Range Addition II
You are given an m x n matrix M initialized with all 0s and an array of operations ops, where ops[i] = [ai, bi] means M[x][y] should be incremented by one for all 0 <= x < ai and 0 <= y < bi.
Count and return the number of maximum integers in the matrix after performing all the operations.
Example 1
Input
m = 3, n = 3, ops = [[2,2],[3,3]]Output
4The maximum integer in
M is 2, and there are four of it in M, so return 4.Example 2
Input
m = 3, n = 3, ops = [[2,2],[3,3],[3,3],[3,3],[2,2],[3,3],[3,3],[3,3],[2,2],[3,3],[3,3],[3,3]]Output
4The cells in the top-left
2 x 2 area are included in every smallest overlapping operation range, so there are 4 maximum integers.Constraints
- 1 <= m, n <= 4 * 10^4
- 0 <= ops.length <= 10^4
- ops[i].length == 2
- 1 <= ai <= m
- 1 <= bi <= n