from typing import List


def yuki1060(grid: List[List[int]]) -> int:
    ROW, COL = len(grid), len(grid[0])
    colSum = [0] * COL
    for i in range(ROW):
        for j in range(COL):
            colSum[j] += grid[i][j]
    rowPrice = [0] * ROW
    for i in range(ROW):
        for j in range(COL):
            rowPrice[i] += grid[i][j] * colSum[j]
    rowPrice.sort(reverse=True)
    res1 = sum(rowPrice[::2])
    res2 = sum(rowPrice[1::2])
    return res1 - res2


if __name__ == "__main__":
    n, m = map(int, input().split())
    grid = [list(map(int, input().split())) for _ in range(n)]
    print(yuki1060(grid))