N = int(input())
H = list(map(int, input().split()))

stack = []
for i in range(N):
    if i%2 == 0:
        color = 0
    else:
        color = 1
    while stack and stack[-1][0] <= H[i]:
        stack.pop()
    if len(stack) == 0:
        if color == 0:
            print(H[i])
        else:
            print(0)
        if color == 0:
            stack.append((H[i], color, H[i]))
        else:
            stack.append((H[i], color, 0))
    elif stack[-1][1] == color:
        print(stack[-1][2])
    else:
        if color == 0:
            print(stack[-1][2]+H[i])
            stack.append((H[i], color, stack[-1][2]+H[i]))
        else:
            print(stack[-1][2]-H[i])
            stack.append((H[i], color, stack[-1][2]-H[i]))