def main():
    a = []
    for n in range(1, 3):
        cn = 'N'*n
        for u in range(1, 3):
            cu = (cn + 'U')*u
            for p in range(1, 3):
                cp = (cu + 'P')*p
                for c in range(1, 3):
                    cc = (cp + 'C')*c
                    a.append(cc)

    a.sort()
    print(a[int(input())-1])


if __name__ == '__main__':
    main()