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