func_code_string: #include <bits/stdc++.h>   using namespace std;   const long long INF = 8e+1000;   int n, k, x, c[1000];   int main() {     ios_base::sync_with_stdio(false);     cin >> n >> k >> x;     for (int i = 0; i < n; i++) cin >> c[i];     int res = 0;     for (int i = 0; i < n - 1; i++) {       if (c[i] == c[i + 1] && c[i] == x) {         int l = i - 1, r = i + 2;         while (l >= 0 && r < n) {           bool mark = false;           if (c[l] != c[r]) break;           if (l > 0 && c[l - 1] == c[l]) l--, mark = true;           if (r < n - 1 && c[r + 1] == c[r]) r++, mark = true;           if (mark == false) break;           l--, r++;         }         res = max(res, r - l - 1);       }     }     cout << res;     return 0;   }   