code/old_homework/homework_11.30.cpp

#include<iostream>  //字母位移

using namespace std;

/*
int main(){
    char CIN,COUT;

    cin >> CIN;

    int CIN2 = CIN+=3;
    
    COUT = CIN2;

    cout <<COUT;
    return 0;
}


int main(){
    while (true)
    {
        char letter;
        int n = 3;

        cin >>letter;
        
        if (letter >= 'A' && letter <= 'Z') {
            char new_letter = (letter - 'A' + n) % 26 + 'A';
            cout << new_letter<<endl;
        }
    }
    
    return 0;
}*/

int main(){
    while (true)
    {
        char ch1,ch2;

        int n = 3;

        cin >>ch1;
        ch2 = ((ch1 -65)+n) %26 +65;
    
        cout <<ch2<<endl;
    }
    
    
    return 0;
}