結果
| 問題 |
No.957 植林
|
| コンテスト | |
| ユーザー |
noshi91
|
| 提出日時 | 2019-12-19 22:21:28 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 1,102 ms / 2,000 ms |
| コード長 | 7,074 bytes |
| コンパイル時間 | 1,655 ms |
| コンパイル使用メモリ | 106,732 KB |
| 最終ジャッジ日時 | 2025-01-08 12:50:41 |
|
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 45 |
ソースコード
//#define NDEBUG
#include <algorithm>
#include <cstddef>
#include <cstdint>
#include <iostream>
#include <utility>
#include <vector>
namespace n91 {
using i8 = std::int_fast8_t;
using i32 = std::int_fast32_t;
using i64 = std::int_fast64_t;
using u8 = std::uint_fast8_t;
using u32 = std::uint_fast32_t;
using u64 = std::uint_fast64_t;
using isize = std::ptrdiff_t;
using usize = std::size_t;
struct rep {
struct itr {
usize i;
constexpr itr(const usize i) noexcept : i(i) {}
void operator++() noexcept { ++i; }
constexpr usize operator*() const noexcept { return i; }
constexpr bool operator!=(const itr x) const noexcept { return i != x.i; }
};
const itr f, l;
constexpr rep(const usize f, const usize l) noexcept
: f(std::min(f, l)), l(l) {}
constexpr auto begin() const noexcept { return f; }
constexpr auto end() const noexcept { return l; }
};
struct revrep {
struct itr {
usize i;
constexpr itr(const usize i) noexcept : i(i) {}
void operator++() noexcept { --i; }
constexpr usize operator*() const noexcept { return i; }
constexpr bool operator!=(const itr x) const noexcept { return i != x.i; }
};
const itr f, l;
constexpr revrep(const usize f, const usize l) noexcept
: f(l - 1), l(std::min(f, l) - 1) {}
constexpr auto begin() const noexcept { return f; }
constexpr auto end() const noexcept { return l; }
};
template <class T> auto md_vec(const usize n, const T &value) {
return std::vector<T>(n, value);
}
template <class... Args> auto md_vec(const usize n, Args... args) {
return std::vector<decltype(md_vec(args...))>(n, md_vec(args...));
}
template <class T> constexpr T difference(const T &a, const T &b) noexcept {
if (a < b) {
return b - a;
} else {
return a - b;
}
}
template <class T> void chmin(T &a, const T &b) noexcept {
if (b < a) {
a = b;
}
}
template <class T> void chmax(T &a, const T &b) noexcept {
if (a < b) {
a = b;
}
}
template <class F> class fix_point : private F {
public:
explicit constexpr fix_point(F &&f) : F(std::forward<F>(f)) {}
template <class... Args>
constexpr decltype(auto) operator()(Args &&... args) const {
return F::operator()(*this, std::forward<Args>(args)...);
}
};
template <class F> constexpr decltype(auto) make_fix(F &&f) {
return fix_point<F>(std::forward<F>(f));
}
template <class T> T scan() {
T ret;
std::cin >> ret;
return ret;
}
} // namespace n91
#ifndef NIMI_GRAPH
#define NIMI_GRAPH
#include <vector>
namespace nimi {
struct base_edge {
int from;
int to;
base_edge(int from, int to) : from(from), to(to) {}
};
template <class T> struct edge : public base_edge {
T val;
edge(int from, int to, T v) : base_edge(from, to), val(v) {}
};
template <> struct edge<void> : public base_edge {
edge(int from, int to) : base_edge(from, to) {}
};
template <class C> struct maxflow_edge : public base_edge {
C cap;
std::size_t rev;
maxflow_edge(int from, int to, C cap, std::size_t rev)
: base_edge(from, to), cap(cap), rev(rev) {}
};
template <class C> struct mcf_edge : public base_edge {
C cap;
C cost;
std::size_t rev;
mcf_edge(int from, int to, C cap, C cost, std::size_t rev)
: base_edge(from, to), cap(cap), cost(cost), rev(rev) {}
};
template <class T>
struct directed_graph : public std::vector<std::vector<edge<T>>> {
directed_graph(std::size_t n) : std::vector<std::vector<edge<T>>>(n) {}
void add_edge(const edge<T> &e) { this->at(e.from).push_back(e); }
};
template <class T>
struct undirected_graph : public std::vector<std::vector<edge<T>>> {
undirected_graph(std::size_t n) : std::vector<std::vector<edge<T>>>(n) {}
void add_edge(const edge<T> &e) {
this->at(e.from).push_back(e);
edge<T> re = e;
std::swap(re.from, re.to);
this->at(e.to).push_back(re);
}
};
template <class C>
struct maxflow_graph : public std::vector<std::vector<maxflow_edge<C>>> {
maxflow_graph(std::size_t n) : std::vector<std::vector<maxflow_edge<C>>>(n) {}
void add_edge(int from, int to, C cap, std::size_t rev_cap = 0) {
this->at(from).push_back(
maxflow_edge<C>(from, to, cap, this->at(to).size()));
this->at(to).push_back(
maxflow_edge<C>(to, from, rev_cap, this->at(from).size() - 1));
}
};
template <class C>
struct mcf_graph : public std::vector<std::vector<mcf_edge<C>>> {
mcf_graph(std::size_t n) : std::vector<std::vector<mcf_edge<C>>>(n) {}
void add_edge(int from, int to, C cap, C cost, std::size_t rev_cap = 0) {
this->at(from).push_back(
mcf_edge<C>(from, to, cap, cost, this->at(to).size()));
this->at(to).push_back(
mcf_edge<C>(to, from, rev_cap, -cost, this->at(from).size() - 1));
}
};
} // namespace nimi
#endif
#ifndef NIMI_GRAPH_MAXFLOW_DINIC
#define NIMI_GRAPH_MAXFLOW_DINIC
#include <functional>
#include <limits>
#include <queue>
#include <vector>
namespace nimi {
template <class C>
C dinic(nimi::maxflow_graph<C> &g, std::size_t s, std::size_t t) {
C inf = std::numeric_limits<C>::max();
C ans = 0;
std::size_t n = g.size();
std::vector<int> level(n);
std::vector<std::size_t> iter(n);
std::function<void(void)> g_level = [&]() {
level.assign(n, -1);
std::queue<int> que;
que.push(s);
level[s] = 0;
while (!que.empty()) {
int v = que.front();
que.pop();
for (const auto &e : g[v]) {
if (e.cap > 0 && level[e.to] == -1) {
level[e.to] = level[e.from] + 1;
que.push(e.to);
}
}
}
};
std::function<C(int, C)> dinic_dfs = [&](int v, C f) {
if (v == t)
return f;
C now = f;
for (std::size_t &i = iter[v]; i < g[v].size(); i++) {
auto &e = g[v][i];
if (e.cap > 0 && level[e.to] > level[e.from]) {
C ff = dinic_dfs(e.to, std::min(now, e.cap));
e.cap -= ff;
g[e.to][e.rev].cap += ff;
now -= ff;
if (now == 0)
return f - now;
}
}
return f - now;
};
while (1) {
g_level();
if (level[t] < 0)
break;
C f;
iter.assign(n, 0);
while ((f = dinic_dfs(s, inf)) > 0) {
ans += f;
}
}
return ans;
}
} // namespace nimi
#endif
#include <algorithm>
#include <iostream>
#include <utility>
#include <vector>
namespace n91 {
void main_() {
/*
std::ios::sync_with_stdio(false);
std::cin.tie(nullptr);
//*/
const usize h = scan<usize>();
const usize w = scan<usize>();
nimi::maxflow_graph<u64> g(h + w + 2);
const usize s = h + w;
const usize t = h + w + 1;
for (const usize i : rep(0, h)) {
for (const usize j : rep(0, w)) {
const u64 c = scan<u64>();
g.add_edge(i, h + j, c);
g.add_edge(s, i, c);
}
}
u64 ans = 0;
for (const usize i : rep(0, h)) {
const u64 c = scan<u64>();
ans += c;
g.add_edge(i, t, c);
}
for (const usize i : rep(0, w)) {
const u64 c = scan<u64>();
ans += c;
g.add_edge(h + i, t, c);
}
std::cout << ans - nimi::dinic(g, s, t) << std::endl;
}
} // namespace n91
int main() {
n91::main_();
return 0;
}
noshi91