2798

n,m = map(int,input().split())

item = input().split()
result = []
for i in range(0,n-2):
for j in range(i+1,n-1):
for k in range(j+1,n):
temp = int(item[i])+int(item[j])+int(item[k])
if temp <= m:
result.append(temp)

print(max(result))