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