#include <bits/stdc++.h>
using namespace std;
using ll = long long;
template <class a, class b> ostream& operator<<(ostream &l, const pair<a, b> &r) {
l << "(" << r.first << ", " << r.second << ")";
return l;
}
template <class t, unsigned long int s> ostream& operator<<(ostream &l, const array<t, s> &r) {
l << "[";
for (int i = 0; i + 1 < s; i++) l << r[i] << ", ";
if (s > 0) l << r[s - 1];
l << "]";
return l;
}
template <class t> ostream& operator<<(ostream &l, const vector<t> &r) {
l << "{";
for (int i = 0; i + 1 < r.size(); i++) l << r[i] << ", ";
if (!r.empty()) l << r.back();
l << "}";
return l;
}
int main() {
ios::sync_with_stdio(false);
cin.tie(0);
int n, m;
cin >> n >> m;
vector<vector<int>> a(n, vector<int>(m));
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
char c;
cin >> c;
a[i][j] = c == '.' ? -1 : (c - '0');
}
}
vector<array<int, 3>> ints;
array<array<int, 2>, 4> del{{ {0, 1}, {0, -1}, {1, 0}, {-1, 0} }};
for (int i = 0; i < n; i++) {
for (int j = 0; j < m; j++) {
if (a[i][j] == -1) continue;
array<int, 3> x{{ j, j, 0 }};
queue<pair<int, int>> q;
q.push({i, j});
while (!q.empty()) {
pair<int, int> p = q.front();
q.pop();
if (a[p.first][p.second] == -1) continue;
x[0] = min(x[0], p.second);
x[1] = max(x[1], p.second);
x[2] += a[p.first][p.second];
a[p.first][p.second] = -1;
for (auto [dx, dy] : del) {
dx += p.first;
dy += p.second;
if (dx < 0 || dx >= n || dy < 0 || dy >= m) continue;
q.push({dx, dy});
}
}
ints.push_back(x);
}
}
if (n > 300) return 0;
sort(ints.begin(), ints.end());
vector<array<int, 3>> aux = ints;
sort(aux.begin(), aux.end(), [](const array<int, 3> &l, const array<int, 3> &r) -> bool {
return l[1] < r[1];
});
vector<vector<int>> c(m, vector<int>(m));
for (int i = 0; i < m; i++) {
int ptr = 0, rtp = 0, cur = 0;
for (int j = i; j < m; j++) {
while (ptr < ints.size() && ints[ptr][0] <= j) {
if (ints[ptr][0] > i - 1) cur += ints[ptr][2];
ptr++;
}
while (rtp < aux.size() && aux[rtp][1] < j) {
if (aux[rtp][0] > i - 1) cur -= aux[rtp][2];
rtp++;
}
c[i][j] = cur;
}
}
vector<int> dp(m + 1), pd(m + 1);
auto dnc = [&](int l, int r, int ql, int qr, auto &&self) -> void {
int m = (l + r) / 2;
pair<int, int> cur;
for (int i = ql; i <= min(qr, m); i++) {
cur = max(cur, { dp[i] + c[i][m], i });
}
pd[m + 1] = cur.first;
if (l == r) return;
self(l, m, ql, cur.second, self);
self(m + 1, r, cur.second, qr, self);
};
for (int i = 0; i < m; i++) {
fill(pd.begin(), pd.end(), 0);
dnc(0, m - 1, 0, m - 1, dnc);
int mx = 0;
for (int i : pd) mx = max(mx, i);
cout << mx << '\n';
swap(dp, pd);
}
}
