2022-01-31 Daily-Challenge

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In: DailyChallenge

Today I have done leetcode's January LeetCoding Challenge with cpp.

January LeetCoding Challenge 31

Description

Richest Customer Wealth

You are given an m x n integer grid accounts where accounts[i][j] is the amount of money the ith customer has in the jth 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

Solution

auto speedup = [](){
  cin.tie(nullptr);
  cout.tie(nullptr);
  ios::sync_with_stdio(false);
  return 0;
}();
class Solution {
public:
  int maximumWealth(vector<vector<int>>& accounts) {
    int answer = 0;
    for(auto &account : accounts) {
      answer = max(answer, accumulate(account.begin(), account.end(), 0));
    }
    return answer;
  }
};

// Accepted
// 34/34 cases passed (4 ms)
// Your runtime beats 90.57 % of cpp submissions
// Your memory usage beats 49.93 % of cpp submissions (7.9 MB)
Algorithm