#39212: python max()抓出最大值
mu0975353917@gmail.com
(Moon Chan)
a, b = map(int, input().split())
s = []
sum = 0
for i in range(a):
f = list(map(int, input().split()))
sum += max(f)
s.append(max(f))
print(sum)
temp = 1
for i in range(len(s)):
if (sum % s[i]) == 0:
if temp == 0:
print("", s[i], end="")
else:
print(s[i], end="")
temp = 0
if temp:
print(-1)
else:
print()