Buggy python submission (verdict: Runtime Error):
import heapq
import sys
sys.setrecursionlimit(1000000)
x, y, z, k = map(int, input().split())
A = list(map(int, input().split()))
B = list(map(int, input().split()))
C = list(map(int, input().split()))
A.sort(reverse=True)
B.sort(reverse=True)
C.sort(reverse=True)

q = []
ans = []
flag = []
first = [A[0] + B[0] + C[0], [0, 0, 0]]
heapq.heappush(q, first)
flag.append(first[1])
for h in range(k):
    max_ans = heapq.heappop(q)
    ans.append(abs(max_ans[0]))
    i, j, k = max_ans[1]
    if i == len(A)-1:
        i = i-1
    if j == len(B)-1:
        j = j-1
    if k == len(C)-1:
        k = k-1
    if i == len(A)-1 and j == len(B)-1 and k == len(C)-1:
      	print(ans[h])
      	exit()

    lst1 =  [-A[i+1]-B[j]-C[k], [i+1, j, k]]
    if lst1[1] not in flag:
        heapq.heappush(q, lst1)
        flag.append(lst1[1])

    lst2 = [-A[i]-B[j+1]-C[k], [i, j+1, k]]
    if lst2[1] not in flag: 
        heapq.heappush(q, lst2)
        flag.append(lst2[1])

    lst3 = [-A[i]-B[j]-C[k+1], [i, j, k+1]]
    if lst3[1] not in flag:
        heapq.heappush(q, lst3)
        flag.append(lst3[1])
    print(ans[h])

Fixed submission:
import heapq
x, y, z, w = map(int, input().split())
A = list(map(int, input().split()))
B = list(map(int, input().split()))
C = list(map(int, input().split()))
A.sort(reverse=True)
B.sort(reverse=True)
C.sort(reverse=True)

q = []
ans = []
flag = []
first = [A[0] + B[0] + C[0], [0, 0, 0]]
heapq.heappush(q, first)
flag.append(first[1])
for h in range(w):
    max_ans = heapq.heappop(q)
    ans.append(abs(max_ans[0]))
    i, j, k = max_ans[1]

    if i == x-1:
        lst1 =  [-A[i]-B[j]-C[k], [i, j, k]]
    else:
        lst1 =  [-A[i+1]-B[j]-C[k], [i+1, j, k]]
    if lst1[1] not in flag:
        heapq.heappush(q, lst1)
        flag.append(lst1[1])

    if j == y-1:
        lst2 = [-A[i]-B[j]-C[k], [i, j, k]]
    else:
        lst2 = [-A[i]-B[j+1]-C[k], [i, j+1, k]]
    if lst2[1] not in flag: 
        heapq.heappush(q, lst2)
        flag.append(lst2[1])

    if k == z-1:
        lst3 = [-A[i]-B[j]-C[k], [i, j, k]]
    else:
        lst3 = [-A[i]-B[j]-C[k+1], [i, j, k+1]]
    if lst3[1] not in flag:
        heapq.heappush(q, lst3)
        flag.append(lst3[1])
    
    print(ans[h])

Buggy python submission (verdict: Runtime Error):
import heapq
import sys
sys.setrecursionlimit(100000000)
x, y, z, k = map(int, input().split())
A = list(map(int, input().split()))
B = list(map(int, input().split()))
C = list(map(int, input().split()))
A.sort(reverse=True)
B.sort(reverse=True)
C.sort(reverse=True)

q = []
ans = []
flag = []
first = [A[0] + B[0] + C[0], [0, 0, 0]]
heapq.heappush(q, first)
flag.append(first[1])
for h in range(k):
    max_ans = heapq.heappop(q)
    ans.append(abs(max_ans[0]))
    i, j, k = max_ans[1]
    if i == len(A)-1:
        i = i-1
    if j == len(B)-1:
        j = j-1
    if k == len(C)-1:
        k = k-1

    lst1 =  [-A[i+1]-B[j]-C[k], [i+1, j, k]]
    if lst1[1] not in flag:
        heapq.heappush(q, lst1)
        flag.append(lst1[1])

    lst2 = [-A[i]-B[j+1]-C[k], [i, j+1, k]]
    if lst2[1] not in flag: 
        heapq.heappush(q, lst2)
        flag.append(lst2[1])

    lst3 = [-A[i]-B[j]-C[k+1], [i, j, k+1]]
    if lst3[1] not in flag:
        heapq.heappush(q, lst3)
        flag.append(lst3[1])
    print(ans[h])

Fixed submission:
import heapq
x, y, z, w = map(int, input().split())
A = list(map(int, input().split()))
B = list(map(int, input().split()))
C = list(map(int, input().split()))
A.sort(reverse=True)
B.sort(reverse=True)
C.sort(reverse=True)

q = []
ans = []
flag = []
first = [A[0] + B[0] + C[0], [0, 0, 0]]
heapq.heappush(q, first)
flag.append(first[1])
for h in range(w):
    max_ans = heapq.heappop(q)
    ans.append(abs(max_ans[0]))
    i, j, k = max_ans[1]

    if i == x-1:
        lst1 =  [-A[i]-B[j]-C[k], [i, j, k]]
    else:
        lst1 =  [-A[i+1]-B[j]-C[k], [i+1, j, k]]
    if lst1[1] not in flag:
        heapq.heappush(q, lst1)
        flag.append(lst1[1])

    if j == y-1:
        lst2 = [-A[i]-B[j]-C[k], [i, j, k]]
    else:
        lst2 = [-A[i]-B[j+1]-C[k], [i, j+1, k]]
    if lst2[1] not in flag: 
        heapq.heappush(q, lst2)
        flag.append(lst2[1])

    if k == z-1:
        lst3 = [-A[i]-B[j]-C[k], [i, j, k]]
    else:
        lst3 = [-A[i]-B[j]-C[k+1], [i, j, k+1]]
    if lst3[1] not in flag:
        heapq.heappush(q, lst3)
        flag.append(lst3[1])
    
    print(ans[h])

Buggy python submission (verdict: Runtime Error):
import heapq
import sys
sys.setrecursionlimit(1000000)
x, y, z, k = map(int, input().split())
A = list(map(int, input().split()))
B = list(map(int, input().split()))
C = list(map(int, input().split()))
A.sort(reverse=True)
B.sort(reverse=True)
C.sort(reverse=True)

q = []
ans = []
flag = []
first = [A[0] + B[0] + C[0], [0, 0, 0]]
heapq.heappush(q, first)
flag.append(first[1])
for h in range(k):
    max_ans = heapq.heappop(q)
    ans.append(abs(max_ans[0]))
    i, j, k = max_ans[1]
    if i == len(A)-1:
        i = i-1
    if j == len(B)-1:
        j = j-1
    if k == len(C)-1:
        k = k-1

    lst1 =  [-A[i+1]-B[j]-C[k], [i+1, j, k]]
    if lst1[1] not in flag:
        heapq.heappush(q, lst1)
        flag.append(lst1[1])

    lst2 = [-A[i]-B[j+1]-C[k], [i, j+1, k]]
    if lst2[1] not in flag: 
        heapq.heappush(q, lst2)
        flag.append(lst2[1])

    lst3 = [-A[i]-B[j]-C[k+1], [i, j, k+1]]
    if lst3[1] not in flag:
        heapq.heappush(q, lst3)
        flag.append(lst3[1])
    print(ans[h])

Fixed submission:
import heapq
x, y, z, w = map(int, input().split())
A = list(map(int, input().split()))
B = list(map(int, input().split()))
C = list(map(int, input().split()))
A.sort(reverse=True)
B.sort(reverse=True)
C.sort(reverse=True)

q = []
ans = []
flag = []
first = [A[0] + B[0] + C[0], [0, 0, 0]]
heapq.heappush(q, first)
flag.append(first[1])
for h in range(w):
    max_ans = heapq.heappop(q)
    ans.append(abs(max_ans[0]))
    i, j, k = max_ans[1]

    if i == x-1:
        lst1 =  [-A[i]-B[j]-C[k], [i, j, k]]
    else:
        lst1 =  [-A[i+1]-B[j]-C[k], [i+1, j, k]]
    if lst1[1] not in flag:
        heapq.heappush(q, lst1)
        flag.append(lst1[1])

    if j == y-1:
        lst2 = [-A[i]-B[j]-C[k], [i, j, k]]
    else:
        lst2 = [-A[i]-B[j+1]-C[k], [i, j+1, k]]
    if lst2[1] not in flag: 
        heapq.heappush(q, lst2)
        flag.append(lst2[1])

    if k == z-1:
        lst3 = [-A[i]-B[j]-C[k], [i, j, k]]
    else:
        lst3 = [-A[i]-B[j]-C[k+1], [i, j, k+1]]
    if lst3[1] not in flag:
        heapq.heappush(q, lst3)
        flag.append(lst3[1])
    
    print(ans[h])

Buggy python submission (verdict: Runtime Error):
import heapq
sys.setrecursionlimit(1000000)
x, y, z, k = map(int, input().split())
A = list(map(int, input().split()))
B = list(map(int, input().split()))
C = list(map(int, input().split()))
A.sort(reverse=True)
B.sort(reverse=True)
C.sort(reverse=True)

q = []
ans = []
flag = []
first = [A[0] + B[0] + C[0], [0, 0, 0]]
heapq.heappush(q, first)
flag.append(first[1])
for h in range(k):
    max_ans = heapq.heappop(q)
    ans.append(abs(max_ans[0]))
    i, j, k = max_ans[1]
    if i == len(A)-1:
        i = i-1
    if j == len(B)-1:
        j = j-1
    if k == len(C)-1:
        k = k-1

    lst1 =  [-A[i+1]-B[j]-C[k], [i+1, j, k]]
    if lst1[1] not in flag:
        heapq.heappush(q, lst1)
        flag.append(lst1[1])

    lst2 = [-A[i]-B[j+1]-C[k], [i, j+1, k]]
    if lst2[1] not in flag: 
        heapq.heappush(q, lst2)
        flag.append(lst2[1])

    lst3 = [-A[i]-B[j]-C[k+1], [i, j, k+1]]
    if lst3[1] not in flag:
        heapq.heappush(q, lst3)
        flag.append(lst3[1])
    print(ans[h])

Fixed submission:
import heapq
x, y, z, w = map(int, input().split())
A = list(map(int, input().split()))
B = list(map(int, input().split()))
C = list(map(int, input().split()))
A.sort(reverse=True)
B.sort(reverse=True)
C.sort(reverse=True)

q = []
ans = []
flag = []
first = [A[0] + B[0] + C[0], [0, 0, 0]]
heapq.heappush(q, first)
flag.append(first[1])
for h in range(w):
    max_ans = heapq.heappop(q)
    ans.append(abs(max_ans[0]))
    i, j, k = max_ans[1]

    if i == x-1:
        lst1 =  [-A[i]-B[j]-C[k], [i, j, k]]
    else:
        lst1 =  [-A[i+1]-B[j]-C[k], [i+1, j, k]]
    if lst1[1] not in flag:
        heapq.heappush(q, lst1)
        flag.append(lst1[1])

    if j == y-1:
        lst2 = [-A[i]-B[j]-C[k], [i, j, k]]
    else:
        lst2 = [-A[i]-B[j+1]-C[k], [i, j+1, k]]
    if lst2[1] not in flag: 
        heapq.heappush(q, lst2)
        flag.append(lst2[1])

    if k == z-1:
        lst3 = [-A[i]-B[j]-C[k], [i, j, k]]
    else:
        lst3 = [-A[i]-B[j]-C[k+1], [i, j, k+1]]
    if lst3[1] not in flag:
        heapq.heappush(q, lst3)
        flag.append(lst3[1])
    
    print(ans[h])

Buggy python submission (verdict: Runtime Error):
import heapq
x, y, z, k = map(int, input().split())
A = list(map(int, input().split()))
B = list(map(int, input().split()))
C = list(map(int, input().split()))
A.sort(reverse=True)
B.sort(reverse=True)
C.sort(reverse=True)

q = []
ans = []
flag = []
first = [A[0] + B[0] + C[0], [0, 0, 0]]
heapq.heappush(q, first)
flag.append(first[1])
for h in range(k):
    max_ans = heapq.heappop(q)
    ans.append(abs(max_ans[0]))
    i, j, k = max_ans[1]
    if i == len(A)-1:
        i = i-1
    if j == len(B)-1:
        j = j-1
    if k == len(C)-1:
        k = k-1

    lst1 =  [-A[i+1]-B[j]-C[k], [i+1, j, k]]
    if lst1[1] not in flag:
        heapq.heappush(q, lst1)
        flag.append(lst1[1])

    lst2 = [-A[i]-B[j+1]-C[k], [i, j+1, k]]
    if lst2[1] not in flag: 
        heapq.heappush(q, lst2)
        flag.append(lst2[1])

    lst3 = [-A[i]-B[j]-C[k+1], [i, j, k+1]]
    if lst3[1] not in flag:
        heapq.heappush(q, lst3)
        flag.append(lst3[1])
    print(ans[h])

Fixed submission:
import heapq
x, y, z, w = map(int, input().split())
A = list(map(int, input().split()))
B = list(map(int, input().split()))
C = list(map(int, input().split()))
A.sort(reverse=True)
B.sort(reverse=True)
C.sort(reverse=True)

q = []
ans = []
flag = []
first = [A[0] + B[0] + C[0], [0, 0, 0]]
heapq.heappush(q, first)
flag.append(first[1])
for h in range(w):
    max_ans = heapq.heappop(q)
    ans.append(abs(max_ans[0]))
    i, j, k = max_ans[1]

    if i == x-1:
        lst1 =  [-A[i]-B[j]-C[k], [i, j, k]]
    else:
        lst1 =  [-A[i+1]-B[j]-C[k], [i+1, j, k]]
    if lst1[1] not in flag:
        heapq.heappush(q, lst1)
        flag.append(lst1[1])

    if j == y-1:
        lst2 = [-A[i]-B[j]-C[k], [i, j, k]]
    else:
        lst2 = [-A[i]-B[j+1]-C[k], [i, j+1, k]]
    if lst2[1] not in flag: 
        heapq.heappush(q, lst2)
        flag.append(lst2[1])

    if k == z-1:
        lst3 = [-A[i]-B[j]-C[k], [i, j, k]]
    else:
        lst3 = [-A[i]-B[j]-C[k+1], [i, j, k+1]]
    if lst3[1] not in flag:
        heapq.heappush(q, lst3)
        flag.append(lst3[1])
    
    print(ans[h])