func_code_string: #include <bits/stdc++.h>   using namespace std;   int solve(int x) {     int sum = 0;     while (x >= 5) {       sum += x / 5;       x /= 5;     }     return sum;   }   int main() {     int m;     cin >> m;     int k = 0;     vector<long long> vec;     for (int i = 1; i <= 1000000; i++) {       long long sum = solve(i);       if (sum == m) {         k++;         vec.push_back(i);       } else if (sum > m)         break;     }     cout << k << endl;     for (int i = 0; i < k; i++) cout << vec[i] <<    ;     return 0;   }   