結果
問題 | No.2263 Perms |
ユーザー |
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提出日時 | 2023-04-07 21:54:23 |
言語 | C++23 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 4 ms / 2,000 ms |
コード長 | 3,166 bytes |
コンパイル時間 | 3,075 ms |
コンパイル使用メモリ | 266,344 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-10-02 19:26:19 |
合計ジャッジ時間 | 4,551 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 2 |
other | AC * 39 |
ソースコード
#include <bits/stdc++.h>using namespace std;#define FOR(i,m,n) for(int i=(m);i<(n);++i)#define REP(i,n) FOR(i,0,n)#define ALL(v) (v).begin(),(v).end()using ll = long long;constexpr int INF = 0x3f3f3f3f;constexpr long long LINF = 0x3f3f3f3f3f3f3f3fLL;constexpr double EPS = 1e-8;constexpr int MOD = 998244353;// constexpr int MOD = 1000000007;constexpr int DY4[]{1, 0, -1, 0}, DX4[]{0, -1, 0, 1};constexpr int DY8[]{1, 1, 0, -1, -1, -1, 0, 1};constexpr int DX8[]{0, -1, -1, -1, 0, 1, 1, 1};template <typename T, typename U>inline bool chmax(T& a, U b) { return a < b ? (a = b, true) : false; }template <typename T, typename U>inline bool chmin(T& a, U b) { return a > b ? (a = b, true) : false; }struct IOSetup {IOSetup() {std::cin.tie(nullptr);std::ios_base::sync_with_stdio(false);std::cout << fixed << setprecision(20);}} iosetup;struct HopcroftKarp {std::vector<int> match;explicit HopcroftKarp(const int left, const int right): match(left + right, -1), left(left), t(0), level(left),is_used(left, -1), graph(left) {}void add_edge(const int u, const int v) {graph[u].emplace_back(left + v);}int solve() {int res = 0;while (true) {std::fill(level.begin(), level.end(), -1);std::queue<int> que;for (int i = 0; i < left; ++i) {if (match[i] == -1) {que.emplace(i);level[i] = 0;}}while (!que.empty()) {const int ver = que.front();que.pop();for (const int dst : graph[ver]) {if (match[dst] != -1 && level[match[dst]] == -1) {level[match[dst]] = level[ver] + 1;que.emplace(match[dst]);}}}int tmp = 0;for (int i = 0; i < left; ++i) {if (match[i] == -1) {tmp += dfs(i);++t;}}if (tmp == 0) break;res += tmp;}return res;}private:const int left;int t;std::vector<int> level, is_used;std::vector<std::vector<int>> graph;bool dfs(const int ver) {is_used[ver] = t;for (const int dst : graph[ver]) {const int m = match[dst];if (m == -1 || (is_used[m] < t && level[m] == level[ver] + 1 && dfs(m))) {is_used[ver] = t;match[ver] = dst;match[dst] = ver;return true;}}return false;}};int main() {int n, m; cin >> n >> m;vector a(n, vector(n, 0)); REP(i, n) REP(j, n) cin >> a[i][j];vector p(m, vector(n, -1));REP(turn, m) {HopcroftKarp bipartite_matching(n, n);REP(i, n) REP(j, n) {if (a[i][j] > 0) bipartite_matching.add_edge(j, i);}if (bipartite_matching.solve() < n) {cout << "-1\n";return 0;}REP(i, n) {const int index = bipartite_matching.match[i] - n;p[turn][index] = i;--a[index][i];}}if (!ranges::all_of(a, [](const vector<int>& v) -> bool { return ranges::all_of(v, [](const int x) -> bool { return x == 0; }); })) {cout << "-1\n";return 0;}REP(i, m) REP(j, n) cout << p[i][j] + 1 << " \n"[j + 1 == n];return 0;}