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 (Python):

s = list(input())
left = int(s[0])*10+int(s[1])
right = int(s[2])*10+int(s[3])
if 0 < left <= 12:
    if 0 < right <= 12:
        print("AMBIGUOUS")
    else:
        print('MMYY')
elif 0 < right <= 12:
    print('YYMM')
else:
    print('NA')

Solution (Python):
S = input()
ans = 'NA'
mmyy = False
yymm = False
if S[0]=='0' and S[1]!='0':
  mmyy = True
if S[0]=='1' and (S[1]=='0' or S[1]=='1' or S[1]=='2'):
  mmyy = True
if S[2]=='0' and S[3]!='0':
  yymm = True
if S[2]=='1' and (S[3]=='0' or S[3]=='1' or S[3]=='2'):
  yymm = True
lis = [['NA','YYMM'],['MMYY','AMBIGUOUS']]
ans = lis[mmyy][yymm]

print(ans)

Solution (Python):
s=input()
if (s[0]=="0" and s[1]!="0") or (s[0]=="1" and int(s[1])<=2):
    if (s[2]=="0" and s[3]!="0") or (s[2]=="1" and int(s[3])<=2):
        print("AMBIGUOUS")
    else:
        print("MMYY")
elif (s[2]=="0" and s[3]!="0") or (s[2]=="1" and int(s[3])<=2):
    print("YYMM")
else:
    print("NA")

Solution (Python):
s=input()
a=int(s[:2])
b=int(s[2:])
l=list(range(1,13))
ans="NA"
if a not in l and b in l:
    ans="YYMM"
elif a in l and b not in l:
    ans="MMYY"
elif a in l and b in l:
    ans="AMBIGUOUS"
print(ans)

Solution (Python):










"""def kiri(n,m):
  r_ = n / m
  if (r_ - (n // m)) > 0:
    return (n//m) + 1
  else:
    return (n//m)"""
 
def main():
  S = input()
  A = int(S[0:2])
  B = int(S[2:4])
  if(1<=A<=12):
      if(1<=B<=12):
          print("AMBIGUOUS")
      else:
          print("MMYY")
  elif(1<=B<=12):
      print("YYMM")
  else:
      print("NA")
if __name__ == '__main__':
  main()

Solution (Python):
s = input()
F = 0 < int(s[:2]) < 13
S = 0 < int(s[2:]) < 13
print("AMBIGUOUS" if F*S else "YYMM" if S else "MMYY" if F else "NA")

Solution (Python):
s = input()

upper = int(s[:2])
lower = int(s[2:4])

if upper > 12:
    if lower > 12 or lower <= 0: print('NA')
    else: print('YYMM')
elif upper <= 0:
    if lower <= 12 and lower > 0: print('YYMM')
    else: print('NA')
else:
    if lower > 12: print('MMYY')
    elif lower <= 0: print('MMYY')
    else: print('AMBIGUOUS')

Solution (Python):
S = input()
if int(S[:2]) != 0 and int(S[:2]) <= 12:
  if int(S[2:]) != 0 and int(S[2:]) <= 12: print("AMBIGUOUS")
  else:print("MMYY")
else:
  if int(S[2:]) != 0 and int(S[2:]) <= 12: print("YYMM")
  else:print("NA")

Solution (Python):
S = input()
prefix_MM = False
surfix_MM = False
MM = ["01", "02", "03", "04", "05", "06", "07", "08", "09", "10", "11", "12"]
if S[0:2] in MM:
    prefix_MM = True
if S[2:4] in MM:
    surfix_MM = True

if prefix_MM and surfix_MM:
    print("AMBIGUOUS")
elif prefix_MM:
    print("MMYY")
elif surfix_MM:
    print("YYMM")
else:
    print("NA")

Solution (Python):
s=input()
s1=int(s[0:2])
s2=int(s[2:4])
if s1<=12 and s1>=1:
  print('AMBIGUOUS' if (s2<=12 and s2>=1) else 'MMYY')
else:
  print('YYMM' if (s2<=12 and s2>=1) else 'NA')

Solution (Python):
S = input()
upper = S[:2]
lower = S[2:]
months = ["0"+str(i) if i < 10 else str(i) for i in range(1, 13)]
is_yymm = lower in months
is_mmyy = upper in months

if is_yymm and is_mmyy:
    print("AMBIGUOUS")
elif is_yymm:
    print("YYMM")
elif is_mmyy:
    print("MMYY")
else:
    print("NA")

Solution (Python):
s = input()
a = int(s[0:2])
b = int(s[2:4])
if 1 <= a <= 12 and 1 <= b <= 12:
  print('AMBIGUOUS')
elif 1 <= a <= 12 and not 1 <= b <= 12:
  print('MMYY')
elif not 1 <= a <= 12 and 1 <= b <= 12:
  print('YYMM')
else:
  print('NA')

Solution (Python):
import sys
input = sys.stdin.readline

S = int(input())

s1 = S//100
s2 = S%100

yymm = 1<=s2<=12
mmyy = 1<=s1<=12

ans = ""
if yymm:
    if mmyy:
        ans = "AMBIGUOUS"
    else:
        ans = "YYMM"
else:
    if mmyy:
        ans = "MMYY"
    else:
        ans = "NA"

print(ans)

Solution (Python):
S=input()
a=int(S[:2:1])
b=int(S[2:4:1])
if a<=12 and a>=1 and (b<=12 and b>=1):
    print("AMBIGUOUS")
elif a<=12 and a>=1 and (b>12 or b<1):
    print("MMYY")
elif (a>12 or a<1) and (b<=12 and b>=1):
    print("YYMM")
elif (a>12 or a<1) and  (b>12 or b<1):
    print("NA")

Solution (Python):
s=input()
YYMM=MMYY=False
if s[:2]<="12" and s[:2]>="01":
    MMYY=True
if s[2:]<="12" and s[2:]>="01":
    YYMM=True
if YYMM and MMYY:
    print("AMBIGUOUS")
elif YYMM:
    print("YYMM")
elif MMYY:
    print("MMYY")
else:
    print("NA")

Solution (Python):
ex=["01","02","03","04","05","06","07","08","09","10","11","12"]
S=input()
if S[:2] in ex:
    if S[2:] in ex:
        print("AMBIGUOUS")
    else:
        print("MMYY")
else:
    if S[2:] in ex:
        print("YYMM")
    else:
        print("NA")

Solution (Python):
S = int(input())

f = S // 100
b = S % 100

if 1 <= f and f <= 12:
	if 1 <= b and b <= 12:
		print("AMBIGUOUS")
	else:
		print("MMYY")
else:
	if 1 <= b and b <= 12:
		print("YYMM")
	else:
		print("NA")

Solution (Python):
s = input()

a = int(s[:2])
b = int(s[2:])

if (a == 00 or a > 12) and b <= 12 and b >= 1:
  print("YYMM")
elif a <= 12 and a >= 1 and (b == 00 or b > 12):
  print("MMYY")
elif a <= 12 and a >= 1 and b <= 12 and b >= 1:
  print("AMBIGUOUS")
else:
  print("NA")

Solution (Python):
y=["01","02","03","04","05","06","07","08","09","10","11","12"]
s=input()
if s[:2] in y:
  if s[2:] in y:
    print("AMBIGUOUS")
  else:
    print("MMYY")
else:
  if s[2:] in y:
    print("YYMM")
  else:
    print("NA")

Solution (Python):
s = input()

s1 = int(s[:2])
s2 = int(s[2:])

yymm_flag = False
mmyy_flag = False

if 0 < s1 and s1 < 13:
    mmyy_flag = True
if 0 < s2 and s2 < 13:
    yymm_flag = True

if yymm_flag and mmyy_flag:
    print("AMBIGUOUS")
elif yymm_flag:
    print("YYMM")
elif mmyy_flag:
    print("MMYY")
else:
    print("NA")

Solution (Python):
s = input()
s1 = int(s[:2])
s2 = int(s[2:])
MMYY = False
YYMM = False
if 0<s1<13:
    MMYY = True
if 0<s2<13:
    YYMM = True
if MMYY and YYMM:
    print('AMBIGUOUS')
elif MMYY:
    print('MMYY')
elif YYMM:
    print('YYMM')
else:
    print('NA')

Solution (Python):
S = input()
A = int(S[0:2])
B = int(S[2:4])
if(1<=A<=12):
    if(1<=B<=12):
        print("AMBIGUOUS")
    else:
        print("MMYY")
elif(1<=B<=12):
    print("YYMM")
else:
    print("NA")

Solution (Python):
INT = lambda: int(input())
INTM = lambda: map(int,input().split())
STRM = lambda: map(str,input().split())
STR = lambda: str(input())
LIST = lambda: list(map(int,input().split()))
LISTS = lambda: list(map(str,input().split()))
def do():
    s=STR()
    s1=int(s[0:2])
    s2=int(s[2:4])
    flg0,flg1=0,0
    if s1==0 or s1>12:
        flg0=1
    if s2==0 or s2>12:
        flg1=1
    if flg0==1 and flg1==1:
        print('NA')
    elif flg0==0 and flg1==0:
        print('AMBIGUOUS')
    elif flg0==0 and flg1==1:
        print('MMYY')
    elif flg0==1 and flg1==0:
        print('YYMM')
    
if __name__ == '__main__':
    do()

Solution (Python):
s = input()

xx = int(s[0:2])
yy = int(s[2:4])

if 1 <= xx <= 12:
    if 1 <= yy <= 12:
        print("AMBIGUOUS")
    else:
        print("MMYY")

else:
    if 1 <= yy <= 12:
        print("YYMM")
    else:
        print("NA")

Solution (Python):
s = input()

xx = s[0] + s[1]
yy = s[2] + s[3]
xx = int(xx)
yy = int(yy)

if 1 <= xx <= 12:
    if yy >= 13 or yy == 0:
        print("MMYY")
    else:
        print("AMBIGUOUS")

if xx == 0 or 13 <= xx <= 99:
    if 1 <= yy <= 12:
        print("YYMM")
    else:
        print("NA")

Solution (Python):
s = int(input())
a = s //100
b = s - a * 100
if 1 <= a <= 12:
  if 1 <= b <= 12:
    print("AMBIGUOUS")
  else:
    print("MMYY")
else:
  if 1 <= b <= 12:
    print("YYMM")
  else:
    print("NA")

Solution (Python):
S = int(input())
A = 0
B = 0
ans = "NA"
if 0 < S//100 < 13 :
  A = 1

if 0 < S%100 < 13 :
  B = 1

if A == 1 and B == 1 :
  ans = "AMBIGUOUS"

elif A == 1 :
  ans = "MMYY"

elif B == 1:
  ans = "YYMM"

print(ans)

Solution (Python):
S=list(input())
F=int(''.join(S[0:2]))
B=int(''.join(S[2:4]))
if 0<F<13:
  if 0<B<13:
    ans='AMBIGUOUS'
  else:
    ans='MMYY'
else:
  if 0<B<13:
    ans='YYMM'
  else:
    ans='NA'
print(ans)

Solution (Python):
S=list(input())
F=int(''.join(S[0:2]))
B=int(''.join(S[2:4]))
if 0<F<13 and 0<B<13:
  ans='AMBIGUOUS'
elif F>12 and B>12:
  ans='NA'
elif F>12 and 0<B<13:
  ans='YYMM'
elif B>12 and 0<F<13:
  ans='MMYY'
elif F==0:
  if not 0<B<13:
    ans='NA'
  else:
    ans='YYMM'
elif B==0:
  if not 0<F<13:
    ans='NA'
  else:
    ans='MMYY'
print(ans)

Solution (Python):
S = input()
F = int(S[0] + S[1])
B = int(S[2] + S[3])
if min(F, B) > 12 or max(F, B) == 0 or min(F,B) == 0 and max(F, B) > 12:
  print('NA')
elif min(F, B) != 0 and max(F, B) <= 12:
  print('AMBIGUOUS')
elif F <= 12 and F != 0:
  print('MMYY')
else:
  print('YYMM')

Solution (Python):
s = input()
YYMM = False
MMYY = False

if 1 <= int(s[:2]) <= 12:
    MMYY = True
if 1 <= int(s[2:]) <= 12:
    YYMM = True

ans = ''
if YYMM and MMYY:
    ans = 'AMBIGUOUS'
elif YYMM:
    ans = 'YYMM'
elif MMYY:
    ans = 'MMYY'
else:
    ans = 'NA'

print(ans)

Solution (Python):
S = input()
a=int(S[:2])
b=int(S[2:])

if 1<=a<=12:
    if 1<=b<=12:
        print('AMBIGUOUS')
    else:
        print('MMYY')
else:
    if 1 <= b <= 12:
        print('YYMM')
    else:
        print('NA')

Solution (Python):

s = str(input())

mm_f = 0
mm_e = 0

if 0 < int(s[0:2]) <= 12:
    mm_f = 1
if 0 < int(s[2:]) <= 12:
    mm_e = 1

if mm_f == 1 and mm_e == 1:
    print('AMBIGUOUS')
elif mm_f == 1 and mm_e == 0:
    print('MMYY')
elif mm_f == 0 and mm_e == 1:
    print('YYMM')
else:
    print('NA')

Solution (Python):
s= str(input())
s1, s2, s3, s4 = [int(i) for i in s]
if (s1 == 0 and 1 <= s2 and s2 <= 9) or (s2 == 1 and 0 <= s2 and s2 <= 2):
    if (s3 == 0 and 1 <= s4 and s4 <= 9) or (s3 == 1 and 0 <= s4 and s4 <= 2):
        print("AMBIGUOUS")
    
    else:
        print("MMYY")
else:
    if (s3 == 0 and 1 <= s4 and s4 <= 9) or (s3 == 1 and 0 <= s4 and s4 <= 2):
        print("YYMM")
    else:
        print("NA")

Solution (Python):
S = list(input())

d = []
d.append(int(S[0]+S[1]))
d.append(int(S[2]+S[3]))

res = []
if(1<= d[0] <= 12):
    res.append('MMYY')
    
if(1<= d[1] <= 12):
    res.append('YYMM')
    
if(res == []):
    print('NA')
elif(len(res) == 1 and res[0] == 'MMYY'):
    print('MMYY')
elif(len(res) == 1 and res[0] == 'YYMM'):
    print('YYMM')
else:
    print('AMBIGUOUS')

Solution (Python):
s = input()

if 1<=int(s[:2])<=12 and 1<=int(s[2:])<=12:
  print('AMBIGUOUS')
elif 1<=int(s[:2])<=12 and (int(s[2:])>12 or int(s[2:])==0):
  print('MMYY')
elif (int(s[:2])>12 or int(s[:2])==0) and 1<=int(s[2:])<=12:
  print('YYMM')
else:
  print('NA')

Solution (Python):
S = input()
l = S[:2]
r = S[2:]
 
lcnt = 0
rcnt = 0
if 0 < int(l) <= 12:
    lcnt = 1
if  0 < int(r) <= 12:
    rcnt = 1
if lcnt and rcnt:
    print('AMBIGUOUS')
    exit()
elif lcnt:
    print('MMYY')
    exit()
elif rcnt:
    print('YYMM')
    exit()
else:
    print('NA')

Solution (Python):
S  = input()
if (int(S[:2]) == 0 or int(S[:2]) >= 13) and 1 <= int(S[2:]) <= 12:
    print('YYMM')
elif (int(S[2:]) == 0 or int(S[2:]) >= 13) and 1 <= int(S[:2]) <= 12 :
    print('MMYY')
elif 1 <= int(S[2:]) <= 12 and 1 <= int(S[:2]) <= 12:
    print('AMBIGUOUS')
else:
    print('NA')

Solution (Python):
def main():
    s = input()
    up = int(s[0:2])
    lo = int(s[-2:])
    if can_month(up):
        if can_month(lo):
            print('AMBIGUOUS')
        else:
            print('MMYY')

    else:
        if can_month(lo):
            print('YYMM')
        else:
            print('NA')


def can_month(v):
    if v > 0 and v <= 12:
        return True
    else:
        return False

if __name__ == '__main__':
    main()

Solution (Python):
s = int(input())
a = s//100
b = s%100
if 1<=a<=12 and 1<=b<=12:
    print("AMBIGUOUS")
elif 1<=a<=12:
    print("MMYY")
elif 1<=b<=12:
    print("YYMM")
else:
    print("NA")

Solution (Python):
s=input()
be=s[:2]
af=s[2:]

if s=="0000":
  print("NA")

elif int(be)<=12 and int(af)<=12 and be!="00" and af!="00":
  print("AMBIGUOUS")

elif int(af)<=12 and af!="00":
    print("YYMM")
    
elif int(be)<=12 and be!="00":
    print("MMYY")
  
else:
  print("NA")

Solution (Python):
S = list(map(int, input()))

if 0<S[0]*10+S[1]<=12 and 0<S[2]*10+S[3]<=12:
    print('AMBIGUOUS')
elif 0<S[0]*10+S[1]<=12:
    print('MMYY')
elif 0<S[2]*10+S[3]<=12:
    print('YYMM')
else:
    print('NA')

Solution (Python):
def solve():
    S = input()
    l = int(S[:2])
    r = int(S[2:])
    
    if 1 <= l <= 12:
        if 1 <= r <= 12:
            return 'AMBIGUOUS'
        else:
            return 'MMYY'
    else:
        if 1 <= r <= 12:
            return 'YYMM'
        else:
            return 'NA'

print(solve())

Solution (Python):

S = input()
l = S[:2]
r = S[2:]

lcnt = 0
rcnt = 0
if 0 < int(l) <= 12:
    lcnt = 1
if  0 < int(r) <= 12:
    rcnt = 1
if lcnt and rcnt:
    print('AMBIGUOUS')
    exit()
elif lcnt:
    print('MMYY')
    exit()
elif rcnt:
    print('YYMM')
    exit()
else:
    print('NA')

Solution (Python):
s = input()
head = int(s[:2])
tail = int(s[2:])


def is_only_year(a):
    return a == 0 or a > 12


def is_month(a):
    return 0 < a <= 12


if is_only_year(head) and is_month(tail):
    print("YYMM")
elif is_month(head) and is_only_year(tail):
    print("MMYY")
elif is_month(head) and is_month(tail):
    print("AMBIGUOUS")
else:
    print("NA")

Solution (Python):
def main():
    s = int(input())
    f = int(s/100)
    b = s%100
    
    if f > 0 and f <= 12:
        if b > 0 and b <= 12:
            print("AMBIGUOUS")
        else:
            print("MMYY")
    else:
        if b > 0 and b <= 12:
            print("YYMM")
        else:
            print("NA")

main()

Solution (Python):
s = input()
front = int(s[:2])
back = int(s[2:])
if 0 < front < 13 and 0 < back < 13:
    ans = 'AMBIGUOUS'
elif 0 < front < 13:
    ans = 'MMYY'
elif 0 < back < 13:
    ans = 'YYMM'
else:
    ans = 'NA'
print(ans)

Solution (Python):

s = input()
a=int(s[:2])
b=int(s[2:])

if 1<=a<=12:
  if 1<=b<=12:
    print("AMBIGUOUS")
  else:
    print("MMYY")
else:
  if 1<=b<=12:
    print("YYMM")
  else:
    print("NA")

Solution (Python):
import sys, re
from collections import deque, defaultdict, Counter
from math import ceil, sqrt, hypot, factorial, pi, sin, cos, radians
from itertools import accumulate, permutations, combinations, product
from operator import itemgetter, mul
from copy import deepcopy
from string import ascii_lowercase, ascii_uppercase, digits
from bisect import bisect, bisect_left
from fractions import gcd
from heapq import heappush, heappop
from functools import reduce
def input(): return sys.stdin.readline().strip()
def INT(): return int(input())
def MAP(): return map(int, input().split())
def LIST(): return list(map(int, input().split()))
sys.setrecursionlimit(10 ** 9)
INF = float('inf')
mod = 10 ** 9 + 7

S = input()

front = int(S[0:2])
rear = int(S[2:4])

if 1 <= front <= 12:
	if 1 <= rear <= 12:
		print("AMBIGUOUS")
	else:
		print("MMYY")
else:
	if 1 <= rear <= 12:
		print("YYMM")
	else:
		print("NA")

Solution (Python):
S=input()
a=int(S[0]+S[1])
b=int(S[2]+S[3])
if (a==0 or a>12) and 0<b<=12:
    print("YYMM")
elif 0<a<=12 and 0<b<=12:
    print("AMBIGUOUS")
elif 0<a<=12 and (b==0 or b>12):
    print("MMYY")
else:
    print("NA")

Solution (Python):
S = input()
F = int(S[0:2])
SE = int(S[2:4])


if F > 12 and 1 <= SE <= 12:
  print("YYMM")
elif 1 <= F <= 12 and SE > 12:
  print("MMYY")
elif 1 <= F <= 12 and 1 <= SE <= 12:
  print("AMBIGUOUS")
elif F == 0 and 1 <= SE <= 12:
  print("YYMM")
elif 1 <= F <= 12 and SE == 0:
  print("MMYY")
else:
  print("NA")

Solution (Python):












s = input()

up2 = int(s[:2])
end2 = int(s[2:])

if (0<up2<13) and (0<end2<13):
    ans = "AMBIGUOUS"
elif 0<up2<13:
    ans = "MMYY"
elif 0<end2<13:
    ans = "YYMM"
else:
    ans = "NA"

print(ans)

Solution (Python):
s = input()
a, b = int(s[:2]), int(s[2:])

if 0<a<13 and 0<b<13:
    ans = 'AMBIGUOUS'
elif 0<a<13 and (b>12 or b==0):
    ans = 'MMYY'
elif (a>12 or a==0) and 0<b<13:
    ans = 'YYMM'
else:
    ans = 'NA'

print(ans)

Solution (Python):
s=input()
print(['NA','YYMM','MMYY','AMBIGUOUS'][(0<int(s[:2])<13)*2+(0<int(s[2:])<13)])

Solution (Python):
import sys
from bisect import *
from heapq import *
from collections import *
from itertools import *
from functools import *
from math import *

sys.setrecursionlimit(100000000)
input = lambda: sys.stdin.readline().rstrip()

S = input()
x, y = int(S[:2]), int(S[2:])
yymm = 1 <= y <= 12
mmyy = 1 <= x <= 12
if yymm and mmyy:
    print('AMBIGUOUS')
elif yymm:
    print('YYMM')
elif mmyy:
    print('MMYY')
else:
    print('NA')

Solution (Python):
S=input()
s=int(S[:2])
t=int(S[2:])
if 1<=s<=12:
    if 1<=t<=12:
        print("AMBIGUOUS")
    else:
        print("MMYY")
else:
    if 1<=t<=12:
        print("YYMM")
    else:
        print("NA")

Solution (Python):
s = input()
s1 = int(s[0]+s[1])
s2 = int(s[2]+s[3])
if 1<=s1<=12 and 1<=s2<=12:
  print("AMBIGUOUS")
elif 0<=s1<=99 and 1<=s2<=12:
  print('YYMM')
elif 0<=s2<=99 and 1<=s1<=12:
  print('MMYY')
else:
  print('NA')

Solution (Python):
s = list(input())
ab = int(s[0]+s[1])
cd = int(s[2]+s[3])
ans = ""
if 1 <= ab <= 12 and (cd == 0 or 13 <= cd):
    ans = "MMYY"
elif 1 <= cd <= 12 and (ab == 0 or 13 <= ab):
    ans = "YYMM"
elif 1 <= ab <= 12 and 1 <= cd <= 12:
    ans = "AMBIGUOUS"
else:
    ans = "NA"
print(ans)

Solution (Python):
import sys
input=sys.stdin.readline

s=input()


if 0<int(s[:2])<13:
	upper=True
else:
	upper=False

if 0<int(s[2:])<13:
	low=True
else:
	low=False

if upper and low:
	print("AMBIGUOUS")

elif not upper and low:
	print("YYMM")

elif upper and not low:
	print("MMYY")
else:
	print("NA")

Solution (Python):
S = input()
f, r = int(S[:2]), int(S[2:])


if (f > 12 or f == 0) and 0 < r <= 12:
  ans = "YYMM"
elif 0 < f <= 12 and (r > 12 or r == 0):
  ans = "MMYY"
elif 0 < r <= 12 and 0 < f <= 12:
  ans = "AMBIGUOUS"

else:
  ans = "NA"
print(ans)

Solution (Python):
s = raw_input()

m = [i for i in xrange(1,13)]
y = [i for i in xrange(100)]
f2 = int(s[:2])
l2 = int(s[2:])
if (f2 in m and f2 in y) and (l2 in m and l2 in y):
    print "AMBIGUOUS"
elif f2 in m and l2 in y   :
    print "MMYY"
elif f2 in y and l2 in m:
    print "YYMM"
else:
    print "NA"

Solution (Python):
s=list(input())
u=[int(s[0]+s[1]),int(s[2]+s[3])]
if(0<u[0]<=12):
    m1=1
    if(0<u[1]<=12):                                                                                                                                                                                                    m2=1
    else:
        m2=0
else:
    m1=0
    if(0<u[1]<=12):
        m2=1
    else:
        m2=0
if(m1==1 and m2==0):
    print('MMYY')
elif(m1==1 and m2==1):
    print('AMBIGUOUS')
elif(m1==0 and m2==0):
    print('NA')
else:
    print('YYMM')

Solution (Python):
s=input()

fro=int(s[:2])
ba=int(s[2:])


if 1<=fro<=12:
    
    if 1<=ba<=12:
        print("AMBIGUOUS")
    
    else:
        print("MMYY")

else:
    
    if 1<=ba<=12:
        print("YYMM")
    
    else:
        print("NA")

Solution (Python):
def is_month( n :int ):
  return ( 1 <= n ) and ( n <= 12 )

def judge( first, second ):
  if (first and second):
    return "AMBIGUOUS"
  elif (first and not(second)):
    return "MMYY"
  elif (not( first ) and second):
    return "YYMM"
  else:
    return "NA"

s = input()
first = is_month( int( s[0:2] ))
second = is_month( int( s[2:4] ))
print( judge( first, second ) )

Solution (Python):
s=input()
a=(int(s[0])-0)*10+int(s[1])
b=(int(s[2])-0)*10+int(s[3])
if 1<=b<=12 and (12<a or a==0):
    print("YYMM")
elif 1<=a<=12 and (12<b or b==0):
    print("MMYY")
elif 1<=a<=12 and 1<=b<=12: 
    print("AMBIGUOUS")
else:
    print("NA")

Solution (Python):
s = input()
a = int(s[:2])
b = int(s[2:])

if a <= 12 and b <= 12:
    if a==0 and b!=0:
        print("YYMM")
    elif b==0 and a!=0:
        print("MMYY")
    elif a==0 and b==0:
        print("NA")
    else:
        print("AMBIGUOUS")
elif a<=12 and b>12:
    if a==0:
        print("NA")
    else:
        print("MMYY")
elif a>12 and b<=12:
    if b==0:
        print("NA")
    else:
        print("YYMM")
else:
    print("NA")

Solution (Python):
def main():
    str = input()
    YY = []
    MM = []
    YYMM_flg = False
    MMYY_flg = False
    AMB_flg = False
    NA_flg = False

    for i in range(2):
    	YY.append(str[i])

    for i in range(2, 4):
    	MM.append(str[i])

    yy = int(''.join(YY))
    mm = int(''.join(MM))

    if (yy >= 1 and yy <= 12) and (mm >= 1 and mm <= 12):
    	AMB_flg = True
    elif (mm >= 1 and mm <= 12) and (yy != 0 or mm != 0):
    	YYMM_flg = True
    elif (yy >= 1 and yy <= 12) and (yy != 0 or mm != 0):
    	MMYY_flg = True
    else:
    	NA_flg = True

    if AMB_flg:
    	print("AMBIGUOUS")
    elif YYMM_flg:
    	print("YYMM")
    elif MMYY_flg:
    	print("MMYY")
    elif NA_flg:
    	print("NA")


if __name__ == "__main__":
    main()

Solution (Python):
s = input()
l = int(s[:2])
r = int(s[2:])
ans = "NA"
if (1 <= l and l <= 12) and (1 <= r and r <= 12):
    ans = "AMBIGUOUS"
elif (1 <= l and l <= 12) and (r == 0 or r > 12):
    ans = "MMYY"
elif (1 <= r and r <= 12) and (l == 0 or l > 12):
    ans = "YYMM"
print(ans)

Solution (Python):
s = str(input())

if 1 <= int(s[:2]) <=12 and 1 <= int(s[2:]) <=12:
    print("AMBIGUOUS")
elif 1 <= int(s[2:]) <=12:
    print("YYMM")
elif 1 <= int(s[:2]) <=12:
    print("MMYY")
else:
    print("NA")

Solution (Python):
s = input()
ym = [s[i*2:i*2+2] for i in range(2)]

if 0 < int(ym[0]) and 0 < int(ym[1]) and int(ym[0]) < 13 and int(ym[1]) < 13:
  print("AMBIGUOUS")
elif 0 < int(ym[1]) and int(ym[1]) < 13:
  print("YYMM")
elif 0 < int(ym[0]) and int(ym[0]) < 13:
  print("MMYY")
else:
  print("NA")

Solution (Python):
s = input()

s1 = int(s[:2])
s2 = int(s[2:])

mm_flag = False
yy_flag = False

result = 'No'



if 12 >= s1 > 0:
    mm_flag = True
if 12 >= s2 > 0:
    yy_flag = True

if mm_flag and yy_flag:
    print('AMBIGUOUS')
elif mm_flag and not yy_flag:
    print('MMYY')
elif not mm_flag and yy_flag:
    print('YYMM')
else:
    print('NA')

Solution (Python):


s = input()

a = int(s[0])*10 + int(s[1])
b = int(s[2])*10 + int(s[3])

if 1<=a<=12 and 1<=b<=12:
    print('AMBIGUOUS')
elif 1<=a<=12:
    print('MMYY')
elif 1<=b<=12:
    print('YYMM')
else:
    print('NA')

Solution (Python):
S = input()
LL = int(S[0]+S[1])
RR = int(S[2]+S[3])

L = ""
if LL == 0 or LL > 12:
    L = "YY"
else:
    L = "YY or MM"

if L == "YY":
    if RR == 0 or RR > 12:
        print("NA")
    elif 1 <= RR <= 12:
        print("YYMM")
elif L == "YY or MM":
    if RR == 0 or RR > 12:
        print("MMYY")
    elif 1 <= RR <= 12:
        print("AMBIGUOUS")

Solution (Python):
y = str(input())
ans = ["NA","MMYY","YYMM","AMBIGUOUS"]
k = 0
if 1 <= int(y[:2]) <= 12:
  k += 1
if 1 <= int(y[2:]) <= 12:
  k += 2
print(ans[k])

Solution (Python):
A = str(input())
AC = list(A)
AB = int(A[0] + A[1])
AC = int(A[2] + A[3])

if 1 <= AB <= 12 and 1 <= AC <= 12:
    print("AMBIGUOUS")
elif 1 <= AB <= 12:
    print("MMYY")
elif 1 <= AC <= 12:
    print("YYMM")
else:
    print("NA")

Solution (Python):
S =list(input())

former = int(S[0])*10+int(S[1])
latter = int(S[2])*10+int(S[3])
former_YY=False
former_MM=False
latter_YY=False
latter_MM=False

if former <= 99:
    former_YY = True
    
if former <= 12 and former > 0:
    former_MM = True

if latter <= 99:
    latter_YY = True

if latter <= 12 and latter > 0:
    latter_MM = True

if former_YY and former_MM and latter_YY and latter_MM:
    print("AMBIGUOUS")
elif former_YY and latter_MM:
    print("YYMM")
elif former_MM and latter_YY:
    print("MMYY")
else:
    print("NA")

Solution (Python):
S = input()
s1 = int(S[:2])
s2 = int(S[2:])

if (s1 > 12):
    if (s2 > 12 or s2==0):
        print("NA")
    else:
        print("YYMM")
elif (s1 <= 12 and s1 > 0):
    if s2 > 12 or s2 == 0:
        print("MMYY")
    else:
        print("AMBIGUOUS")
elif s1 == 0:
    if s2 > 12 or s2 == 0:
        print("NA")
    else:
        print("YYMM")

Solution (Python):
import sys
import copy
import math
import fractions

import bisect
import pprint
import bisect
from functools import reduce
from copy import deepcopy
from collections import deque
import numpy as np
from decimal import *


if __name__ == '__main__':
    s = input()
    s1 = int(s[0:2])
    s2 = int(s[2:4])
    f1 = 0
    f2 = 0

    if s1 == 0:
        f1 = 0
    elif s1 >0 and 13 > s1:
        f1 = 1
    else:
        f1 =2

    if s2 == 0:
        f2 = 0
    elif s2 >0 and 13 > s2:
        f2 = 1
    else:
        f2 =2

    if f1 == 0 and f2 ==0:
        print("NA")
    elif (f1 ==0 and f2 == 2) or (f1 == 2 and f2 ==2) or (f1 == 2 and f2 ==0) :
        print("NA")
    elif (f1 ==0 and f2 == 1) or (f1 == 2 and f2 ==1) :
        print("YYMM")
    elif (f1 ==1 and f2 == 0) or (f1 == 1 and f2 ==2) :
        print("MMYY")
    else:
        print("AMBIGUOUS")

Solution (Python):
S = input()
s1 = int(S[:2])
s2 = int(S[2:])




if (s1 > 12):
    if (s2 > 12 or s2==0):
        print("NA")
    else:
        print("YYMM")
elif (s1 <= 12 and s1 > 0):
    if s2 > 12 or s2 == 0:
        print("MMYY")
    else:
        print("AMBIGUOUS")
elif s1 == 0:
    if s2 > 12 or s2 == 0:
        print("NA")
    else:
        print("YYMM")

Solution (Python):
s = list(map(int,list(input())))
a = s[0]*10+s[1]
b = s[2]*10+s[3]
lst = [1,2,3,4,5,6,7,8,9,10,11,12]
if a in lst:
    if b in lst:
        print('AMBIGUOUS')
    else:
        print('MMYY')
else:
    if b in lst:
        print('YYMM')
    else:
        print('NA')

Solution (Python):
s=input()
s1=int(s[0:2])
s2=int(s[2:4])
if (s1>=1 and s1<=12) and (s2>=1 and s2<=12):
    print("AMBIGUOUS")
elif (s1>=1 and s1<=12) or (s2>=1 and s2<=12):
    if (s1>=1 and s1<=12):
        print("MMYY")
    else:
        print("YYMM")

else:
    print("NA")

Solution (Python):
S = list(input())
is_yymm = False
is_mmyy = False
yymm_month = int(''.join(S[2:]))
mmyy_month = int(''.join(S[:2]))

if 1 <= yymm_month and yymm_month <= 12:
    is_yymm = True
if 1 <= mmyy_month and mmyy_month <= 12:
    is_mmyy = True

ans = 'NA'
if is_yymm and is_mmyy:
    ans = 'AMBIGUOUS'
elif is_yymm:
    ans = 'YYMM'
elif is_mmyy:
    ans = 'MMYY'

print(ans)

Solution (Python):
x=input()
a=x[:2]
b=x[2:]
ans_lst=[]
for y in [a,b]:
	if "00"<y<"13":
		ans_lst.append(True)
	else:ans_lst.append(False)
if all(ans_lst):
    print("AMBIGUOUS")
elif not any(ans_lst):
    print("NA")
elif ans_lst[0] and ans_lst[1]==False:
	print("MMYY")
elif ans_lst[0]==False and ans_lst[1]:
	print("YYMM")

Solution (Python):
s = input()
a = int(s[:2])
b = int(s[2:])


if 1<=a<=12 and 1<=b<=12:
  print('AMBIGUOUS')
elif 1<=a<=12:
  print('MMYY')
elif 1<=b<=12:
  print('YYMM')
else:
  print('NA')

Solution (Python):
s = int(input())
l = s / 100
r = s % 100

if(1 <= l and l <= 12):
    if(1 <= r and r <= 12):
        print('AMBIGUOUS')
    else:
        print('MMYY')
else:
    if(1 <= r and r <= 12):
        print('YYMM')
    else:
        print('NA')

Solution (Python):
s = list(input())
head = int(s[0] + s[1])
tail = int(s[2] + s[3])
 
if (0 < head < 13) and (0 < tail < 13):
    print('AMBIGUOUS')
elif 0 < tail < 13:
    print('YYMM')
elif 0 < head < 13:
    print('MMYY')
else:
    print('NA')

Solution (Python):
s = list(input())
head = int(s[0] + s[1])
tail = int(s[2] + s[3])

if (head == 0 or 12 < head < 100) and (0 < tail < 13):
    print('YYMM')
elif (0 < head < 13) and (tail == 0 or 12 < tail < 100):
    print('MMYY')
elif (0 < head < 13) and (0 < tail < 13):
    print('AMBIGUOUS')
else:
    print('NA')

Solution (Python):
x = list(input())

x12 = int(''.join(x[:2]))
x34 = int(''.join(x[2:]))

is_12YYMM = True
is_34YYMM = None
is_12MMYY = None
is_34MMYY = True

if (x12 > 12) or (x12 < 1):
  is_12MMYY = False
else:
  is_12MMYY = True

if (x34 > 12) or (x34 < 1):
  is_34YYMM = False
else:
  is_34YYMM = True

if (is_12YYMM and is_34YYMM) and (is_12MMYY and is_34MMYY):
  print('AMBIGUOUS')
elif (is_12YYMM and is_34YYMM):
  print('YYMM')
elif (is_12MMYY and is_34MMYY):
  print('MMYY')
else:
  print('NA')

Solution (Python):
S = input()

if 1 <= int(S[:2]) <= 12 and 1 <= int(S[2:]) <= 12:
    print("AMBIGUOUS")
elif int(S[:2]) >= 0 and 1 <= int(S[2:]) <= 12:
    print("YYMM")
elif int(S[2:]) >= 0 and 1 <= int(S[:2]) <= 12:
    print("MMYY")
else:
    print("NA")

Solution (Python):
s = input()
if (1 <= int(s[0:2]) and int(s[0:2]) <= 12) and (1 <= int(s[2:4]) and int(s[2:4]) <= 12):
    ans = "AMBIGUOUS"
elif (1 <= int(s[0:2]) and int(s[0:2]) <= 12) and (1 > int(s[2:4]) or int(s[2:4]) > 12):
    ans = "MMYY"
elif (1 > int(s[0:2]) or int(s[0:2]) > 12) and (1 <= int(s[2:4]) and int(s[2:4]) <= 12):
    ans = "YYMM"
else:
    ans = "NA"
print (ans)

Solution (Python):
S = input()
a = int(S[0])
b = int(S[1])
c = int(S[2])
d = int(S[3])

if a*10 + b == 0:
    if c*10 + d == 0:
        print("NA")
    elif c*10 + d <= 12:
        print("YYMM")
    else:
        print("NA")
elif a*10 + b <= 12:
    if c*10 + d == 0:
        print("MMYY")
    elif c*10 + d <= 12:
        print("AMBIGUOUS")
    else:
        print("MMYY")
else:
    if c*10 + d == 0:
        print("NA")
    elif c*10 + d <= 12:
        print("YYMM")
    else:
        print("NA")

Solution (Python):

s = input()
s1 = int(s[:2])
s2 = int(s[2:4])

if s1 == 0 and s2 == 0:
    print("NA")
    exit()

if (s1 >= 13 or s1 <= 0) and (s2 >= 13 or s2 <= 0):
    print("NA")
elif s1 <= 12 and s1 >= 1 and s2 <= 12 and s2 >= 1:
    print("AMBIGUOUS")
elif s2 >= 13 or s2 == 0:
    print("MMYY")
else:
    print("YYMM")

Solution (Python):
S = input()

if (1 <= int(S[:2]) <= 12) and (1 <= int(S[2:4]) <= 12):
    print('AMBIGUOUS')
elif (0 <= int(S[:2]) <= 99) and (1 <= int(S[2:4]) <= 12):
    print('YYMM')
elif (1 <= int(S[:2]) <= 12) and (0 <= int(S[2:4]) <= 99):
    print('MMYY')
else:
    print('NA')

Solution (Python):
s=input()
a=int(s[0:2])
b=int(s[2:4])
if 0<a<13 and 0<b<13:print("AMBIGUOUS")
elif not(0<a<13 or 0<b<13):print("NA")
elif 0<b<13:print("YYMM")
else:print("MMYY")

Solution (Python):
s = input()
a,b = int(s[:2]),int(s[2:])

c = 0
if 1 <= a <= 12:
    c += 1
if 1 <= b <= 12:
    c += 2

print(['NA', 'MMYY', 'YYMM', 'AMBIGUOUS'][c])

Solution (Python):
s=input()

s1=s[0]+s[1]
s2=s[2]+s[3]

if (s1[0]=='0' and s1!='00') or s1=='11' or s1=='12':
  ans1='MM'
else:
  ans1='YY'

if (s2[0]=='0' and s2!='00') or s2=='11' or s2=='12':
  ans2='MM'
else:
  ans2='YY'

if ans1==ans2=='MM':
  print('AMBIGUOUS')
elif ans1==ans2=='YY':
  print('NA')
else:
  print(ans1+ans2)