import bisect
N,M,K = map(int,input().split())
A = list(map(int,input().split()))
A.append(0)
x = K//2
y = K-x
old = A[:]
for i in range(x-1):
    new = set()
    for i in range(len(old)):
        for j in range(len(old)):
            new.add(old[i]+old[j])
    old = list(new)
one = old
old = A[:]
for i in range(y-1):
    new = set()
    for i in range(len(old)):
        for j in range(len(old)):
            new.add(old[i]+old[j])
    old = list(new)
two = old
one.sort()
two.sort()
ans = 0
for i in one:
    if M-i >= 0:
        index = bisect.bisect_right(two,M-i)-1
        if index != len(two):
            if two[index] + i <= M:
                ans = max(ans,two[index] + i)
print(ans)