uses math;
var s,v,t,r:extended;
begin
assign(input,'input.dat');
reset(input);
assign(output,'output.ans');
rewrite(output);
readln(s,v,t);
r:=s*power(1.0+v/100.0,t);
r:=(round(r*100)/100.0);
writeln(r:2:2);
close(input);
close(output);
end.