#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#define M(P,F,J)in\
t main(){unsigned \
a=0,i,j,t[64];F(sr\
and(time(0));~a>>8\
;a>>8?0:P(a)){F(i=\
j=0;a=getchar(),~i\
>>6&&(a>>7==1||(a|\
32)-97<26);)t[i++]\
=a;F(i--;i+1;j=i?r\
and()%i+1:0)P(J),J\
=t[i--];}return 0;}
M(putchar,for,t[j])