k=input("Key: ").upper().replace("J","I")
t=input("Text: ").upper().replace("J","I").replace(" ","")
a="ABCDEFGHIKLMNOPQRSTUVWXYZ"
for c in k:a=a.replace(c,"")
m=k+a;r=""
if len(t)%2:t+="X"
for i in range(0,len(t),2):
    a,b=m.index(t[i]),m.index(t[i+1])
    r+=m[a+1 if a//5==b//5 else (a+5)%25 if a%5==b%5 else (a//5)*5+b%5]
    r+=m[b+1 if a//5==b//5 else (b+5)%25 if a%5==b%5 else (b//5)*5+a%5]
print("Enc:",r)