2566번 - 행렬 내의 최댓값
import sys
n = 9
m = -1
r = 0
c = 0
mat = []
for i in range(n):
row = list(map(int,sys.stdin.readline().split()))
mat.append(row)
for i in range(n):
for j in range(n):
if mat[i][j] > m:
m = mat[i][j]
r = i + 1
c = j + 1
print(m)
print(r, c)