str = input()
str = str.lower()
if('a' in str and 't' in str and 'y' in str and 'p' in str and 'i' in str and 'c' in str and 'l' in str):
    if(str.count('a')>1):
         print("YES")
    else:
        print("NO")    
else:
    print("NO")