with open("24-181.txt") as f: 
 	 
 	for line in f: 
 		 
 		if line[-1] == "\n": line = line[ : -1] 
 		 
 		st = 456750 
 		end = 456960 
 		ss = line[st + 1 : end - 1] 
 		 
 		print(len(ss), ss.count("."), "Y" in ss) # 208 5 False

 
  
 f=open("24-181.txt") 
 s=f.readline() 
 s=s.split('Y') 
  
 ss=[p for p in s if p.count('.')<=5] 
  
  
 print(len(max(ss,key=len))) 
 

 
 f=open("24-181.txt") 
 s=f.readline() 
 ss='' 
 k=0 
 SS=[] 
 for i in range(len(s)): 
  
     if s[ i]=='Y': ss,k='',0 
     else: 
         if s[ i]!='.': 
             ss=ss+s[ i] 
         elif s[ i]=='.': 
             k+=1 
             if k<=5: 
                 ss = ss + s[ i] 
             if k>5: 
                 ss, k = '', 0 
     SS.append(ss) 
 #print(SS) 
 print(len(max(SS,key=len)))