class py_solution:  
    def int_to_Roman(self, num):  
        val = [  
            1000, 900, 500, 400,  
            100, 90, 50, 40,  
            10, 9, 5, 4,  
            1  
            ]  
        syb = [  
            "M", "CM", "D", "CD",  
            "C", "XC", "L", "XL",  
            "X", "IX", "V", "IV",  
            "I"  
            ]  
        roman_num = ''  
        i = 0  
        while  num > 0:  
            for _ in range(num // val[i]):  
                roman_num += syb[i]  
                num -= val[i]  
            i += 1  
        return roman_num  
  
  
print(py_solution().int_to_Roman(1))  
print(py_solution().int_to_Roman(4000))