题解 | #在行列都排好序的矩阵中找指定的数#
在行列都排好序的矩阵中找指定的数
http://www.nowcoder.com/practice/b929be9dbbaa489a91afa3fec195c228
n, m, k = list(map(int, input().split()))
matrix = []
for i in range(n):
matrix.append(list(map(int, input().split())))
i, j = n - 1, 0
while n > i >= 0 and 0 <= j < m:
if matrix[i][j] == k:
print("Yes")
exit()
if matrix[i][j] > k:
i -= 1
else:
j += 1
print("No")
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