func_code_string: #include <bits/stdc++.h>   using namespace std;   double const pi = 3.14159265358979;   int const MAXN = 2000000;   long long const MOD = 1000000007;   long long const INF = 1000000000000000000ll;   int a[2000000], d[2000000];   bool is[2000000];   int main() {     int n, res = 0;     scanf( %d , &n);     for (int i = 0; i < (int)(n); i++) {       scanf( %d , &a[i]);       is[a[i]] = 1;     }     for (int i = (int)1; i <= (int)(1000000); i++) {       d[i] = 1;     }     for (int i = 0; i < (int)(n); i++) {       int k = 2;       while (a[i] * k <= 1000000) {         d[a[i] * k] = max(d[a[i] * k], d[a[i]] + 1);         k++;       }       res = max(res, d[a[i]]);     }     printf( %d n , res);     return 0;   }   