N,M,K = map(int, input().split())
dp = [[False]*(K+1) for i in range(N+1)] 
dp[0][0] = True
cnt = 0
for i in range(N):
    As = list(map(int, input().split()))
    cnt += min(As)
    for j in range(K):
        if dp[i][j]:
            for a in As:
                if a + j > K: continue
                dp[i+1][a+j] = dp[i][j]
                flg = False
    # print(dp[i+1])
if cnt > K:
    print(-1)
    exit()
ans = 0
for i in range(K,-1,-1):
    if dp[N][i]: 
        ans = i
        break

print(K-ans)