N = int(input())
matchsticks = [6, 2, 5, 5, 4, 5, 6, 3, 7, 6]
min_matchsticks = min(matchsticks)

num_digits = N // min_matchsticks
remaining_matchsticks = N % min_matchsticks

result = [str(matchsticks.index(min_matchsticks))] * num_digits

for i in range(num_digits):
    for j in range(9, -1, -1):
        if matchsticks[j] - min_matchsticks <= remaining_matchsticks:
            result[i] = str(j)
            remaining_matchsticks -= matchsticks[j] - min_matchsticks
            break

print("".join(result))