n,k=list(map(int,input().split()))
now=k
a=sorted([int(input()) for i in range(n)],reverse=True)
index=0
min_value=min(a)
while True:
    if min_value>now:
        break
    elif now-a[index]>=0:
        now-=a[index]
        a.pop(index)
    else:
        index+=1
print(k-now)