VAR
 n:Real;
BEGIN
 Write('Enter n (minutes) ');
 Readln(n);
 WriteLn(ROUND(Exp(n*Ln(2))));
 ReadLn;
END.

CONST
 N=10;
VAR
 A:ARRAY[1..N] of INTEGER;
 SUM:LongInt;
 i:INTEGER;
BEGIN
 RANDOMIZE;
 SUM:=0;
 For i:=1 to N do
  begin
   A[i]:=RANDOM(1000)-500;
   SUM:=SUM+A[i];
   Write(A[i]:6);
  end;
 WriteLn;
 WriteLn('SUM= ',SUM);
 For i:=1 to N do
  begin
   A[i]:=-A[i];
   Write(A[i]:6);
  end;
 WriteLn;
 ReadLn;
END.

VAR
 x:REAL;
BEGIN
 Write('x= ');
 ReadLn(x);
 Write('y= ');
 If x>0 then WriteLn(SQR(Sin(x))) else WriteLn(Sin(SQR(x)));
 ReadLn;
END.

VAR
 i:INTEGER;
 n,a:WORD;
 SUM:LongInt;
BEGIN
 Write('n= ');
 ReadLn(n);
 SUM:=1;
 a:=1;
 For i:=1 to n do
  begin
   a:=a*2;
   SUM:=SUM+a;
  end;
 WriteLn('SUM= ',SUM);
 ReadLn;
END.

VAR
 S0,Sx,T0,Tx,V1,V2:REAL;
BEGIN
 Write('Distance between A and B (km) = ');
 ReadLn(S0);
 Write('The car velocity (km/h) = ');
 ReadLn(V1);
 Write('The lorry velocity (km/h) = ');
 ReadLn(V2);
 Write('The delay time of lorry start (hours) = ');
 ReadLn(T0);
 WriteLn;
 If Round(V1*10000)>=Round(V2*10000) then
  begin
   WriteLn('The automobiles will never meet, because the lorry');
   WriteLn('is slower then the car or has the same velocity');
  end else
  begin
   Tx:=V1*T0/(V2-V1);
   Sx:=Tx*V2;
   If Sx>S0 then
    begin
     WriteLn('The automobiles will not meet, because the car will reach');
     WriteLn('the B point before the lorry would catch it');
    end else
    begin
     WriteLn('The automobiles will meet in ',Tx:5:3,' hours');
     WriteLn('at a distanse of ',Sx:6:2,' kilometers from A point');
    end;
  end;
 ReadLn;
END.