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## Statement

## Goal

You are given 2 expressions representing 2 numbers written in roman numerals.You have to provide the result of the sum of these 2 numbers, also in roman numerals.

The character

The character

The character

Input

**Line 1**:

`Rom1`(the 1st number in roman numerals)

**Line 2**:

`Rom2`(the 2nd number in roman numerals)

Output

The result of

`Rom1`+`Rom2`written in roman numeralsConstraints

1 ≤

1 ≤

1 ≤

`Rom1`≤ 49991 ≤

`Rom2`≤ 49991 ≤

`Rom1`+`Rom2`≤ 4999Example

Input

VI VII

Output

XIII

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