#include <stdio.h>
#include <stdlib.h>
#define COLIM 16

int main(int argc, char *argv[]) {
	char c;
	int count=0;
	if (argc<1) {
		fprintf(stderr, "No format provided!\n");
		return 1;
	}
	while ((c=getchar())!=EOF) {
		printf(argv[1], c);
		if (count++==COLIM) {
			printf("\n");
			count=0;
		}
	}
	printf("\n");
	return 0;
}