Buggy python submission (verdict: Runtime Error):
n, m = map(int, input().split())
a = map(int, input().split())

t = ['_', 2, 5, 5, 4, 5, 6, 3, 7, 6]

# n 本使ってできる最大の桁数
dp = [-1 for _ in range(n + 1)]
dp[0] = 0

digs = [[] for _ in range(n + 1)]

available = {}
for x in a:
    available[t[x]] = x

for k, v in available.items():
    for i in range(len(dp)):
        if dp[i] >= 0 and i + k < len(dp):
            if dp[i + k] < dp[i] + 1:
                dp[i + k] = dp[i] + 1
                s = digs[i].copy()
                s.append(v)
                digs[i + k] = list(reversed(sorted(s)))
            elif dp[i + k] == dp[i] + 1:
                s = digs[i].copy()
                s.append(v)
                nxt = list(reversed(sorted(s)))
                if digs[i + k] < nxt:
                    dp[i + k] = dp[i] + 1
                    digs[i + k] = nxt

print(''.join(map(str, reversed(sorted(digs[n])))))


Fixed submission:
n, m = map(int, input().split())
aa = reversed(sorted(map(int, input().split())))

t = ['_', 2, 5, 5, 4, 5, 6, 3, 7, 6]

# n 本使ってできる最大の桁数
dp = [-1 for _ in range(n + 1)]
dp[0] = 0

for a in aa:
    for i in range(len(dp)):
        if dp[i] >= 0 and i + t[a] < len(dp):
            dp[i + t[a]] = max(dp[i + t[a]], dp[i] * 10 + a)

print(dp[n])

Buggy python submission (verdict: Time Limit Exceeded):
n, m = map(int, input().split())
values = list(map(int, input().split()))

count_table = [None, 2,5,5,4,5,6,3,7,6]

dp = [None for _ in range(n + 1)]
dp[0] = {0: 0}

for i in range(m):
    my_value = values[i]
    for j in range(n):
        dic = dp[j]
        if dic is not None and len(dic) > 0:
            my_count = 1
            while j + count_table[my_value] * my_count <= n:
                already = dp[j + count_table[my_value] * my_count] or {}
                new_dic = {k: v for k, v in dic.items()}
                new_dic[my_value] = my_count

                s = ''
                for value, cnt in reversed(sorted(already.items())):
                    s += str(value) * cnt
                s_already = s
                s = ''
                for value, cnt in reversed(sorted(new_dic.items())):
                    s += str(value) * cnt

                if s_already == '':
                    dp[j + count_table[my_value] * my_count] = new_dic
                elif s == '':
                    pass
                elif int(s_already) < int(s):
                    dp[j + count_table[my_value] * my_count] = new_dic

                my_count += 1

pin_dic = dp[n]

s = ''
for value, cnt in reversed(sorted(pin_dic.items())):
    s += str(value) * cnt
print(s)


Fixed submission:
n, m = map(int, input().split())
aa = reversed(sorted(map(int, input().split())))

t = ['_', 2, 5, 5, 4, 5, 6, 3, 7, 6]

# n 本使ってできる最大の桁数
dp = [-1 for _ in range(n + 1)]
dp[0] = 0

for a in aa:
    for i in range(len(dp)):
        if dp[i] >= 0 and i + t[a] < len(dp):
            dp[i + t[a]] = max(dp[i + t[a]], dp[i] * 10 + a)

print(dp[n])

Buggy python submission (verdict: Runtime Error):
n, m = map(int, input().split())
values = list(map(int, input().split()))

count_table = [None, 2,5,5,4,5,6,3,7,6]

dp = [None for _ in range(n + 1)]
dp[0] = {0: 0}

for i in range(m):
    my_value = values[i]
    for j in range(n):
        dic = dp[j]
        if dic is not None and len(dic) > 0:
            my_count = 1
            while j + count_table[my_value] * my_count <= n:
                already = dp[j + count_table[my_value] * my_count] or {}
                new_dic = {my_value: my_count, **dic}

                s = ''
                for value, cnt in reversed(sorted(already.items())):
                    s += str(value) * cnt
                s_already = s
                s = ''
                for value, cnt in reversed(sorted(new_dic.items())):
                    s += str(value) * cnt

                if s_already == '':
                    dp[j + count_table[my_value] * my_count] = new_dic
                elif s == '':
                    pass
                elif int(s_already) < int(s):
                    dp[j + count_table[my_value] * my_count] = new_dic

                my_count += 1

pin_dic = dp[n]

s = ''
for value, cnt in reversed(sorted(pin_dic.items())):
    s += str(value) * cnt
print(s)


Fixed submission:
n, m = map(int, input().split())
aa = reversed(sorted(map(int, input().split())))

t = ['_', 2, 5, 5, 4, 5, 6, 3, 7, 6]

# n 本使ってできる最大の桁数
dp = [-1 for _ in range(n + 1)]
dp[0] = 0

for a in aa:
    for i in range(len(dp)):
        if dp[i] >= 0 and i + t[a] < len(dp):
            dp[i + t[a]] = max(dp[i + t[a]], dp[i] * 10 + a)

print(dp[n])

Buggy python submission (verdict: Runtime Error):
n, m = map(int, input().split())
values = list(map(int, input().split()))

count_table = [None, 2,5,5,4,5,6,3,7,6]

dp = [{} for _ in range(n + 1)]
dp[0] = {0: 0}

for i in range(m):
    my_value = values[i]
    for j in range(n):
        dic = dp[j]
        if len(dic) > 0:
            my_count = 1
            while j + count_table[my_value] * my_count <= n:
                already = dp[j + count_table[my_value] * my_count]
                new_dic = {my_value: my_count, **dic}




                s = ''
                for value, cnt in reversed(sorted(already.items())):
                    s += str(value) * cnt
                s_already = s
                s = ''
                for value, cnt in reversed(sorted(new_dic.items())):
                    s += str(value) * cnt

                if s_already == '':
                    dp[j + count_table[my_value] * my_count] = new_dic
                elif s == '':
                    pass
                elif int(s_already) < int(s):
                    dp[j + count_table[my_value] * my_count] = new_dic



                my_count += 1

pin_dic = dp[n]

s = ''
for value, cnt in reversed(sorted(pin_dic.items())):
    s += str(value) * cnt
print(s)


Fixed submission:
n, m = map(int, input().split())
aa = reversed(sorted(map(int, input().split())))

t = ['_', 2, 5, 5, 4, 5, 6, 3, 7, 6]

# n 本使ってできる最大の桁数
dp = [-1 for _ in range(n + 1)]
dp[0] = 0

for a in aa:
    for i in range(len(dp)):
        if dp[i] >= 0 and i + t[a] < len(dp):
            dp[i + t[a]] = max(dp[i + t[a]], dp[i] * 10 + a)

print(dp[n])