# -*- coding: utf-8 -*-

N, V, Ox, Oy = map(int, raw_input().split())
assert 2 <= N <= 200
assert 1 <= V <= 500
assert (Ox == 0 and Oy == 0) or (1 <= Ox <= N and 1 <= Oy <= N)
for _ in xrange(N):
    C = map(int, raw_input().split())
    assert len(C) == N
    for i in C:
        assert 0 <= i <= 9