import sys

sys.setrecursionlimit(10**7)
def I(): return int(sys.stdin.readline().rstrip())
def MI(): return map(int,sys.stdin.readline().rstrip().split())
def LI(): return list(map(int,sys.stdin.readline().rstrip().split()))
def LI2(): return list(map(int,sys.stdin.readline().rstrip()))
def S(): return sys.stdin.readline().rstrip()
def LS(): return list(sys.stdin.readline().rstrip().split())
def LS2(): return list(sys.stdin.readline().rstrip())


N,M,K = MI()
A = [None]+[LI() for _ in range(N)]

flag = [[0]*(K+1) for _ in range(N+1)]
flag[0][0] = 1
for i in range(1,N+1):
    for j in range(K+1):
        if flag[i-1][j]:
            for a in A[i]:
                if j+a <= K:
                    flag[i][j+a] = 1

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