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  1. #include <iostream>
  2. #include <string>
  3. #include <vector>
  4.  
  5. using namespace std;
  6.  
  7. bool check(string &a,string& b){
  8.     int k=0;
  9.     for(int i=0;i<a.size();i++)if(a[i]!=b[i]){
  10.         k++;
  11.         if(k==2)return false;
  12.     };
  13.     return true;
  14. };
  15.  
  16. int main()
  17. {
  18.     vector<string> s;
  19.     int n;
  20.     cin>>n;
  21.     s.resize(n);
  22.     for(int i=0;i<n;i++)cin>>s[i];
  23.     bool fl=false;
  24.     for(int i=0;i<n;i++){
  25.         fl=false;
  26.         for(int j=0;j<n;j++)if(!check(s[i],s[j])){
  27.             fl=true;
  28.             break;
  29.         };
  30.         if(!fl){
  31.             cout<<s[i];
  32.             break;
  33.         };
  34.     };
  35.     return 0;
  36. }
  37.  
Success #stdin #stdout 0s 3464KB
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https://ideone.com/ItNqwe
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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