from itertools import permutations

N = int(input())

L = []
for a, b, c, d, e, f, g in permutations(range(10), 7):
    if 100*a+10*b+c + 100*d+10*e+f == 1000+100*g+10*c+b \
    and [1] not in [a, b, c, d, e, f] \
    and len(set([a, b, c, d, e, f])) == 6:
        L += [1000+100*g+10*c+b]
        break

for a, b, c, d, e, f, g, h, i in permutations(range(10), 9):
    if 1000*a+100*a+10*b+c + 1000*d+100*e+10*f+g == 10000+1000*h+100*b+10*c+i \
    and [1] not in [a, b, c, d, e, f, g, h, i] \
    and len(set([a, b, c, d, e, f, g, h, i])) == 9:
        L += [10000+1000*h+100*b+10*c+i]
        break

L += [841341]

print(L[N-1])