N=int(input())
KCPC=['#...#.#####', '#.##..#....', '##....#....', '#.##..#....', '#...#.#####', '...........', '####..#####', '#...#.#....', '####..#....', '#.....#....', '#.....#####']
art=[]
for _ in range(N):
  art.append(input())
k=N//11
flag=True
for i in range(N):
  for j in range(N):
    if art[i][j]!=KCPC[i//k][j//k]:
      flag=False
      break
if flag:
  print('KCPC')
else:
  print('KUPC')