Buggy python submission (verdict: Runtime Error):
if __name__ == "__main__":
  l = [0,2,5,5,4,5,6,3,7,6]
  n,m = list(map(int,input().split()))
  a = list(map(int,input().split()))
  res = ''
  INF = 10**4
  
  dp = [[0,0] for i in range(n+1)]
  for i in range(n):
    for j in range(m):
      if dp[i][1] + l[a[j]] != i + l[a[j]] or i + l[a[j]] > n:
        pass
      else:
        dp[i + l[a[j]]][0] = max(dp[i][0] + 1, dp[i + l[a[j]]][0])
        dp[i + l[a[j]]][1] = dp[i][1] + l[a[j]]
  for i in range(1,n): 
    if dp[i][0] == 0:
      dp[i][0] = -INF
    else:
      pass
  
  a.sort(reverse = True)
  i = n
  while i > 0:
    for j in range(m):
      if dp[i - l[a[j]]][0] + 1 == dp[i][0]:
        res += str(a[j])
        i -= l[a[j]]
        break
      else:
        pass
  print(res)


Fixed submission:
if __name__ == "__main__":
  l = [0,2,5,5,4,5,6,3,7,6]
  n,m = list(map(int,input().split()))
  a = list(map(int,input().split()))
  res = ''
  INF = 10**4
  
  dp = [[0,0] for i in range(n+1)]
  for i in range(n):
    for j in range(m):
      if dp[i][1] + l[a[j]] != i + l[a[j]] or i + l[a[j]] > n:
        pass
      else:
        dp[i + l[a[j]]][0] = max(dp[i][0] + 1, dp[i + l[a[j]]][0])
        dp[i + l[a[j]]][1] = dp[i][1] + l[a[j]]
  for i in range(1,n): dp[i][0] = -INF if dp[i][0] == 0 else dp[i][0]
  
  a.sort(reverse = True)
  i = n
  while i > 0:
    for j in range(m):
      if i >= l[a[j]] and dp[i - l[a[j]]][0] + 1 == dp[i][0]:
        res += str(a[j])
        i -= l[a[j]]
        break
      else:
        pass
  print(res)

Buggy python submission (verdict: Runtime Error):
if __name__ == "__main__":
  l = [0,2,5,5,4,5,6,3,7,6]
  n,m = list(map(int,input().split()))
  a = list(map(int,input().split()))
  res = ''
  INF = 10**4
  
  dp = [[0,0] for i in range(n+1)]
  for i in range(n):
    for j in range(m):
      if dp[i][1] + l[a[j]] != i + l[a[j]] or i + l[a[j]] > n:
        pass
      else:
        dp[i + l[a[j]]][0] = max(dp[i][0] + 1, dp[i + l[a[j]]][0])
        dp[i + l[a[j]]][1] = dp[i][1] + l[a[j]]
  for i in range(1,n): dp[i][0] = -INF if dp[i][0] == 0 else dp[i][0]
  
  a.sort(reverse = True)
  i = n
  for k in range(dp[n][0], 0, -1):
    for j in range(m):
      if dp[i - l[a[j]]][0] + 1 == dp[i][0]:
        res += str(a[j])
        i -= l[a[j]]
        break
      else:
        pass
  print(res)



Fixed submission:
if __name__ == "__main__":
  l = [0,2,5,5,4,5,6,3,7,6]
  n,m = list(map(int,input().split()))
  a = list(map(int,input().split()))
  res = ''
  INF = 10**4
  
  dp = [[0,0] for i in range(n+1)]
  for i in range(n):
    for j in range(m):
      if dp[i][1] + l[a[j]] != i + l[a[j]] or i + l[a[j]] > n:
        pass
      else:
        dp[i + l[a[j]]][0] = max(dp[i][0] + 1, dp[i + l[a[j]]][0])
        dp[i + l[a[j]]][1] = dp[i][1] + l[a[j]]
  for i in range(1,n): dp[i][0] = -INF if dp[i][0] == 0 else dp[i][0]
  
  a.sort(reverse = True)
  i = n
  while i > 0:
    for j in range(m):
      if i >= l[a[j]] and dp[i - l[a[j]]][0] + 1 == dp[i][0]:
        res += str(a[j])
        i -= l[a[j]]
        break
      else:
        pass
  print(res)

Buggy python submission (verdict: Time Limit Exceeded):
l = [0,2,5,5,4,5,6,3,7,6]
n,m = list(map(int,input().split()))
a = list(map(int,input().split()))
dp = [['',0] for i in range(n+1)]
for i in range(n):
  for j in range(m):
    if dp[i][1] + l[a[j]] != i + l[a[j]] or i + l[a[j]] > n:
      pass
    elif len(dp[i][0]) + 1 > len(dp[i + l[a[j]]][0]):
      dp[i + l[a[j]]][0] = str(a[j]) + dp[i][0]
      dp[i + l[a[j]]][1] = dp[i][1] + l[a[j]]
    elif len(dp[i][0]) + 1 == len(dp[i + l[a[j]]][0]):
      if int(str(a[j]) + dp[i][0]) > int(dp[i + l[a[j]]][0]):
        dp[i + l[a[j]]][0] = str(a[j]) + dp[i][0]
        dp[i + l[a[j]]][1] = dp[i][1] + l[a[j]]
      else:
        pass
    else:
      pass
print(dp[n][0])

Fixed submission:
if __name__ == "__main__":
  l = [0,2,5,5,4,5,6,3,7,6]
  n,m = list(map(int,input().split()))
  a = list(map(int,input().split()))
  res = ''
  INF = 10**4
  
  dp = [[0,0] for i in range(n+1)]
  for i in range(n):
    for j in range(m):
      if dp[i][1] + l[a[j]] != i + l[a[j]] or i + l[a[j]] > n:
        pass
      else:
        dp[i + l[a[j]]][0] = max(dp[i][0] + 1, dp[i + l[a[j]]][0])
        dp[i + l[a[j]]][1] = dp[i][1] + l[a[j]]
  for i in range(1,n): dp[i][0] = -INF if dp[i][0] == 0 else dp[i][0]
  
  a.sort(reverse = True)
  i = n
  while i > 0:
    for j in range(m):
      if i >= l[a[j]] and dp[i - l[a[j]]][0] + 1 == dp[i][0]:
        res += str(a[j])
        i -= l[a[j]]
        break
      else:
        pass
  print(res)

Buggy python submission (verdict: Time Limit Exceeded):
import math

if __name__ == "__main__":
    l = [0,2,5,5,4,5,6,3,7,6]
    n,m = list(map(int,input().split()))
    a = list(map(int,input().split()))
    dp = [[0,0,0] for i in range(n+1)]
    for i in range(n):
        for j in range(m):
            if dp[i][2] + l[a[j]] != i + l[a[j]] or i + l[a[j]] > n:
                pass
            elif dp[i][0] + a[j]*pow(10, dp[i][1]) >= dp[i + l[a[j]]][0]:
                dp[i + l[a[j]]][0] = dp[i][0] + a[j]*pow(10, dp[i][1])
                dp[i + l[a[j]]][1] = dp[i][1] + 1
                dp[i + l[a[j]]][2] = dp[i][2] + l[a[j]]
            else:
                pass
    print(dp[n][0])

Fixed submission:
if __name__ == "__main__":
  l = [0,2,5,5,4,5,6,3,7,6]
  n,m = list(map(int,input().split()))
  a = list(map(int,input().split()))
  res = ''
  INF = 10**4
  
  dp = [[0,0] for i in range(n+1)]
  for i in range(n):
    for j in range(m):
      if dp[i][1] + l[a[j]] != i + l[a[j]] or i + l[a[j]] > n:
        pass
      else:
        dp[i + l[a[j]]][0] = max(dp[i][0] + 1, dp[i + l[a[j]]][0])
        dp[i + l[a[j]]][1] = dp[i][1] + l[a[j]]
  for i in range(1,n): dp[i][0] = -INF if dp[i][0] == 0 else dp[i][0]
  
  a.sort(reverse = True)
  i = n
  while i > 0:
    for j in range(m):
      if i >= l[a[j]] and dp[i - l[a[j]]][0] + 1 == dp[i][0]:
        res += str(a[j])
        i -= l[a[j]]
        break
      else:
        pass
  print(res)

Buggy python submission (verdict: Time Limit Exceeded):
if __name__ == "__main__":

	l = [0,2,5,5,4,5,6,3,7,6]
	n,m = list(map(int,input().split()))
	a = list(map(int,input().split()))
	dp = [[0,0,0] for i in range(n+1)]
	for i in range(n):
		for j in range(m):
			if dp[i][2] + l[a[j]] != i + l[a[j]] or i + l[a[j]] > n:
				pass
			elif dp[i][0] + a[j]*(10**dp[i][1]) >= dp[i + l[a[j]]][0]:
				dp[i + l[a[j]]][0] = dp[i][0] + a[j]*(10**dp[i][1])
				dp[i + l[a[j]]][1] = dp[i][1] + 1
				dp[i + l[a[j]]][2] = dp[i][2] + l[a[j]]
			else:
				pass
	print(dp[n][0])

Fixed submission:
if __name__ == "__main__":
  l = [0,2,5,5,4,5,6,3,7,6]
  n,m = list(map(int,input().split()))
  a = list(map(int,input().split()))
  res = ''
  INF = 10**4
  
  dp = [[0,0] for i in range(n+1)]
  for i in range(n):
    for j in range(m):
      if dp[i][1] + l[a[j]] != i + l[a[j]] or i + l[a[j]] > n:
        pass
      else:
        dp[i + l[a[j]]][0] = max(dp[i][0] + 1, dp[i + l[a[j]]][0])
        dp[i + l[a[j]]][1] = dp[i][1] + l[a[j]]
  for i in range(1,n): dp[i][0] = -INF if dp[i][0] == 0 else dp[i][0]
  
  a.sort(reverse = True)
  i = n
  while i > 0:
    for j in range(m):
      if i >= l[a[j]] and dp[i - l[a[j]]][0] + 1 == dp[i][0]:
        res += str(a[j])
        i -= l[a[j]]
        break
      else:
        pass
  print(res)