# MatveyPanchenko DSAI-03
from copy import deepcopy

def rref(a, eps=1e-12):
    m, piv, r, c = deepcopy(a), [], 0, 0
    rows, cols = len(m), len(m[0])
    while r < rows and c < cols:
        k = max(range(r, rows), key=lambda i: abs(m[i][c]))
        if abs(m[k][c]) < eps:
            c += 1
            continue
        m[r], m[k] = m[k], m[r]
        piv.append(c)
        p = m[r][c]
        m[r] = [x / p for x in m[r]]
        for i in range(rows):
            if i != r:
                f = m[i][c]
                m[i] = [u - f * v for u, v in zip(m[i], m[r])]
        r += 1; c += 1
    return m, piv

t = lambda m: [list(r) for r in zip(*m)]

def col_space(a, piv): return [[row[j] for row in a] for j in piv]
def row_space(r): return [row for row in r if any(abs(x) > 1e-12 for x in row)]

def null_space(r, piv):
    n = len(r[0])
    free = [j for j in range(n) if j not in piv]
    basis = []
    for f in free:
        v = [0]*n; v[f] = 1
        for i, p in enumerate(piv):
            v[p] = -sum(r[i][k]*v[k] for k in range(n))
        basis.append(v)
    return basis

def subspaces(a):
    r1, p1 = rref(a)
    r2, p2 = rref(t(a))
    return (col_space(a, p1), row_space(r1),
            null_space(r1, p1), null_space(r2, p2))

read_mat = lambda: [list(map(float, input().split())) for _ in range(int(input("rows: ")))]
round_mat = lambda m, p=2: [[round(x, p) for x in row] for row in m]

if __name__ == "__main__":
    A = read_mat()
    cs, rs, ns, lns = (round_mat(s) for s in subspaces(A))
    print("Column Space:", cs)
    print("Row Space:", rs)
    print("Null Space:", ns)
    print("Left Null Space:", lns)