N, M, K = map(int, input().split())
A = [list(map(int, input().split())) for _ in range(N)]
dp = [[False] * (K+1) for _ in range(N+1)]
dp[0][0] = True

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

for i in range(K, -1, -1):
    if dp[N][i]:
        print(K-i)
        break
else:
    print(-1)