a, b, c = map(int, input().split())
ans = []
if c % a == 0:
    n = c // a
    if n * a <= b:
        ans.append(n)
if (c + b) % a == 0:
    m = (c + b) // a
    if m * a > b:
        ans.append(m)

ans.sort()
if not ans:
    print(-1)
else:
    for e in ans:
        print(e)