a = input().split()
len_a = len(a) - 1
for index, number in enumerate(a):
   if len_a == 0:
      print (number)
   else:
      if index == 0:
         S = int(a[-1]) + int(a[1])
         b = str(S)
      elif index != 0 and index != int(len_a) :
         n_index_0 = int(int(a.index(number)) + 1)
         n_index_2 = int(int(a.index(number)) - 1)
         n_0 = a[n_index_0]
         N_2 = a[n_index_2]
         S1 = int(n_0) + int(N_2)
         b += " " + str(S1)
      elif index == int(len_a):
         S2 = int(a[0]) + int(a[-2])
         b += " " + str(S2)
         print (b)
x = [int(m) for m in str(b)]
print (x) 
# print (" ".join(b))