func_code_string: #include <bits/stdc++.h>   using namespace std;   int i, j, viz[1005], n;   int sol[100005], nrsol;   int main(void) {     cin >> n;     for (i = 2; i <= n; ++i)       if (viz[i] == 0) {         int nrp = i;         int put = nrp;         while (put <= n) {           sol[++nrsol] = put;           put *= nrp;         }         for (j = 2; j * i <= n; ++j) viz[i * j] = 1;       }     cout << nrsol <<   n ;     for (i = 1; i <= nrsol; ++i) cout << sol[i] <<    ;     return 0;   }   