N,M,K = map(int,input().split())
A = [list(map(int,input().split())) for _ in range(N)]
dp = [[False for _ in range(K+1)] for _ in range(N)]
for j in A[0]:
    if j<=K:
        dp[0][j] = True
for i in range(1,N):
    for j in range(1,K+1):
        for k in A[i]:
            if j-k>0:
                dp[i][j] = dp[i][j]|dp[i-1][j-k]
ans = -1
for j in range(K,0,-1):
    if dp[N-1][j]:
        ans = K-j
        break
print(ans)