program Sashko;

{$APPTYPE CONSOLE}

uses
  SysUtils;

var a,x,y,z,b,c:real;

begin
  { TODO -oUser -cConsole Main : Insert code here }
  readln(x,y,z);
  a:=120;
  b:=5;
  c:=(a-(x+y+z))b;
  write(c:0:0);
  readln;

end.