Same here. What's going on actually?

I don't know that how to open terminal from Sublime Text. So, I use INPUT_OUTPUT.

#define INPUT_OUTPUT { \
	freopen("input.txt", "r", stdin); \
	freopen("output.txt", "w", stdout); \
}
int main()
{
	INPUT_OUTPUT;
	
	return 0;
}

I copy & paste input in a text file then I press CTLR+B and show the output in another text file(separate windows view in 1) :D. Watch the video to see my setup: The Video

Well, I solved A by using if-else. :P

Thank you too for the information! :)

Thank you for the information! :)

It would be better if someone post English editorial of AtCoder contests!