write(sum); readln; end.
var bb:integer; sum:real; begin bb:= 8; sum:=0; repeat repeat sum:=sum+bb; bb:= bb * 2; until bb > 40; until bb < 70; write(sum:0:0); readln; end.