n,m,k = map(int,input().split())
A = [list(map(int,input().split())) for i in range(n)]
dp = [0]*(k+1)
dp[k] = 1
for a in A:
    ndp = [0]*(k+1)
    for i in range(k+1):
        if dp[i] == 0:
            continue
        for j in a:
            if i-j >= 0:
                ndp[i-j] = 1
    dp = ndp

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