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

dp = [[False]*(K+1) for _ in range(2)]
dp[0][0] = True
num = 0
ans = 0
for i in range(N):
    num = (num+1)%2
    dp[num] = [False]*(K+1)
    cnt = 0
    for j in range(M):
        for k in range(K+1):
            if k+A[i][j] > K:
                continue
            if dp[(num+1)%2][k]:
                dp[num][k+A[i][j]] = True
                cnt += 1
    if cnt == 0:
        ans = -1

if ans == 0:
    for k in range(K, -1, -1):
        if dp[num][k]:
            ans = K-k
            break
print(ans)