from itertools import product
K = int(input())

data = []

def decomp(s):
    res = []
    for i in range(8):
        ss = s[i]
        if i%2 == 0:
            res.append(ss)
        else:
            if ss == '2':
                res = res[:] + res[:]
    return ''.join(res)

#print(decomp('N2U2P2C2'))

NUPC = 'NUPC'
for pat in product(['1', '2'], repeat=4):
    s = []
    for i in range(8):
        if i%2 == 0:
            s.append(NUPC[i//2])
        else:
            s.append(pat[i//2])
    data.append(decomp(s))

data.sort()
print(data[K - 1])