def f(S):
    T = []
    for i in range(8):
        if i % 2 == 0:
            T.append(S[i])
        else:
            if int(S[i]) == 2:
                T += T
    return ''.join(T)

N = int(input())
A = []
for i in range(1, 3):
    for j in range(1, 3):
        for k in range(1, 3):
            for l in range(1, 3):
                A.append(f(f'N{i}U{j}P{k}C{l}'))
A.sort()
print(A[N - 1])