#define _CRT_SECURE_NO_WARNINGS
#include<iostream>
using namespace std;
int main()
{
	int i, j;
	cin >> hex >> i >> showbase >> j;
	cout << i << '\t' << j;
	cout << endl << oct << i << '\t' << showbase << j << endl;
	system("pause");
	return 0;
}

输入输出的数制控制_C