func_code_string: #include <bits/stdc++.h>   using namespace std;   int a[100000], b, c, n, m, x, y, z, s;   int main() {     cin >> a[0] >> a[1] >> n;     if (n <= 1)       cout << a[n];     else {       for (int i = 2; i <= n; i++) {         a[i] = a[i - 1] + a[i - 2];       }       cout << a[n];     }     return 0;   }   