C++ :

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

int main(){
	string s,r = "";
	getline(cin,s);
	int i;
	for(i = 0;i < s.size();i++){
		if(isupper(s[i])){
			if(s[i] >= 'F' && s[i] <= 'Z'){
				r += s[i] - 5;
			}else{
				r += s[i] + ('V'-'A');
			}
		}else{
			r = r + s[i];
		}
	}
	cout<<r<<endl;
	 
    return 0;
}

Python :

def jiemi(b):
    if b.isupper():
        if b=='A':
            return 'V'
        elif b=='B':
            return 'W'
        elif b=='C':
            return 'X'
        elif b=='D':
            return 'Y'
        elif b=='E':
            return 'Z'
        else:
            return chr(ord(b)-5)
    else:
        return b
str1=input()
for item in str1:
    print(jiemi(item),end="")