字节跳动 - 2048（AC 90%）
# l = [[0, 0, 0, 2], [0, 0, 0, 2], [0, 0, 4, 8], [0 ,0, 4, 8]]
com = int(input())
l=[]
for _ in range(4):
l.append(list(map(int,input().split())))
if com == 1:
for i in range(3, 0, -1):
for j in range(4):
if l[i-1][j] == l[i][j]:
l[i][j] = 0
l[i-1][j] *= 2
for k in range(3, 0, -1):
if l[k-1][j] == 0 and l[k][j] != 0:
l[k-1][j] = l[k][j]
l[k][j] = 0
if l[k-1][j] == l[k][j]:
l[k-1][j] *= 2
l[k][j] = 0
elif com == 2:
for i in range(0, 3, 1):
print(i)
for j in range(4):
if l[i + 1][j] == l[i][j]:
l[i][j] = 0
l[i + 1][j] *= 2
for k in range(0, 3, 1):
if l[k + 1][j] == 0 and l[k][j] != 0:
l[k + 1][j] = l[k][j]
l[k][j] = 0
if l[k + 1][j] == l[k][j]:
l[k + 1][j] *= 2
l[k][j] = 0
elif com == 3:
for i in range(4):
print(i)
for j in range(3, 0, -1):
if l[i][j - 1] == l[i][j]:
l[i][j] = 0
l[i][j - 1] *= 2
for k in range(3, 0, -1):
if l[i][k - 1] == 0 and l[i][k] != 0:
l[i][k - 1] = l[i][k]
l[i][k] = 0
if l[i][k - 1] == l[i][k]:
l[i][k - 1] *= 2
l[i][k] = 0
elif com == 4:
for i in range(4):
print(i)
for j in range(0, 3, 1):
if l[i][j + 1] == l[i][j]:
l[i][j] = 0
l[i][j + 1] *= 2
for k in range(0, 3, 1):
if l[i][k + 1] == 0 and l[i][k] != 0:
l[i][k + 1] = l[i][k]
l[i][k] = 0
if l[i][k + 1] == l[i][k]:
l[i][k + 1] *= 2
l[i][k] = 0
for i in range(4):
print(" ".join(map(str, l[i]))) 剩下的10%找不到样例了，有看出来的请告知呀！
#字节跳动##笔试题目#
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