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  1. #include <iostream>
  2. #include<string>
  3. #include<vector>
  4. #include<algorithm>
  5. #define pb push_back
  6. using namespace std;
  7.  
  8. int main() 
  9. {
  10.     int x,y,t,n;
  11.     string s,w;
  12.     vector<string>v;
  13.     cin>>t;
  14.     while(t--)
  15.     {
  16.         w="";
  17.         cin>>s>>n;
  18.         for(x=0;x<s.length();x++)
  19.         {
  20.             for(y=s.length()-x;y>=1;y--)
  21.             {
  22.                 w=s.substr(x,y);
  23.                 v.pb(w);
  24.             }
  25.         }
  26.         sort(v.begin(),v.end());
  27.         w="";
  28.         for(x=0;x<v.size();x++)
  29.         {
  30.             w=w+v[x];
  31.         }
  32.         cout<<w[n-1]<<endl;
  33.  
  34.     }
  35.  
  36. 	return 0;
  37. }
  38.  
Runtime error #stdin #stdout 0s 3476KB
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stdin
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Standard input is empty
stdout
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Standard output is empty
https://ideone.com/ef0TMz
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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