Problems
Roman numerals
Roman numerals
Count the sum of two natural numbers A
and B
, which have written in roman system of numeration. The answer you must write too in roman system of numeration.
M = 1000
, D = 500
, C = 100
, L = 50
, X = 10
, V = 5
, I = 1
(all numbers is less 2000).
Input data
In line wrote two number of roman system numeration, between which stand mark "+".
Output data
One number, sum of numbers is roman system numeration too. Numbers in roman system numeration wrote big Latin letters.
Examples
Input example #1
III+IV
Output example #1
VII