PAT 1034

 1 #include <vector>
 2 #include <iostream>
 3 #include <string>
 4 #include <fstream>
 5 
 6 #define OJ
 7 
 8 #ifdef OJ
 9 #define fin cin
10 #endif
11 
12 using namespace std;
13 
14 class User{
15 public:
16     User(){
17         modified = false;
18     }
19 
20     string name;
21     string passwd;
22     bool modified;
23 };
24 
25 vector<User> users;
26 
27 int main(){
28 #ifndef OJ
29     ifstream fin;
30     fin.open("in.data");
31 #endif
32 
33 
34     int N;
35     fin >> N;
36 
37     for (int i = 0; i < N; i++){
38         User user;
39         fin >> user.name >> user.passwd;
40         users.push_back(user);
41     }
42 
43     int mod_cnt = 0;
44     for (int i = 0; i < N; i++){
45         User &user = users[i];
46         string &str = user.passwd;
47         for (int j = 0; j < str.size(); j++){
48             bool modified = true;
49             if (str[j] == ‘1‘)
50                 str[j] = ‘@‘;
51             else if (str[j] == ‘0‘)
52                 str[j] = ‘%‘;
53             else if (str[j] == ‘l‘)
54                 str[j] = ‘L‘;
55             else if (str[j] == ‘O‘)
56                 str[j] = ‘o‘;
57             else
58                 modified = false;
59 
60             user.modified |= modified;
61         }
62         if (user.modified)
63             mod_cnt++;
64     }
65 
66     if (mod_cnt == 0){
67         cout << "There " << (N == 1 ? "is " : "are ") << N << (N == 1 ? " account" : " accounts") << " and no account is modified" << endl;
68 
69         return 0;
70     }
71 
72     cout << mod_cnt << endl;
73     for (int i = 0; i < N; i++){
74         User &user = users[i];
75         if (user.modified){
76             cout << user.name << " " << user.passwd << endl;
77         }
78     }
79 
80     return 0;
81 }