func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int a[1000], b, c, d;     cin >> b >> c >> d;     a[0] = b;     a[1] = c;     for (int i = 2; i <= d; i++) {       a[i] = a[i - 1] + a[i - 2];     }     cout << a[d];   }   