#include <stdio.h>

int
main()
{
	int c, p;
	while ((c = getchar()) != EOF) {
		if (c == '-') {
			c = getchar();
			for (++p; p < c + 1; ++p) {
				putchar(p);
			}
		} else {
			putchar(c);
		}
		p = c;
	}
	return 0;
}