N, M, K = map(int, input().split())

A = [list(map(int, input().split())) for _ in range(N)]

dp = [False] * (K + 1)
dp[0] = True

for i in range(N):
    nx = [False] * (K + 1)
    for j in range(M):
        for k in range(K + 1):
            if k - A[i][j] >= 0:
                nx[k] |= dp[k - A[i][j]]
    dp = nx

for i in range(K + 1)[::-1]:
    if dp[i]:
        print(K - i)
        exit()

print(-1)