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;
        } else if (str!="START"&&str!="END")
        {
            for (int i = 0; i < str.size(); ++i) {
                if (str[i]>='a'&&str[i]<='z'||str[i]>='A'&&str[i]<='Z')
                {
                    str[i]=(str[i]-'A'-5+26)%26+'A';
                }
            }
            cout<<str<<endl;
        }
    }
}