func_code_string: #include <bits/stdc++.h>   using namespace std;   int n, arr[100005];   int main() {     cin >> n;     for (int i = 0; i < n; i++) cin >> arr[i];     int cur = min(2, n);     int best = min(2, n);     for (int i = 2; i < n; i++) {       if (arr[i - 2] + arr[i - 1] == arr[i])         cur++;       else         cur = 2;       best = max(best, cur);     }     cout << best << endl;   }   