func_code_string: #include <bits/stdc++.h>   using namespace std;   int n, a[1000000], k, cnt, ans;   int main() {     cin >> n;     a[0] = 1;     a[1] = 1;     a[2] = 0;     for (int i = 1; i < n; i++) {       if (a[i] == 0) {         for (int j = i * i; j <= n; j += i) {           a[j] = 1;         }       }     }     for (int i = 1; i <= n; i++) {       cnt = 0;       for (int j = i; j > 0; j--) {         if (i % j == 0) {           k = i / j;         } else {           continue;         }         if (a[k] == 0) {           cnt++;         }       }       if (cnt == 2) {         ans++;       }     }     cout << ans;   }   