#include <bits/stdc++.h> using namespace std; char s[100005]; int main(){ cin >> s; for (int i = strlen(s) - 1; i >= 0; -- i){ if (s[i] >= 'a' && s[i] <= 'z'){ if (s[i] >= 'x' && s[i] <= 'z'){ s[i] = char(s[i] - 23); } else{ s[i] = char(s[i] + 3); } s[i] = char(s[i] - 'a' + 'A'); } else{ if (s[i] >= 'X' && s[i] <= 'Z'){ s[i] = char(s[i] - 23); } else{ s[i] = char(s[i] + 3); } s[i] = char(s[i] - 'A' + 'a'); } cout << s[i]; } return 0; }