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- All Contests
- ProjectEuler+
- Project Euler #18: Maximum path sum I

# Project Euler #18: Maximum path sum I

# Project Euler #18: Maximum path sum I

Contest ends in

_{This problem is a programming version of Problem 18 from projecteuler.net}

By starting at the top of the triangle below and moving to adjacent numbers on the row below, the maximum total from top to bottom is . The path is denoted by numbers in bold.

That is, .

Find the maximum total from top to bottom of the triangle given in input.

**Input Format**

First line contains , the number of testcases. For each testcase:

First line contains , the number of rows in the triangle.

For next lines, 'th line contains numbers.

**Constraints**

**Output Format**

For each testcase, print the required answer in a newline.

**Sample Input**

```
1
4
3
7 4
2 4 6
8 5 9 3
```

**Sample Output**

```
23
```

**Explanation**

As shown in statement.