641 B | 641 chars
import sys
from math import sqrt, pi, sin, factorial
inp = lambda : sys.stdin.readline()[:-1].strip()
mii = lambda x = " " : [*map(int,inp().split(x))]
mfi = lambda x = " " : [*map(float,inp().split(x))]
ii = lambda : int(inp())
fi = lambda : float(inp())
p = print
def solve():
r, c = mii()
l = [mii() for _ in range(r)]
ans = 111111111111111111111111
for i in range(r):
for j in range(c):
k = 0
for y in range(r):
for x in range(c):
k += (abs(i - y) + abs(j - x)) * l[y][x]
ans = min(ans, k)
print(ans)
if __name__ == "__main__":
tc = 1
for t in range(1, tc+1):
solve()