A,B,C=map(int,input().split())
ans=[]
if C%A==0 and C<=B and C//A>0:
        ans.append(C//A)
C+=B
if C%A==0 and C//A>0:
    ans.append(C//A)
if len(ans)==0:
    print(-1)
else:
    ans = list(set(ans))
    ans.sort()
    print(*ans,sep="\n")