from itertools import product
cand = []
for prod in product(range(1,3),repeat=4):
    # print(prod)
    a,b,c,d = prod
    word = f'N{a}U{b}P{c}C{d}'
    # print(word)
    tmp = ''
    for i in range(8):
        if i%2 == 0:
            tmp = tmp + word[i]
        else:
            if word[i] == '2':
                tmp = tmp + tmp
    # print(tmp)
    cand.append(tmp)
cand.sort()
k = int(input())
k -= 1
print(cand[k])