#include <iostream>
#include <string>

int main() {
    std::string ciphertext;
    std::getline(std::cin, ciphertext);

    std::string plaintext;
    for (char c : ciphertext) {
        if (c >= 'A' && c <= 'Z') {
            // 解密逻辑
            char decrypted = (c - 'A' - 5 + 26) % 26 + 'A';
            plaintext += decrypted;
        } else {
            plaintext += c;
        }
    }

    std::cout << plaintext << std::endl;

    return 0;
}