import sys

try:
    import mydebug

    def dprint(*objects):
        print(*objects)
except:
    def dprint(*objects, sep='', end='\n'): pass

# d, p = [int(x) for x in input().split()]
n = int(input())

d = {}
d[0] = 6  #
d[1] = 2
d[2] = 5  #
d[3] = 5  #
d[4] = 4
d[5] = 5
d[6] = 6  #
d[7] = 3
d[8] = 7
d[9] = 6

no = (0, 2, 3, 6)

r = {v: k for k, v in d.items() if k not in no}
dprint(r)

"""
if n == 3:
    print(7)
    sys.exit(0)
"""

ans = "1" * (n // 2)
if n % 2 == 1:
    ans = "7" + ans[1:]

print(ans)