import math import statistics

s = list("abcdefghijklmnopqrstuvwxyz")
S = list("ABCDEFGHIJKLMNOPQRSTUVWXYX")
x = input()

x = x.swapcase()

x = list(x)
x.reverse()

for i in range(len(x)):
	for j in range(len(s)):
    		if x[i]==s[j]:
        		x[i] = s[(j+3)%26]
        		break
	for k in range(len(S)):
    		if x[i]==S[k]:
        		x[i] = S[(k+3)%26]
       		 	break

x = ''.join(x)
print(x)