A, B, C = list(map(int, input().split()))
count = []
for N in range(B + C):
	if (B+C) / A == N:
		count.append(N)
	elif C / A == N:
		conut.append(N)
	else:
		continue
count = count.sort
if count != len(count) == 0:
	print(count)
else:
	print(-1)