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111
LibreOJ/3500/3500.cpp
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111
LibreOJ/3500/3500.cpp
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#include <iostream>
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#include <queue>
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#include <vector>
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using std::cin;
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using std::cout;
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const char endl = '\n';
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const int MAX = 1e6;
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void solve() {
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int n, m;
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cin >> n >> m;
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std::vector<std::vector<int>>
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a(n, std::vector<int>(m, 0)),
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b(n - 1, std::vector<int>(m - 1, 0));
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std::vector<std::vector<std::pair<int, int>>>
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g(n + m, std::vector<std::pair<int, int>>());
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for (auto &i : b) {
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for (auto &x : i) {
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cin >> x;
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}
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}
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for (int i = n - 2; i >= 0; i--) {
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for (int j = m - 2; j >= 0; j--) {
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a[i][j] = b[i][j] - a[i + 1][j] - a[i + 1][j + 1] - a[i][j + 1];
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}
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}
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for (int i = 0; i < n; i++) {
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for (int j = 0; j < m; j++) {
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if ((i + j) & 1) {
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g[i].emplace_back(j + n, a[i][j]);
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g[j + n].emplace_back(i, MAX - a[i][j]);
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} else {
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g[j + n].emplace_back(i, a[i][j]);
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g[i].emplace_back(j + n, MAX - a[i][j]);
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}
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}
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}
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std::vector<long long> dist(n + m);
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auto spfa = [&]() -> bool {
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std::queue<int> q;
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std::vector<bool> vis(n + m, true);
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std::vector<int> cnt(n + m);
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for (int i = 0; i < n + m; i++) {
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q.emplace(i);
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}
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while (!q.empty()) {
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int u = q.front();
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q.pop();
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vis[u] = false;
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for (auto e : g[u]) {
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int v = e.first,
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w = e.second;
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if (dist[v] > dist[u] + w) {
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dist[v] = dist[u] + w;
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if (!vis[v]) {
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if (++cnt[v] > n + m) return false;
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vis[v] = true;
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q.emplace(v);
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}
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}
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}
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}
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return true;
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};
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if (!spfa()) {
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cout << "NO" << endl;
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return;
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}
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cout << "YES" << endl;
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for (int i = 0; i < n; i++) {
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for (int j = 0; j < m; j++) {
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cout << a[i][j] + ((i + j) & 1 ? dist[i] - dist[j + n] : dist[j + n] - dist[i]) << ' ';
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}
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cout << endl;
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}
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}
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int main() {
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std::ios::sync_with_stdio(false);
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cin.tie(nullptr);
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int t;
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cin >> t;
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while (t--) solve();
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return 0;
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}
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LibreOJ/3500/data/checker.cpp
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