#include <stdio.h>

#define MAX	50
#define LESS	-1
#define EQUAL	 0
#define GREATER	+1

int main() {
	int m5 = 5, m7 = 7, comp;

	while (m5 <= MAX || m7 <= MAX) {
		if (m5 == m7) {
			comp = EQUAL;
		} else if (m5 < m7) {
			comp = LESS;
		} else {
			comp = GREATER;
		}
		switch (comp) {
			case EQUAL:
				m7 += 7;
			case LESS:
				printf("%d\n", m5);
				m5 += 5;
				break;
			case GREATER:
				printf("%d\n", m7);
				m7 += 7;
				break;
		}
	}
}