INF = 1 << 60

n, m, k = map(int, input().split())
a = [list(map(int, input().split())) for _ in range(n)]

dp = [False for _ in range(k + 1)]
dp[0] = True
for i in range(n):
  ndp = [False for _ in range(k + 1)]
  for j in range(k):
    if not dp[j]:
      continue
    for diff in a[i]:
      if j + diff <= k:
        ndp[j + diff] = True
  dp = ndp

for j in range(k, -1, -1):
  if dp[j]:
    print(k - j)
    exit()

print("-1")