CF1843B.Long Long
普及/提高-
通过率:0%
AC君温馨提醒
该题目为【codeforces】题库的题目,您提交的代码将被提交至codeforces进行远程评测,并由ACGO抓取测评结果后进行展示。由于远程测评的测评机由其他平台提供,我们无法保证该服务的稳定性,若提交后无反应,请等待一段时间后再进行重试。
题目描述
Today Alex was brought array a1,a2,…,an of length n . He can apply as many operations as he wants (including zero operations) to change the array elements.
In 1 operation Alex can choose any l and r such that 1≤l≤r≤n , and multiply all elements of the array from l to r inclusive by −1 . In other words, Alex can replace the subarray [al,al+1,…,ar] by [−al,−al+1,…,−ar] in 1 operation.
For example, let n=5 , the array is [1,−2,0,3,−1] , l=2 and r=4 , then after the operation the array will be [1,2,0,−3,−1] .
Alex is late for school, so you should help him find the maximum possible sum of numbers in the array, which can be obtained by making any number of operations, as well as the minimum number of operations that must be done for this.
输入格式
The first line contains a single integer t ( 1≤t≤104 ) — number of test cases. Then the descriptions of the test cases follow.
The first line of each test case contains one integer n ( 1≤n≤2⋅105 ) — length of the array.
The second line contains n integers a1,a2,…,an ( −109≤ai≤109 ) — elements of the array.
It is guaranteed that the sum of n for all test cases does not exceed 2⋅105 .
输出格式
For each test case output two space-separated numbers: the maximum possible sum of numbers in the array and the minimum number of operations to get this sum.
Pay attention that an answer may not fit in a standard integer type, so do not forget to use 64-bit integer type.
输入输出样例
输入#1
5 6 -1 7 -4 -2 5 -8 8 -1 0 0 -2 1 0 -3 0 5 2 -1 0 -3 -7 5 0 -17 0 1 0 4 -1 0 -2 -1
输出#1
27 3 7 2 13 1 18 1 4 1
说明/提示
Below, for each test case, only one of the possible shortest sequences of operations is provided among many. There are others that have the same length and lead to the maximum sum of elements.
In the first test case, Alex can make operations: (1,4) , (2,2) , (6,6) .
In the second test case, to get the largest sum you need to make operations: (1,8) , (5,6) .
In the fourth test case, it is necessary to make only one operation: (2,3) .