P21347 [CodeChef] MXEVNSUB
普及-
题目描述

Read problem statements in [Mandarin], [Bengali], [Russian], and [Vietnamese] as well.

You are given an integer N. Consider the sequence containing the integers $1, 2, \ldots, N$ in increasing order (each exactly once). Find the maximum length of its contiguous subsequence with an even sum.

------ Input Format ------

  • The first line of the input contains a single integer T denoting the number of test cases. The description of T test cases follows.
  • The first and only line of each test case contains a single integer N.

------ Output Format ------

For each test case, print a single line containing one integer --- the maximum length of a contiguous subsequence with even sum.

------ Constraints ------

$1 ≤ T ≤ 10^{4}$
$2 ≤ N ≤ 10^{4}$

------ subtasks ------

Subtask #1 (100 points): original constraints

----- Sample Input 1 ------
3
3
4
5
----- Sample Output 1 ------
3
4
4
----- explanation 1 ------
Example case 1: The optimal choice is to choose the entire sequence, since the sum of all its elements is $1 + 2 + 3 = 6$, which is even.

Example case 3: One of the optimal choices is to choose the subsequence $[1, 2, 3, 4]$, which has an even sum.

输入格式

见题面

输出格式

见题面

样例输入
3 3 4 5
样例输出
3 4 4