题解 | #简单密码#

#include <bits/stdc++.h>
using namespace std;

int main() {
    string str;
    while (getline(cin, str)) {
        if (str == "ENDOFINPUT")break;
        getline(cin, str);
        for (int i = 0; i < str.size(); i++) {
            if (str[i] >= 'A' && str[i] <= 'Z') {
                str[i] = (str[i] - 5 + 26 - 'A') % 26 + 'A';
            }
        }
        cout << str << endl;
        getline(cin, str);
    }
    return 0;
}