func_code_string: #include <bits/stdc++.h>   using namespace std;   int a[600000];   int main() {     int n = 6 * 1e5;     a[0] = 0;     for (int i = 1; i < n; ++i) {       int cur = i;       int t = 0;       while (cur % 5 == 0) {         cur /= 5;         t++;       }       a[i] = a[i - 1] + t;     }     int m;     cin >> m;     vector<int> res;     for (int i = 1; i < n; ++i) {       if (a[i] == m) {         res.push_back(i);       }     }     cout << res.size() << endl;     for (int i = 0; i < res.size(); ++i) {       cout << res[i] <<    ;     }     return 0;   }   