func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n;     cin >> n;     int a[16] = {0};     int index = 0;     for (int i = 1; i <= n; i++) {       string s = to_string(i);       bool lucky = true;       for (int j = 0; j < (s.length()); j++) {         if (s[j] !=  4  && s[j] !=  7 ) {           lucky = false;           break;         }       }       if (lucky) {         a[index] = i;         index++;       }     }     for (int i = 0; i < 16; i++) {       if (a[i] != 0) {         if (n % a[i] == 0) {           cout <<  YES ;           return 0;         }       }     }     cout <<  NO ;   }   