def max(input1,input2,input3):
    elements=input3
    matrix=[0]*input1
    maxrow=maxcolum=0
    maxcol=[0]*input2
    a=0
    b=input2
    for i in range(input1):
        matrix[i]=[*input3[a:b]]
        if sum(matrix[i])>maxrow:
            maxrow=sum(matrix[i])
        for j in range(input2):
            maxcol[j]+=matrix[i][j]

        a=b
        b+=b

    for i in range(len(maxcol)):
        if maxcol[i]>maxcolum:
            maxcolum=maxcol[i]

    return maxrow+maxcolum