func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     vector<int> v(n);     map<int, int> freq;     for (int i = 0; i < n; i++) cin >> v[i];     int min = v[0], max = v[0], maximum = 0;     freq[v[0]]++;     int i = 0, j = 1;     while (j < n) {       while (((v[j] == min || v[j] == max) ||               ((min == max) && abs(v[j] - min) == 1)) &&              j < n) {         freq[v[j]]++;         if (v[j] > min) max = v[j];         if (v[j] < min) min = v[j];         j++;       }       if (j - i > maximum) maximum = j - i;       while (!((v[j] == min || v[j] == max) ||                ((min == max) && abs(v[j] - min) == 1)) &&              i < n) {         freq[v[i]]--;         if (freq[v[i]] == 0) {           if (min == max) {             min = v[j];             max = v[j];             freq[v[j]]++;             j++;           } else if (v[i] == max)             max--;           else if (v[i] == min)             min++;         }         i++;       }     }     cout << maximum;     return 0;   }   