import random

n,m = map(int,input().split())
A = [list(map(int,input().split())) for i in range(n)]

for i in range(n):
    r = 0
    c = 0
    for j in range(n):
        r += A[i][j]
        c += A[j][i]
    if r != m or c != m:
        print(-1)
        exit()


ans = []
for _ in range(m):
    l = [0]*n

    H = [0]*n
    W = [0]*n
    for i in range(n):
        ma = 0
        for h in range(n):
            for w in range(n):
                if H[h] or W[w]:
                    continue
                ma = max(ma,A[h][w])
        
        cands = []
        
        for h in range(n):
            for w in range(n):
                if H[h] or W[w]:
                    continue
                if A[h][w] == ma:
                    cands.append([h,w])

        assert ma > 0
        rind = random.randint(0,len(cands)-1)
        h,w = cands[rind]
        A[h][w] -= 1
        H[h] = 1
        W[w] = 1
        l[h] = w+1
    ans.append(l)


for i in ans:
    print(*i)