N, K = map(int, input().split())
D = []
for i in range(N):
    S = input()
    L = []
    for j in range(N):
        L.append(int(S[j]))
    D.append(L)

L = []
for i in range(N):
    for j in range(N):
        L.append((abs(i - N // 2) + abs(j - N // 2), i, j))
L.sort()
Ans = []
for d, i, j in L:
    if(D[i][j] == 9):
        Ans.append((i, j))
    if(len(Ans) == K):
        break
print(len(Ans))
for (i, j) in Ans:
    print(i, j)