func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     long long l, r, k, p, num;     cin >> l >> r >> k;     num = 1;     int ans = 0;     while (num <= r) {       if (num >= l && num <= r) {         cout << num;         ans++;       }       num *= k;       if (ans != 0) cout << endl;       if (num % k != 0) break;     }     if (ans == 0) printf( -1 n );     return 0;   }   