func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     string s;     while (cin >> s) {       int ans = 1e6;       for (int i =  a ; i <=  z ; i++) {         int t = 0, k = 0;         for (int j = 0; j < s.length(); j++) {           if (s[j] == i)             t = 0;           else             t++;           k = max(k, t);         }         ans = min(ans, k);       }       cout << ans + 1 << endl;     }     return 0;   }   