nwerc-082 5 years ago
parent
commit
3605f3204f
  1. 5
      C.py

5
C.py

@ -0,0 +1,5 @@
from __future__ import print_function
import sys
P = sys.stdin.readline().rstrip()
N = 26-len(set(P))
print(N if N != 0 else "impossible")
Loading…
Cancel
Save