for(a=[],r=readline(h=i=0);r[i];f=function(x)(x=x.toString(16))&&x<2?'0'+x:x)h^=a[i]=r.charCodeAt(i++) for(i=0,o=new Date&1?1:f(h>>4);a[i];)o+=f(a[i++]^h) print(unescape((o+f(h&15)+(o.length&1?'':0)).replace(/../g,'%$&')))