Problem:
Score : 200 points

Problem Statement

You have a digit sequence S of length 4. You are wondering which of the following formats S is in:

YYMM format: the last two digits of the year and the two-digit representation of the month (example: 01 for January), concatenated in this order

MMYY format: the two-digit representation of the month and the last two digits of the year, concatenated in this order

If S is valid in only YYMM format, print YYMM; if S is valid in only MMYY format, print MMYY; if S is valid in both formats, print AMBIGUOUS; if S is valid in neither format, print NA.

Constraints

S is a digit sequence of length 4.

Input

Input is given from Standard Input in the following format:

S

Output

Print the specified string: YYMM, MMYY, AMBIGUOUS or NA.

Sample Input 1

1905

Sample Output 1

YYMM

May XX19 is a valid date, but 19 is not valid as a month. Thus, this string is only valid in YYMM format.

Sample Input 2

0112

Sample Output 2

AMBIGUOUS

Both December XX01 and January XX12 are valid dates. Thus, this string is valid in both formats.

Sample Input 3

1700

Sample Output 3

NA

Neither 0 nor 17 is valid as a month. Thus, this string is valid in neither format.

Solution in C++14 (GCC 5.4.1) (judge verdict: Wrong Answer)

#include<iostream>
using namespace std;
int main()
{
	int n,a=0,b=0,k=0;
	cin>>n;
    a=n%10;
    n=n/10;
    a+=(10*(n%10));
    n=n/10;
	cout<<a<<endl;
	b=n%10;
	n=n/10;
	b+=(10*(n%10));
	cout<<b<<endl;
	
	if(a>0&&a<13&&b>0&&b<13) cout<<"AMBIGUOUS";
	else if(a>0&&a<13) cout<<"YYMM";
	else if(b>0&&b<13) cout<<"MMYY";
	else cout<<"NA";
	
	
}