CodeForces 412C 手速题

 1 #include "iostream"
 2 #include "cstdio"
 3 #include "cstring"
 4 #include "algorithm"
 5 #include "vector"
 6 using namespace std;
 7 vector<string> str;
 8 int n;
 9 string res;
10 
11 int  main()
12 {
13     int i, j;
14     scanf("%d", &n);
15     str.resize(n + 1);
16     for(i = 1; i <= n; ++i) {
17         cin >> str[i];
18     }
19     int len = str[1].size();
20     for(i = 0; i <= len - 1; ++i) {
21         char c = str[1][i];
22         bool match = 1;
23         for(j = 2; j <= n; ++j) {
24             if(c == ‘?‘) {
25                 c = str[j][i];
26             }
27             else {
28                 if(c == str[j][i] || str[j][i] == ‘?‘) {
29                     continue;
30                 }
31                 else {
32                     match = 0;
33                     break;
34                 }
35             }
36         }
37         if(!match)
38             res.push_back(‘?‘);
39         else
40             res.push_back(c == ‘?‘? ‘x‘: c);
41     }
42     cout<<res<<endl;
43 }