20240327

# a,b = map(int, input().split())
# print(bool(a) or bool(b))

# a,b = map(int, input().split())

# if a != b:
#     print(True)
# else:
#     print(False)

# a,b = map(int, input().split())
# print(a == b)

# a,b = map(int, input().split())
# c = bool(a)
# d = bool(b)
# print((not c) and (not d))

# a,b = map(int, input().split())
# print(a if(a>b) else b)

# a,b,c = map(int, input().split())
# d = (a if(a<b) else b)
# print( d if(d<c) else c)

# a,b,c = map(int, input().split())
# if a % 2 == 0: print(a)
# if b % 2 == 0: print(b)
# if c % 2 == 0: print(c)

# a,b,c = map(int, input().split())
# if a % 2 == 0: print('even')
# else: print('odd')
# if b % 2 == 0: print('even')
# else: print('odd')
# if c % 2 == 0: print('even')
# else: print('odd')

# a = int(input())
# if a < 0 and a % 2 == 0: print('A')
# elif a < 0 and a % 2 != 0: print('B')
# elif a > 0 and a % 2 == 0: print('C')
# elif a > 0 and a % 2 != 0: print('D')

# a = int(input())
# if a >= 90: print('A')
# elif a >= 70: print('B')
# elif a >= 49 and a <= 69: print('C')
# else: print('D')

# a = input()
# if a == 'A': print('best!!!')
# elif a == 'B': print('good!!')
# elif a == 'C': print('run!')
# elif a == 'D': print('slowly~')
# else: print('what?')

# a = int(input())
# if a == 12 or a == 1 or a == 2: print('winter')
# elif a // 3 == 1: print('spring')
# elif a == 6 or a == 7 or a == 8: print('summer')
# else: print('fall')


# n=10
# # i : 0 ~ n-1
# for i in range(n) : 
#     print(i,end=' ')
# print()

# a=10
# b=16
# # i : a ~ b-1
# for i in range(a,b) : 
#     print(i,end=' ')
# print()

# # range(시작값, 종료값+1,간격)
# for i in range(b,a,-1) : 
#     if i%2==0 : 
#         print(i,end=' ')
# print() 


# while True : 
#     print('*')
#     if 어쩌구 : 
#         break

# 리스트 -> 고무고무 배열 

# list = []

# list.append(5)

# list.append('hello')

# list.append([10,11])

# print(list)

# 리스트 초기화
# list  = [0 for i in range(길이)]
# list = [i for i in range(10)]
# print(list)

# list.pop()
# print(list)

# print(list.pop())
# print(list)

# list.reverse()
# print(list)

# list.sort()
# print(list)

# print(max(list))
# print(min(list))

# print(list[0:3])

# a = list[1:4]
# print(a)

# print(list[-1]) # list[len(list)-1]

# print(len(list))

# print(list[2:]) # list[2] ~ list마지막까지

# print(list+a) #리스트끼리 합치기

# print(list*3) #리스트 3배하기

# print('--------------------')
# print(list)
# del list[2]
# print(list)

# # del list[3:]
# # print(list)
# list.append(3)
# list.append(5)
# print(list.index(5)) # list에서 5가 있는 곳의 맨 처음위치를 리턴해줘

# list.insert(0,500)
# print(list)


# push = append
# pop = pop
# insert(위치,값)
# del list[위치]

# list.insert(2,600)
# print(list)

# list.remove(600)
# print(list)

# print(list.count(3))

# while True:
#     a = int(input())
#     if a == 0: break;
#     else: print(a)

# a = int(input())
# for i in range(a, 0, -1):
#     print(i)

# a = int(input())
# for i in range(a - 1, -1, -1):
#     print(i)

# a = input()
# b = ord(a)
# for i in range(ord('a'), b + 1):
#     print(chr(i))

# a = int(input())
# for i in range(0, a + 1):
#     print(i)

# a = int(input())
# for i in range(0, a + 1):
#     print(i)

# a = int(input())
# sum = int(0)
# for i in range(1, a + 1):
#     if (i % 2 == 0): sum += i
# print(sum)

# while True:
#     a = input()
#     if a == 'q': 
#         print(a)
#         break
#     else: print(a)

# a = int(input())
# i = int(1)
# sum = int(0)
# while True:
#     if (sum + i) >= a:
#         print(i)
#         break
#     sum += i
#     i += 1

# a,b = map(int, input().split())
# for i in range(1, a + 1, 1):
#     for j in range(1, b + 1, 1):
#         print(i,j)

a = input()
a = int(a,16)
+