БГУ Личное Первенство
Corona2020
Ziya suspects that he has become infected with a coronavirus. In this regard, he conducts research on his DNA and, because of calculations, finds out that three different numbers a, b and c are associated with his DNA. Ziya believes that if, by substituting in the expression a <> b <> c instead of (<>) + or -, you can get the number 2020, then he did not become infected with the coronavirus. Otherwise, if this is not possible, he becomes infected. Help Ziya find out if he got infected with the coronavirus.
Input data
One line contains the integers a, b, and c (1 ≤ a, b, c ≤ 10^8).
Output data
If Ziya is not infected, print the expression a <> b <> c which yields 2020. Otherwise, print the word CORONA. When outputting an expression, there should not be spaces between numbers and operators.
Examples
2019 2020 2021
2019-2020+2021
2019 2020 2022
CORONA