#include using namespace std; typedef long long LL; const int N = 110; int a[N], al; string b[N]; int bl; int main() { LL n; cin >> n; if (n == 0) { cout << "00"; exit(0); } while (n) { int x = n % 2; n /= 2; a[++al] = x; } // 补全零 al = ceil(1.0 * al / 7) * 7; for (int i = al; i > 1; i -= 7) { string s = ""; for (int j = i; j > i - 7; j--) s = s + to_string(a[j]); if (i == 7) b[++bl] = "1" + s; else b[++bl] = "0" + s; } // 2进制4位一组生成16进制数 for (int i = bl; i >= 1; i--) { // cout << b[i] << endl; for (int j = 0; j < b[i].size(); j += 4) { int x = (b[i][j] - '0') * 8 + (b[i][j + 1] - '0') * 4 + (b[i][j + 2] - '0') * 2 + (b[i][j + 3] - '0'); if (x >= 10) cout << char(x - 10 + 'A'); else cout << x; } cout << " "; } return 0; }