Problem:
Score : 100 points

Problem Statement

Snuke built an online judge to hold a programming contest.

When a program is submitted to the judge, the judge returns a verdict, which is a two-character string that appears in the string S as a contiguous substring.
(The judge can return any two-character substring of S.)

Determine whether the judge can return the string AC as the verdict to a program.

Constraints

2 \leq |S| \leq 5

S consists of uppercase English letters.

Input

Input is given from Standard Input in the following format:

S

Output

If the judge can return the string AC as a verdict to a program, print Yes; if it cannot, print No.

Sample Input 1

BACD

Sample Output 1

Yes

The string AC appears in BACD as a contiguous substring (the second and third characters).

Sample Input 2

ABCD

Sample Output 2

No

Although the string ABCD contains both A and C (the first and third characters), the string AC does not appear in ABCD as a contiguous substring.

Sample Input 3

CABD

Sample Output 3

No

Sample Input 4

ACACA

Sample Output 4

Yes

Sample Input 5

XX

Sample Output 5

No

Solution in C++ (GCC 5.4.1) (judge verdict: Accepted)

#include<iostream>
#include<cstring>
#include<stack>
using namespace std;
char s[10];
stack<int> q;
int main()
{
	ios::sync_with_stdio(false);
	cin>>s;
	int len=strlen(s);
	for(int i=0;i<=len;i++)
	{
		if(s[i]=='A')
		  q.push(s[i]);
		else
		if(s[i]=='C'&&s[i-1]=='A')
		{
			if(!q.empty())
			{
				cout<<"Yes"<<endl;
				return 0;
			}
		}
	}
	cout<<"No"<<endl;
	return 0;
}