a, b ,c = map(int, input().split())
ans = []
n = 1
while True:
    m = n * a
    k = m - b

    if k > c:
        break
    else:
        if k <= 0:
            if m == c:
                ans.append(n)
        else:
            if k == c:
                ans.append(n)
    n += 1

if len(ans) == 0:
    print(-1)
else:
    print(*ans, sep='\n')