# ver 1/ вариант решения 1
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)
 

# ver 2/ вариант решения 2 -короче
initial_list = input().split()
sum_list = []
left_index = -1
right_index = -len(initial_list) + 1
middle_index = 0
while middle_index < len(initial_list):
    sum_list.append(initial_list[left_index] + initial_list[right_index])
    left_index += 1
    right_index += 1
    middle_index += 1
print(sum_list)
      
# ver 3/ вариант решения 3
a = [int(item) for item in input().split()]
a2 = []
for i in range(len(a)):
    if len(a) == 1:
        print(a[0])
        break
    else:
        if i == 0:
            a2.append(a[-1] + a[i + 1])
        elif i > 0  and i != len(a) - 1:
            a2.append(a[i - 1] + a[i + 1])
        else:
            a2.append(a[i - 1] + a[0])
if a2 != 0:
    for i in a2:
        print(i, end=' ')