n = int(input())
lst = list(map(int, input().split()))
res = False
count = 0
for i in range(len(lst)):
    if lst[i] > 0:
        count+=1
        if str(lst[i]) == str(lst[i])[::-1]:
            res = True
            
if count== len(lst) and res:
    print("True")
else:
    print("False")