To Roman Numerals
Write in Roman numerals (I=1, V=5, X=10, L=50, C=100, D=500, M=1000, using subtractive forms like IV, IX, XL, XC, CD, CM).
Input
A single integer .
Output
The Roman numeral.
Constraints
Sample 1
Input
1994
Output
MCMXCIV
Sample 2
Input
4
Output
IV