While I was submitting solution for http://www.codeforces.com/contest/86/problem/D, I was getting TLE.

So, I searched for getting faster inputs in C++. Somehow, It was Accepted. But, I didn't understand weird behavior of inline functions.

I think using inline functions make program runs faster, but in my case it was making TLE.

My Submissions with minor changes in 'readLongLong' function:

• No Inline and Pass By Reference : Accepted

http://www.codeforces.com/contest/86/submission/18234613

• Inline and Pass By Reference : TLE at test 42

http://www.codeforces.com/contest/86/submission/18234625

• No Inline and value return : TLE at test 42

http://www.codeforces.com/contest/86/submission/18234694

• Inline and value return : TLE at test 51

http://www.codeforces.com/contest/86/submission/18234684

Inline with Pass By Reference : TLE

inline void readLongLong (ll &val) {
	char ch;
	val = 0;
	while (true)
	{
		ch = getchar();
		if (ch < '0' || ch > '9') break;
		val = val*10 + (ch - '0');
	}
}

No Inline with Pass By Reference : Accepted

void readLongLong (ll &val) {
	char ch;
	val = 0;
	while (true)
	{
		ch = getchar();
		if (ch < '0' || ch > '9') break;
		val = val*10 + (ch - '0');
	}
}