Equal Sum Grid Partition I

/**
 * @param {number[][]} grid
 * @return {boolean}
 */
var canPartitionGrid = function(grid) {
    const m = grid.length;
    const n = grid[0].length;

    let total = 0;

    for (let row = 0; row < m; row++) {
        for (let col = 0; col < n; col++) {
            total += grid[row][col];
        }
    }

    if (total & 1) {
        return false;
    }

    const target = total / 2;

    let sum = 0;
    for (let row = 0; row < m - 1; row++) {
        for (let col = 0; col < n; col++) {
            sum += grid[row][col];
        }

        if (sum === target) {
            return true;
        }
    }

    sum = 0;
    for (let col = 0; col < n - 1; col++) {
        for (let row = 0; row < m; row++) {
            sum += grid[row][col];
        }

        if (sum === target) {
            return true;
        }
    }

    return false;
};