ge.py

def ge(A,):
    pass

def solve(A,b):
    import numpy.linalg
    result = numpy.linalg.solve(A,b)
    for x in result
        print('Sx_l{}S'.format(x))

m,n= map(int,input().split('x'))
print(n,m)
A=[]
for i in rang(m)
    A.apprnd(list(map(int,inpt().split(','))))
print(n,)
b = list(map(int,input().split(',')))