n = int(input())                 
                                 
k = 1                            
                                 
sankakus = set()                 
while True:                      
  sankaku = int( k*(k+1)/2 )     
  k += 1                         
  sankakus.add( sankaku )        
  #print(sankaku)                
  if sankaku > 10_000_000:       
    break                        
                                 
matchs = []                      
n2 = n                           
                                 
for k in range(10):              
  for i in range(0, -n2, -1):    
    m = n2 + i                   
    #print(m)                    
    if m in sankakus:            
      matchs.append(m)           
      n2 -= m                    
print(len(matchs))