import sys
input = lambda :sys.stdin.readline()[:-1]
ni = lambda :int(input())
na = lambda :list(map(int,input().split()))
yes = lambda :print("yes");Yes = lambda :print("Yes");YES = lambda : print("YES")
no = lambda :print("no");No = lambda :print("No");NO = lambda : print("NO")
#######################################################################

ans = []
for i in range(1,3):
    for j in range(1, 3):
        for k in range(1, 3):
            for l in range(1, 3):
                t = []
                t.append("N")
                if i == 2:
                    t = t + t
                t.append("U")
                if j == 2:
                    t = t + t
                t.append("P")
                if k == 2:
                    t = t + t
                t.append("C")
                if l == 2:
                    t = t + t
                ans.append("".join(t))
ans.sort()

n = ni()
print(ans[n-1])