enum L{L;System z;{try{int i=1,b;for(;i>(b=0);){for(;(i=z.in.read())>14;)b=(b*10)+i-48;if(i>0)z.out.print(b+" is "+(b%(b%50>0?4:16)>0?"not ":"")+"a leap year.\n");}}catch(Exception e){}}}
Note that non-ascii characters in the above source code will be escaped (such as \x9f).