program Project2;
var x:real;
begin
Write('vvedi x=');
ReadLn(m);
if x<0 then WriteLn('f(x)=',0);
if (x>0) and(x<=1) then WriteLn('f(x)=',x);
if x>1 then WriteLn('f(x)=',x*x*x*x);
ReadLn;
end.
program Project2;
var x:real;
begin
Write('vvedi x=');
ReadLn(m);
if x<0 then WriteLn('f(x)=',0);
if (x>0) and(x<=1) then WriteLn('f(x)=',x);
if x>1 then WriteLn('f(x)=',x*x*x*x);
ReadLn;
end.