598. Range Addition II
You are given an m x n matrix M initialized with all 0's 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: 4 Explanation: The 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: 4
Example 3:
Input: m = 3, n = 3, ops = [] Output: 9
Constraints:
1 <= m, n <= 4 * 1041 <= ops.length <= 104ops[i].length == 21 <= ai <= m1 <= bi <= n
Rust Solution
struct Solution;
impl Solution {
fn max_count(mut m: i32, mut n: i32, ops: Vec<Vec<i32>>) -> i32 {
for op in ops {
m = i32::min(op[0], m);
n = i32::min(op[1], n);
}
m * n
}
}
#[test]
fn test() {
let m = 3;
let n = 3;
let ops: Vec<Vec<i32>> = vec_vec_i32![[2, 2], [3, 3]];
let res = 4;
assert_eq!(Solution::max_count(m, n, ops), res);
}
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