結果
問題 | No.957 植林 |
ユーザー | ningenMe |
提出日時 | 2023-07-18 04:36:40 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
TLE
|
実行時間 | - |
コード長 | 7,804 bytes |
コンパイル時間 | 2,785 ms |
コンパイル使用メモリ | 223,752 KB |
実行使用メモリ | 16,800 KB |
最終ジャッジ日時 | 2024-09-18 04:15:29 |
合計ジャッジ時間 | 6,558 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
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testcase_00 | AC | 2 ms
13,756 KB |
testcase_01 | AC | 2 ms
6,940 KB |
testcase_02 | AC | 2 ms
6,940 KB |
testcase_03 | TLE | - |
testcase_04 | -- | - |
testcase_05 | -- | - |
testcase_06 | -- | - |
testcase_07 | -- | - |
testcase_08 | -- | - |
testcase_09 | -- | - |
testcase_10 | -- | - |
testcase_11 | -- | - |
testcase_12 | -- | - |
testcase_13 | -- | - |
testcase_14 | -- | - |
testcase_15 | -- | - |
testcase_16 | -- | - |
testcase_17 | -- | - |
testcase_18 | -- | - |
testcase_19 | -- | - |
testcase_20 | -- | - |
testcase_21 | -- | - |
testcase_22 | -- | - |
testcase_23 | -- | - |
testcase_24 | -- | - |
testcase_25 | -- | - |
testcase_26 | -- | - |
testcase_27 | -- | - |
testcase_28 | -- | - |
testcase_29 | -- | - |
testcase_30 | -- | - |
testcase_31 | -- | - |
testcase_32 | -- | - |
testcase_33 | -- | - |
testcase_34 | -- | - |
testcase_35 | -- | - |
testcase_36 | -- | - |
testcase_37 | -- | - |
testcase_38 | -- | - |
testcase_39 | -- | - |
testcase_40 | -- | - |
testcase_41 | -- | - |
testcase_42 | -- | - |
testcase_43 | -- | - |
testcase_44 | -- | - |
testcase_45 | -- | - |
testcase_46 | -- | - |
testcase_47 | -- | - |
ソースコード
#include <bits/stdc++.h> using namespace std; using int128 = __int128_t; using int64 = long long; #define ALL(obj) (obj).begin(),(obj).end() /* * @title FastIO * @docs md/util/FastIO.md */ class FastIO{ private: inline static constexpr int ch_0='0'; inline static constexpr int ch_9='9'; inline static constexpr int ch_n='-'; inline static constexpr int ch_s=' '; inline static constexpr int ch_l='\n'; inline static void endline_skip(char& ch) { while(ch==ch_l) ch=getchar(); } template<typename T> inline static void read_integer(T &x) { int neg=0; char ch; x=0; ch=getchar(); endline_skip(ch); if(ch==ch_n) neg=1,ch=getchar(); for(;(ch_0 <= ch && ch <= ch_9); ch = getchar()) x = x*10 + (ch-ch_0); if(neg) x*=-1; } template<typename T> inline static void read_unsigned_integer(T &x) { char ch; x=0; ch=getchar(); endline_skip(ch); for(;(ch_0 <= ch && ch <= ch_9); ch = getchar()) x = x*10 + (ch-ch_0); } inline static void read_string(string &x) { char ch; x=""; ch=getchar(); endline_skip(ch); for(;(ch != ch_s && ch!=ch_l); ch = getchar()) x.push_back(ch); } inline static char ar[40]; inline static char *ch_ar; template<typename T> inline static void write_integer(T x) { ch_ar=ar; if(x< 0) putchar(ch_n), x=-x; if(x==0) putchar(ch_0); for(;x;x/=10) *ch_ar++=(ch_0+x%10); while(ch_ar--!=ar) putchar(*ch_ar); } public: inline static void read(int &x) {read_integer<int>(x);} inline static void read(long long &x) {read_integer<long long>(x);} inline static void read(unsigned int &x) {read_unsigned_integer<unsigned int>(x);} inline static void read(unsigned long long &x) {read_unsigned_integer<unsigned long long>(x);} inline static void read(string &x) {read_string(x);} inline static void read(__int128_t &x) {read_integer<__int128_t>(x);} inline static void write(__int128_t x) {write_integer<__int128_t>(x);} inline static void write(char x) {putchar(x);} }; #define read(arg) FastIO::read(arg) #define write(arg) FastIO::write(arg) template<class T> using priority_queue_reverse = priority_queue<T,vector<T>,greater<T>>; constexpr int64 HIGHINF = 1'000'000'000'000'000'000LL; constexpr int64 LOWINF = 1'000'000'000'000'000LL; //' constexpr long double PI = 3.1415926535897932384626433L; template <class T> vector<T> multivector(size_t N,T init){return vector<T>(N,init);} template <class... T> auto multivector(size_t N,T... t){return vector<decltype(multivector(t...))>(N,multivector(t...));} template <class T> void corner(bool flg, T hoge) {if (flg) {cout << hoge << endl; exit(0);}} template <class T, class U>ostream &operator<<(ostream &o, const map<T, U>&obj) {o << "{"; for (auto &x : obj) o << " {" << x.first << " : " << x.second << "}" << ","; o << " }"; return o;} template <class T>ostream &operator<<(ostream &o, const set<T>&obj) {o << "{"; for (auto itr = obj.begin(); itr != obj.end(); ++itr) o << (itr != obj.begin() ? ", " : "") << *itr; o << "}"; return o;} template <class T>ostream &operator<<(ostream &o, const multiset<T>&obj) {o << "{"; for (auto itr = obj.begin(); itr != obj.end(); ++itr) o << (itr != obj.begin() ? ", " : "") << *itr; o << "}"; return o;} template <class T>ostream &operator<<(ostream &o, const vector<T>&obj) {o << "{"; for (int i = 0; i < (int)obj.size(); ++i)o << (i > 0 ? ", " : "") << obj[i]; o << "}"; return o;} template <class T>ostream &operator<<(ostream &o, const deque<T>&obj) {o << "{"; for (int i = 0; i < (int)obj.size(); ++i)o << (i > 0 ? ", " : "") << obj[i]; o << "}"; return o;} template <class T, class U>ostream &operator<<(ostream &o, const pair<T, U>&obj) {o << "{" << obj.first << ", " << obj.second << "}"; return o;} void print(void) {cout << endl;} template <class Head> void print(Head&& head) {cout << head;print();} template <class Head, class... Tail> void print(Head&& head, Tail&&... tail) {cout << head << " ";print(forward<Tail>(tail)...);} template <class T> void chmax(T& a, const T b){a=max(a,b);} template <class T> void chmin(T& a, const T b){a=min(a,b);} vector<string> split(const string &str, const char delemiter) {vector<string> res;stringstream ss(str);string buffer; while( getline(ss, buffer, delemiter) ) res.push_back(buffer); return res;} inline constexpr int msb(int x) {return x?31-__builtin_clz(x):-1;} inline constexpr int64 ceil_div(const int64 a,const int64 b) {return (a+(b-1))/b;}// return ceil(a/b) void YN(bool flg) {cout << (flg ? "YES" : "NO") << endl;} void Yn(bool flg) {cout << (flg ? "Yes" : "No") << endl;} void yn(bool flg) {cout << (flg ? "yes" : "no") << endl;} /* * @title DinicMaxFlow - Dinicフロー * @docs md/graph/Dinic.md */ template <class T> class DinicMaxFlow { struct Edge { size_t to, rev; T cap; }; vector<vector<Edge>> edge; vector<int> level, iter; T inf_flow; inline void bfs(const size_t start) { for (int i = 0; i < level.size(); ++i) level[i] = -1; queue<size_t> q; level[start] = 0; q.push(start); while (q.size()) { auto from = q.front(); q.pop(); for (auto& e : edge[from]) { if (e.cap > 0 && level[e.to] < 0) { level[e.to] = level[from] + 1; q.push(e.to); } } } } inline T dfs(size_t from, size_t goal, T flow) { if (from == goal) return flow; for (auto& e: edge[from]) { if (e.cap <= 0 || level[from] >= level[e.to]) continue; T dflow = dfs(e.to, goal, min(flow, e.cap)); if (dflow <= 0) continue; e.cap -= dflow; edge[e.to][e.rev].cap += dflow; return dflow; } return 0; } public: DinicMaxFlow(const size_t N) : edge(N), level(N), iter(N), inf_flow(0) { // do nothing } inline void make_edge(const size_t from,const size_t to, T cap) { edge[from].push_back({ to, edge[to].size(), cap }); edge[to].push_back({ from, edge[from].size() - 1, 0}); inf_flow += cap; } inline T flow(const size_t start,const size_t goal) { T max_flow = 0; while (1) { bfs(start); if (level[goal] < 0) return max_flow; for (int i = 0; i < iter.size(); ++i) iter[i] = 0; T flow; while ((flow = dfs(start, goal, inf_flow))>0) max_flow += flow; } } }; //verify https://atcoder.jp/contests/arc085/tasks/arc085_c /** * @url * @est */ int main() { cin.tie(0);ios::sync_with_stdio(false); int H,W; read(H),read(W); vector<vector<int64>> grid(H,vector<int64>(W)); for(int i=0;i<H;++i) for(int j=0;j<W;++j) read(grid[i][j]); vector<int64> R(H),C(W); for(int i=0;i<H;++i) read(R[i]); for(int j=0;j<W;++j) read(C[j]); //行/列に対して「植える」:0, 「植えない」:1 ,と割り当てる //加えて、問題の性質的にi行目に関してはフローを流す前に貪欲に選んでしまう //そうすることで、辺の数が2乗オーダーから落ちる DinicMaxFlow<int64> di(H+W+2); int S = H+W, G = H+W+1; int64 ans = 0; for(int i=0;i<H;++i) { //i行目を全部植えたときのコストを計算 int64 cost = 0; for(int j=0;j<W;++j) cost += grid[i][j]; //差分が正のとき if(R[i]-cost >= 0) ans += R[i]-cost; //差分が負のとき→ iが0のとき|cost-R[i]|失う else di.make_edge(i,G,abs(R[i]-cost)); } for(int j=0;j<W;++j) { //j列目を全部植えたときのコスト int64 cost = C[j]; //jが0のとき|cost|得る ans += cost, di.make_edge(S,j+H,cost); } for(int i=0;i<H;++i) for(int j=0;j<W;++j) { //iが1,jが0のとき、grid[i][j]失う di.make_edge(j+H,i,grid[i][j]); } cout << ans - di.flow(S,G) << endl; return 0; }