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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. #define el "\n"
  4. #define ll long long
  5. #define ull unsigned long long
  6. #define se second
  7. #define fi first
  8. #define be begin()
  9. #define en end()
  10. #define Faster cin.tie(0); cout.tie(0); ios_base::sync_with_stdio(0);
  11.  
  12. int main()
  13. {
  14.     Faster;
  15.     string s; cin >> s;
  16.     int ans = 0;
  17.     for(int i = 0; i < s.size(); i++)
  18.     {
  19.         if(s.size() - i - 1 < ans) break;
  20.         unordered_map<char,int> mp;
  21.         for(int j = i; j < s.size();j++)
  22.         {
  23.             mp[s[j]]++;
  24.             int tmp = mp[s[i]], ok = 1;
  25.             for(pair<char,int> x : mp)
  26.             {
  27.                 if(x.se != tmp)
  28.                 {
  29.                     ok = 0;
  30.                     break;
  31.                 }
  32.             }
  33.             if(ok == 1) ans = max(ans, j - i + 1);
  34.         }
  35.     }
  36.     cout << ans;
  37.     return 0;
  38. }
  39.  
Success #stdin #stdout 0s 5272KB
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https://ideone.com/YqJPFq
language:
C++14 (gcc 8.3)
created:
12 hours ago
visibility:
public

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