ABC107 B - Grid Compression

ABC107 B - Grid Compression

H, W = list(map(int, input().split()))

A = []
for h in range(H):
    a = list(input())
    A.append(a)

row = [False] * H
col = [False] * W

for i in range(H):
    for j in range(W):
        if A[i][j] == "#":
            row[i] = True
            col[j] = True

for h in range(H):
    if row[h]:
        for w in range(W):
            if col[w]:
                print(A[h][w], end="")
        print()