题解 | #简单密码#

#include <cctype>
#include <iostream>
#include <string>
#include <map>
using namespace std;

int main() {
    string s;
    getline(cin, s);
    map<char,int> m;
    m['a'] = m['b'] = m['c'] = 2;
    m['d'] = m['e'] =m['f'] = 3;
    m['g']=m['h']=m['i'] = 4;
    m['j']=m['k']=m['l']=5;
    m['m']=m['n']=m['o']=6;
    m['p']=m['q']=m['r']=m['s'] = 7;
    m['t']=m['u']=m['v']=8;
    m['w']=m['x']=m['y']=m['z']=9;
    for(auto i:s){
        if(i<='Z'&&i>='A'){
            if(i=='Z'){
                cout<<'a';
            }else {
                cout<<(char)tolower(i+1);
            }
        }else if(i<='z'&&i>='a'){
            cout<<m[i];
        }else{
            cout<<i;
        }
    }
}   
    
// 64 位输出请用 printf("%lld")

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