1672. Richest Customer Wealth

https://leetcode.com/problems/richest-customer-wealth

Description

You are given an m x n integer grid accounts where accounts[i][j] is the amount of money the i​​​​​​​​​​​th​​​​ customer has in the j​​​​​​​​​​​th​​​​ bank. Return the wealth that the richest customer has.

A customer's wealth is the amount of money they have in all their bank accounts. The richest customer is the customer that has the maximum wealth.

Example 1:

**Input:** accounts = [[1,2,3],[3,2,1]]
**Output:** 6
**Explanation****:**
1st customer has wealth = 1 + 2 + 3 = 6
2nd customer has wealth = 3 + 2 + 1 = 6
Both customers are considered the richest with a wealth of 6 each, so return 6.

Example 2:

**Input:** accounts = [[1,5],[7,3],[3,5]]
**Output:** 10
**Explanation**: 
1st customer has wealth = 6
2nd customer has wealth = 10 
3rd customer has wealth = 8
The 2nd customer is the richest with a wealth of 10.

Example 3:

**Input:** accounts = [[2,8,7],[7,1,3],[1,9,5]]
**Output:** 17

Constraints:

• m == accounts.length

• n == accounts[i].length

• 1 <= m, n <= 50

• 1 <= accounts[i][j] <= 100

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