A large software development company employs 100 computer programmers. Of them, 45 areproficient in Java, 30 in C, 20 in Python,
6 in C and Java, 1 in Java and Python, 5 in C andPython, and just 1 programmer is proficient in all three languages above. Determine the numberof computer programmers that are not proficient in any of these three languages.