結果

問題 No.2263 Perms
ユーザー ecottea
提出日時 2023-04-08 19:33:08
言語 C++17
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 11 ms / 2,000 ms
コード長 9,488 bytes
コンパイル時間 4,070 ms
コンパイル使用メモリ 265,732 KB
最終ジャッジ日時 2025-02-12 04:01:05
ジャッジサーバーID
(参考情報)
judge3 / judge5
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ファイルパターン 結果
sample AC * 2
other AC * 39
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ソースコード

diff #
プレゼンテーションモードにする

#ifndef HIDDEN_IN_VS //
//
#define _CRT_SECURE_NO_WARNINGS
//
#include <bits/stdc++.h>
using namespace std;
//
using ll = long long; // -2^63 2^63 = 9 * 10^18int -2^31 2^31 = 2 * 10^9
using pii = pair<int, int>; using pll = pair<ll, ll>; using pil = pair<int, ll>; using pli = pair<ll, int>;
using vi = vector<int>; using vvi = vector<vi>; using vvvi = vector<vvi>;
using vl = vector<ll>; using vvl = vector<vl>; using vvvl = vector<vvl>;
using vb = vector<bool>; using vvb = vector<vb>; using vvvb = vector<vvb>;
using vc = vector<char>; using vvc = vector<vc>; using vvvc = vector<vvc>;
using vd = vector<double>; using vvd = vector<vd>; using vvvd = vector<vvd>;
template <class T> using priority_queue_rev = priority_queue<T, vector<T>, greater<T>>;
using Graph = vvi;
//
const double PI = acos(-1);
const vi DX = { 1, 0, -1, 0 }; // 4
const vi DY = { 0, 1, 0, -1 };
int INF = 1001001001; ll INFL = 4004004004004004004LL;
double EPS = 1e-15;
//
struct fast_io { fast_io() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(18); } } fastIOtmp;
//
#define all(a) (a).begin(), (a).end()
#define sz(x) ((int)(x).size())
#define lbpos(a, x) (int)distance((a).begin(), std::lower_bound(all(a), x))
#define ubpos(a, x) (int)distance((a).begin(), std::upper_bound(all(a), x))
#define Yes(b) {cout << ((b) ? "Yes\n" : "No\n");}
#define rep(i, n) for(int i = 0, i##_len = int(n); i < i##_len; ++i) // 0 n-1
#define repi(i, s, t) for(int i = int(s), i##_end = int(t); i <= i##_end; ++i) // s t
#define repir(i, s, t) for(int i = int(s), i##_end = int(t); i >= i##_end; --i) // s t
#define repe(v, a) for(const auto& v : (a)) // a
#define repea(v, a) for(auto& v : (a)) // a
#define repb(set, d) for(int set = 0; set < (1 << int(d)); ++set) // d
#define repp(a) sort(all(a)); for(bool a##_perm = true; a##_perm; a##_perm = next_permutation(all(a))) // a
#define smod(n, m) ((((n) % (m)) + (m)) % (m)) // mod
#define uniq(a) {sort(all(a)); (a).erase(unique(all(a)), (a).end());} //
#define EXIT(a) {cout << (a) << endl; exit(0);} //
//
template <class T> inline ll pow(T n, int k) { ll v = 1; rep(i, k) v *= n; return v; }
template <class T> inline bool chmax(T& M, const T& x) { if (M < x) { M = x; return true; } return false; } // true
    
template <class T> inline bool chmin(T& m, const T& x) { if (m > x) { m = x; return true; } return false; } // true
    
template <class T> inline T get(T set, int i) { return (set >> i) & T(1); }
//
template <class T, class U> inline istream& operator>>(istream& is, pair<T, U>& p) { is >> p.first >> p.second; return is; }
template <class T> inline istream& operator>>(istream& is, vector<T>& v) { repea(x, v) is >> x; return is; }
template <class T> inline vector<T>& operator--(vector<T>& v) { repea(x, v) --x; return v; }
template <class T> inline vector<T>& operator++(vector<T>& v) { repea(x, v) ++x; return v; }
// Visual Studio
#ifdef _MSC_VER
#include "local.hpp"
// gcc
#else
inline int popcount(int n) { return __builtin_popcount(n); }
inline int popcount(ll n) { return __builtin_popcountll(n); }
inline int lsb(int n) { return n != 0 ? __builtin_ctz(n) : -1; }
inline int lsb(ll n) { return n != 0 ? __builtin_ctzll(n) : -1; }
inline int msb(int n) { return n != 0 ? (31 - __builtin_clz(n)) : -1; }
inline int msb(ll n) { return n != 0 ? (63 - __builtin_clzll(n)) : -1; }
#define gcd __gcd
#define dump(...)
#define dumpel(v)
#define dump_list(v)
#define dump_list2D(v)
#define input_from_file(f)
#define output_to_file(f)
#define Assert(b) { if (!(b)) while (1) cout << "OLE"; }
#endif
#endif //
#if __has_include(<atcoder/all>)
#include <atcoder/all>
using namespace atcoder;
//using mint = modint1000000007;
using mint = modint998244353;
//using mint = modint; // mint::set_mod(m);
istream& operator>>(istream& is, mint& x) { ll x_; is >> x_; x = x_; return is; }
ostream& operator<<(ostream& os, const mint& x) { os << x.val(); return os; }
using vm = vector<mint>; using vvm = vector<vm>; using vvvm = vector<vvm>;
#endif
//
/*
* (S, T)
*
* Bipartite_matching(int n, int m) : O(|V|)
* S, T n, m
*
* add_edge(int s, int t) : O(1)
* s∈S t∈T
*
* int solve() : O( min(|V|^(2/3) (|V| + |E|), (|V| + |E|)^(3/2)) )
*
* |||V| - |||V| - ||
*
* vector<pii> maximum_matching() : O(|E|)
* {s, t} ∈ S×T
* solve()
*
* vector<pii> minimum_edge_covering() : O(|V| + |E|)
* {s, t} ∈ S×T
* es e∈es
* solve()
*
* vvi minimum_vertex_covering() : O(|V| + |E|)
* S vs[0], T vs[1] vs
* vs v∈vs
* solve()
*
*
*/
struct Bipartite_matching {
// : https://qiita.com/drken/items/e805e3f514acceb87602
// : https://qiita.com/drken/items/7f98315b56c95a6181a4
int n, m;
mf_graph<int> g;
int ST, GL;
// |S|, |T|
Bipartite_matching(int n, int m) : n(n), m(m) {
// verify : https://judge.yosupo.jp/problem/bipartitematching
g = mf_graph<int>(n + m + 2);
//
ST = n + m;
GL = n + m + 1;
rep(i, n) g.add_edge(ST, i, 1);
rep(j, m) g.add_edge(j + n, GL, 1);
}
// s∈S t∈T
void add_edge(int s, int t) {
// verify : https://judge.yosupo.jp/problem/bipartitematching
g.add_edge(s, t + n, 1);
}
//
int solve() {
// verify : https://judge.yosupo.jp/problem/bipartitematching
return g.flow(ST, GL);
}
//
vector<pii> maximum_matching() {
// verify : https://judge.yosupo.jp/problem/bipartitematching
vector<pii> es;
repe(e, g.edges()) {
// S, T
if (e.flow == 1 && e.from != ST && e.to != GL) {
es.push_back({ e.from, e.to - n });
}
}
return es;
}
//
vector<pii> minimum_edge_covering() {
vector<pii> es;
// S, T
unordered_set<int> iso_s, iso_t;
rep(i, n) if (g.get_edge(i).flow == 0) iso_s.insert(i);
rep(j, m) if (g.get_edge(j + n).flow == 0) iso_t.insert(j + n);
repe(e, g.edges()) {
// S, T
if (e.flow == 1 && e.from != ST && e.to != GL) {
es.push_back({ e.from, e.to - n });
}
// S T
else if (iso_s.count(e.from)) {
es.push_back({ e.from, e.to - n });
iso_s.erase(e.from);
}
// T S
else if (iso_t.count(e.to)) {
es.push_back({ e.from, e.to - n });
iso_t.erase(e.to);
}
}
return es;
}
//
vvi minimum_vertex_covering() {
// verify : https://judge.yosupo.jp/problem/assignment
vvi vs(2);
// ar[v] : g ST v
vb ar = g.min_cut(ST);
// ST S
rep(i, n) if (!ar[i]) vs[0].push_back(i);
// ST T
rep(j, m) if (ar[n + j]) vs[1].push_back(j);
return vs;
}
};
int main() {
// input_from_file("input.txt");
// output_to_file("output.txt");
int n, m;
cin >> n >> m;
vvi a(n, vi(n));
cin >> a;
vvi res(m, vi(n));
rep(t, m) {
Bipartite_matching g(n, n);
rep(i, n) rep(j, n) if (a[i][j] > 0) g.add_edge(i, j);
int k = g.solve();
if (k < n) EXIT(-1);
auto es = g.maximum_matching();
for (auto [i, j] : es) {
res[t][i] = j;
a[i][j]--;
}
}
rep(i, n) rep(j, n) if (a[i][j] > 0) EXIT(-1);
rep(t, m) {
rep(i, n) cout << res[t][i] + 1 << (i < n - 1 ? " " : "\n");
}
}
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