A,B,C = map(int,input().split())

res = []
k = (B+A-1)//A
for n in range(k,pow(10,5)+1):
    if n*A-B > 0 and C == n*A-B: res.append(n)
    if n*A-B <= 0 and C == n*A: res.append(n)
res.sort()
if not res:
    print(-1)
else:
    for r in res:
        print(r)