Preparando MOJI
Alicia has an array, $$$a_1, a_2, \ldots, a_n$$$, of non-negative integers. For each $$$1 \leq i \leq n$$$, she has found a non-negative integer $$$x_i = max(0, a_1, \ldots, a_{i-1})$$$. Note that for $$$i=1$$$, $$$x_i = 0$$$.
For example, if Alicia had the array $$$a = \{0, 1, 2, 0, 3\}$$$, then $$$x = \{0, 0, 1, 2, 2\}$$$.
Then, she calculated an array, $$$b_1, b_2, \ldots, b_n$$$: $$$b_i = a_i - x_i$$$.
For example, if Alicia had the array $$$a = \{0, 1, 2, 0, 3\}$$$, $$$b = \{0-0, 1-0, 2-1, 0-2, 3-2\} = \{0, 1, 1, -2, 1\}$$$.
Alicia gives you the values $$$b_1, b_2, \ldots, b_n$$$ and asks you to restore the values $$$a_1, a_2, \ldots, a_n$$$. Can you help her solve the problem?
The first line contains one integer $$$n$$$ ($$$3 \leq n \leq 200\,000$$$) – the number of elements in Alicia's array.
The next line contains $$$n$$$ integers, $$$b_1, b_2, \ldots, b_n$$$ ($$$-10^9 \leq b_i \leq 10^9$$$).
It is guaranteed that for the given array $$$b$$$ there is a solution $$$a_1, a_2, \ldots, a_n$$$, for all elements of which the following is true: $$$0 \leq a_i \leq 10^9$$$.
Print $$$n$$$ integers, $$$a_1, a_2, \ldots, a_n$$$ ($$$0 \leq a_i \leq 10^9$$$), such that if you calculate $$$x$$$ according to the statement, $$$b_1$$$ will be equal to $$$a_1 - x_1$$$, $$$b_2$$$ will be equal to $$$a_2 - x_2$$$, ..., and $$$b_n$$$ will be equal to $$$a_n - x_n$$$.
It is guaranteed that there exists at least one solution for the given tests. It can be shown that the solution is unique.
5 0 1 1 -2 1
0 1 2 0 3
3 1000 999999000 -1000000000
1000 1000000000 0
5 2 1 2 2 3
2 3 5 7 10
The first test was described in the problem statement.
In the second test, if Alicia had an array $$$a = \{1000, 1000000000, 0\}$$$, then $$$x = \{0, 1000, 1000000000\}$$$ and $$$b = \{1000-0, 1000000000-1000, 0-1000000000\} = \{1000, 999999000, -1000000000\}$$$.
Informação
Provedor Codeforces
Código CF1326B
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Datas 09/05/2023 10:00:19
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