#include <iostream> #include <string> using namespace std; string DecToHex(int n) { string hex = ""; while (n) { int digit = n % 6; hex = to_string(digit) + hex; n /= 6; } return hex; } int main() { int n; cin >> n; cout << DecToHex(n) << endl; } // 64 位输出请用 printf("%lld")