from collections import defaultdict

H,W = map(int, input().split())
A = [list(map(int,input().split())) for _ in range(H)]

res = 0
for i in range(H):
    d = defaultdict(list)
    for j in range(W):
        if A[i][j]!=0:
            d[A[i][j]].append(j)
    for key in d.keys():
        if len(d[key])>1:
            res += 1
            for x in d[key]:
                A[i][x] = 0

for i in range(W):
    d = defaultdict(list)
    for j in range(H):
        if A[j][i]!=0:
            d[A[j][i]].append(j)
    for key in d.keys():
        if len(d[key])>1:
            res += 1
            for y in d[key]:
                A[y][i] = 0

for i in range(H):
    res += W-A[i].count(0)
print(res)