func_code_string: #include <bits/stdc++.h>   using namespace std;   const int N = 1000001;   int main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     int ans = 0, i, j, dp[N], half, n, a[N];     cin >> n;     for (i = 0; i < n; ++i) cin >> a[i];     for (i = n - 1; i >= 0; --i) {       dp[a[i]] = 1;       for (j = 2 * a[i]; j < N; j += a[i]) {         dp[a[i]] = max(dp[a[i]], dp[j] + 1);       }       ans = max(ans, dp[a[i]]);     }     cout << ans;   }   