/* USAGE. (ksh88)

	readchar() { char=$(readchar && echo eof) && char=${char%eof}; }
	while readchar; printf %s "$char"; done

*/

#include<stdio.h>
int c;
int main() {
setbuf(stdin,0);
if((c=getchar())==EOF) return 1;
else putchar(c); return 0;
}