#include<bits/stdc++.h>
#define god dimasi5eks
#pragma GCC optimize("O3")
#define fi first
#define se second
#define pb push_back
#define pf push_front
#define mod 1000000007
#define dancila 3.14159265359
#define eps 1e-9
// #define fisier 1
using namespace std;
typedef long long ll;
int n, m, sum[3002][3002], sum2[3002][3002];
char mat[3002][3002];
int ox[] = {-1, 0, 1, 0};
int oy[] = {0, 1, 0, -1};
int cum[3002];
int dp[3002][3002], sp[3002][3002];
int cost(int a, int b)
{
return sp[a][b];
}
void divide(int st, int dr, int optst, int optdr, int pz)
{
if(st > dr || optst > optdr)
return;
int mid = (st + dr) / 2;
int wht = 0;
for(int i = min(mid, optst); i <= min(mid, optdr); ++i)
if(dp[pz-1][i] + cum[mid] - cost(i, mid) > dp[pz][mid])
{
dp[pz][mid] = dp[pz-1][i] + cum[mid] - cost(i, mid);
wht = i;
}
divide(st, mid-1, optst, wht, pz);
divide(mid+1, dr, wht, optdr, pz);
}
int main()
{
#ifdef fisier
ifstream f("input.in");
ofstream g("output.out");
#endif
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cin >> n >> m;
for(int i = 1; i <= n; ++i)
cin >> (mat[i] + 1);
int acm = 0;
for(int i = 1; i <= n; ++i)
for(int j = 1; j <= m; ++j)
if(mat[i][j] >= '0' && mat[i][j] <= '9')
{
int L = j, R = j;
int tot = (mat[i][j] - '0');
deque<pair<int, int> > d;
d.pb({i, j});
mat[i][j] = '.';
while(!d.empty())
{
pair<int, int> nod = d[0];
L = min(L, nod.se);
R = max(R, nod.se);
d.pop_front();
for(int x = 0; x <= 3; ++x)
{
int new_x = nod.fi + ox[x];
int new_y = nod.se + oy[x];
if(new_x == 0 || new_y == 0 || new_x == n+1 || new_y == m+1)
continue;
if(mat[new_x][new_y] == '.')
continue;
tot += (mat[new_x][new_y] - '0');
mat[new_x][new_y] = '.';
d.pb({new_x, new_y});
}
}
sum[L][R] += tot;
acm += tot;
}
for(int i = 1; i <= m; ++i)
for(int j = i; j <= m; ++j)
cum[i] += sum[i][j], cum[j+1] -= sum[i][j];
for(int i = 1; i <= m; ++i)
for(int j = m; j >= 1; --j)
sum2[i][j] = sum[i][j] + sum2[i][j+1];
for(int i = 1; i <= m; ++i)
for(int j = m; j >= 1; --j)
sp[i][j] = sum2[i][j] + sp[i-1][j];
for(int i = 1; i <= m; ++i)
{
cum[i] += cum[i-1];
dp[1][i] = cum[i];
}
for(int i = 2; i <= m; ++i)
divide(1, m, 1, m, i);
int ans = 0;
for(int i = 1; i <= m; ++i)
{
for(int j = 1; j <= m; ++j)
ans = max(ans, dp[i][j]);
cout << ans << '\n';
}
return 0;
}
