Buggy python submission (verdict: Time Limit Exceeded):
n,k=map(int,input().split())
*a,=map(int,input().split())
l=[]
for i in range(n):
    t=0
    for j in range(i,n):
        t+=a[j]
        l.append(t)
list=[[]for _ in range(50)]
for t in l:
    u=bin(t)[2:][::-1]
    for i,v in zip(range(50),u):
        if int(v):list[i].append(t)
for t in list[::-1]:
    if len(t)>=k:
        import itertools
        m=0
        for v in itertools.combinations(t,k):
            u=v[0]
            for i in v[1:]:
                u&=i
            m=max(m,u)
        print(m)
        exit()

Fixed submission:
n,k,*a=map(int,open(0).read().split())
l=[]
for i in range(n):
    t=0
    for j in range(i,n):
        t+=a[j]
        l.append(t)
for i in range(40,-1,-1):
    j=2**i
    t=[]
    for x in l:
        if x&j:
            t.append(x)
    if len(t)>=k:
        l=t
a,*b=l
for t in b:
    a&=t
print(a)

Buggy python submission (verdict: Time Limit Exceeded):
n,k=map(int,input().split())
*a,=map(int,input().split())
l=[]
for i in range(n):
    t=0
    for j in range(i,n):
        t+=a[j]
        l.append(t)
list=[[]for _ in range(50)]
for t in l:
    u=bin(t)[2:][::-1]
    for i,v in zip(range(50),u):
        if int(v):list[i].append(t)
for t in list[::-1]:
    if len(t)>=k:
        import itertools
        m=0
        for v in itertools.combinations(t,k):
            u=v[0]
            for i in v[1:]:
                u&=i
            m=max(m,u)
        print(m)
        exit()

Fixed submission:
n,k,*a=map(int,open(0).read().split())
l=[]
for i in range(n):
    t=0
    for j in range(i,n):
        t+=a[j]
        l.append(t)
for i in range(40,-1,-1):
    j=2**i
    t=[]
    for x in l:
        if x&j:
            t.append(x)
    if len(t)>=k:
        l=t
a,*b=l
for t in b:
    a&=t
print(a)

Buggy python submission (verdict: Time Limit Exceeded):
n,k=map(int,input().split())
*a,=map(int,input().split())
l=[]
for i in range(n):
    t=0
    for j in range(i,n):
        t+=a[j]
        l.append(t)
l=sorted(l)[::-1]
m=0
import itertools
for t in itertools.combinations(l,k):
    c=t[0]
    for u in t[1:]:
        c&=u
    m=max(m,c)
print(m)

Fixed submission:
n,k,*a=map(int,open(0).read().split())
l=[]
for i in range(n):
    t=0
    for j in range(i,n):
        t+=a[j]
        l.append(t)
for i in range(40,-1,-1):
    j=2**i
    t=[]
    for x in l:
        if x&j:
            t.append(x)
    if len(t)>=k:
        l=t
a,*b=l
for t in b:
    a&=t
print(a)

Buggy python submission (verdict: Time Limit Exceeded):
n,k=map(int,input().split())
*a,=map(int,input().split())
l=[]
for i in range(n):
    for j in range(i+1,n+1):
        l.append(sum(a[i:j]))
l=sorted(l)[::-1]
m=0
import itertools
for t in itertools.combinations(l,k):
    c=t[0]
    for u in t[1:]:
        c&=u
    m=max(m,c)
print(m)

Fixed submission:
n,k,*a=map(int,open(0).read().split())
l=[]
for i in range(n):
    t=0
    for j in range(i,n):
        t+=a[j]
        l.append(t)
for i in range(40,-1,-1):
    j=2**i
    t=[]
    for x in l:
        if x&j:
            t.append(x)
    if len(t)>=k:
        l=t
a,*b=l
for t in b:
    a&=t
print(a)

Buggy python submission (verdict: Runtime Error):
n,k=map(int,input().split())
*a,=map(int,input().split())
l=[]
for i in range(n):
    for j in range(i+1,n+1):
        l.append(sum(a[i:j]))
l=sorted(l)[-k:][::-1]
c=l[0]
for t in l[1:]:
    c&=t
print(t)

Fixed submission:
n,k,*a=map(int,open(0).read().split())
l=[]
for i in range(n):
    t=0
    for j in range(i,n):
        t+=a[j]
        l.append(t)
for i in range(40,-1,-1):
    j=2**i
    t=[]
    for x in l:
        if x&j:
            t.append(x)
    if len(t)>=k:
        l=t
a,*b=l
for t in b:
    a&=t
print(a)