https://github.com/open-problem-solving/baekjoon
For solutions
num % 10 == 0
num % 10 == 1
num % 10 == 2
num % 10 == 3
num % 10 == 4
num % 10 == 5
num % 10 == 6
num % 10 == 7
num % 10 == 8
num % 10 == 9
t