def main():
	a,b,c=map(int,input().split())
	ans = []
	for n in range(1,(c+b)//a+1):
		an = a*n
		anb = an-b
		c0 = anb if anb > 0 else an
		if c0 == c:
			ans.append(n)
	if len(ans) > 0:
		for n in ans:
			print(n)
	else:
		print(-1)

if __name__ == "__main__":
	main()