struct Solution;
impl Solution {
fn odd_cells(n: i32, m: i32, indices: Vec<Vec<i32>>) -> i32 {
let n = n as usize;
let m = m as usize;
let mut a = vec![vec![0; m]; n];
let mut res = 0;
for p in indices {
let r = p[0] as usize;
let c = p[1] as usize;
for j in 0..m {
a[r][j] += 1;
if a[r][j] % 2 == 1 {
res += 1;
} else {
res -= 1;
}
}
for i in 0..n {
a[i][c] += 1;
if a[i][c] % 2 == 1 {
res += 1;
} else {
res -= 1;
}
}
}
res
}
}
#[test]
fn test() {
let n = 3;
let m = 3;
let indices: Vec<Vec<i32>> = vec_vec_i32![[0, 1], [1, 1]];
assert_eq!(Solution::odd_cells(n, m, indices), 6);
let n = 2;
let m = 2;
let indices: Vec<Vec<i32>> = vec_vec_i32![[1, 1], [0, 0]];
assert_eq!(Solution::odd_cells(n, m, indices), 0);
}