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  1. #include <bits/stdc++.h>
  2.  
  3. using namespace std;
  4.  
  5. class FindStringEasy
  6. {
  7. public:
  8.     string ans = "" ;
  9.     int a ;
  10.     int cnt(string s)
  11.     {
  12.         int n = s.size() ;
  13.         int cnt = 0 ;
  14.         for(int i = 0 ; i < n ; ++i)
  15.         {
  16.             string s2 = "" ;
  17.             for(int j = i ; j < n ; ++j)
  18.             {
  19.                 s2 += s[j] ;
  20.                 string s3 = s2 ;
  21.                 reverse(s3.begin() , s3.end());
  22.                 if(s2 == s3)
  23.                     cnt++;
  24.             }
  25.         }
  26.         return cnt ;
  27.     }
  28.     void solve(string s)
  29.     {
  30.         if(ans.size() > 0)
  31.             return ;
  32.         int x = cnt(s) ;
  33.         if(x == a)
  34.         {
  35.             ans = s ;
  36.             return ;
  37.         }
  38.         if(x > a)
  39.             return ;
  40.         solve(s + 'a');
  41.         solve(s + 'b');
  42.     }
  43.     string withPalindromicSubstrings(int n)
  44.     {
  45.         a = n ;
  46.         solve("");
  47.         return ans ;
  48.     }
  49. };
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin 
Standard input is empty
compilation info 
/usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/Scrt1.o: In function `_start':
(.text+0x20): undefined reference to `main'
collect2: error: ld returned 1 exit status
stdout 
Standard output is empty
https://ideone.com/woBwz6
language:
C++14 (gcc 8.3)
created:
5 years ago
visibility:
public

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