/* Format input into N-character lines. */

#include <string.h>
#include <stdio.h>

int main(int argc, char *argv[]) {
	char word[100];
	int len = 0, width = 72;

	if (argc > 1)
		sscanf(argv[1], "%d", &width);
	while (scanf("%s", word) != EOF) {
		int n = strlen(word);
		if (len > 0)
			n++;
		if (len + n > width) {
			if (len > 0)
				printf("\n");
			len = 0;
		}
		if (len > 0)
			printf(" ");
		printf("%s", word);
		len += n;
	}
	if (len > 0)
		printf("\n");
	return 0;
}