結果
問題 | No.1479 Matrix Eraser |
ユーザー | hotman78 |
提出日時 | 2021-04-16 21:39:42 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 8,984 bytes |
コンパイル時間 | 4,855 ms |
コンパイル使用メモリ | 269,128 KB |
実行使用メモリ | 813,792 KB |
最終ジャッジ日時 | 2024-07-03 01:05:40 |
合計ジャッジ時間 | 8,073 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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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 |
---|---|---|
testcase_00 | AC | 2 ms
6,812 KB |
testcase_01 | AC | 2 ms
6,940 KB |
testcase_02 | WA | - |
testcase_03 | AC | 2 ms
6,944 KB |
testcase_04 | WA | - |
testcase_05 | AC | 2 ms
6,940 KB |
testcase_06 | AC | 3 ms
6,940 KB |
testcase_07 | MLE | - |
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 | -- | - |
ソースコード
#line 2 "cpplib/util/template.hpp" #pragma GCC optimize("Ofast") #pragma GCC optimize("unroll-loops") #pragma GCC target("avx2") #include<bits/stdc++.h> using namespace std; struct __INIT__{__INIT__(){cin.tie(0);ios::sync_with_stdio(false);cout<<fixed<<setprecision(15);}}__INIT__; typedef long long lint; #define INF (1LL<<60) #define IINF (1<<30) #define EPS (1e-10) #define endl ('\n') typedef vector<lint> vec; typedef vector<vector<lint>> mat; typedef vector<vector<vector<lint>>> mat3; typedef vector<string> svec; typedef vector<vector<string>> smat; template<typename T>using V=vector<T>; template<typename T>using VV=V<V<T>>; template<typename T>inline void output(T t){bool f=0;for(auto i:t){cout<<(f?" ":"")<<i;f=1;}cout<<endl;} template<typename T>inline void output2(T t){for(auto i:t)output(i);} template<typename T>inline void debug(T t){bool f=0;for(auto i:t){cerr<<(f?" ":"")<<i;f=1;}cerr<<endl;} template<typename T>inline void debug2(T t){for(auto i:t)debug(i);} #define loop(n) for(long long _=0;_<(long long)(n);++_) #define _overload4(_1,_2,_3,_4,name,...) name #define __rep(i,a) repi(i,0,a,1) #define _rep(i,a,b) repi(i,a,b,1) #define repi(i,a,b,c) for(long long i=(long long)(a);i<(long long)(b);i+=c) #define rep(...) _overload4(__VA_ARGS__,repi,_rep,__rep)(__VA_ARGS__) #define _overload3_rev(_1,_2,_3,name,...) name #define _rep_rev(i,a) repi_rev(i,0,a) #define repi_rev(i,a,b) for(long long i=(long long)(b)-1;i>=(long long)(a);--i) #define rrep(...) _overload3_rev(__VA_ARGS__,repi_rev,_rep_rev)(__VA_ARGS__) // #define rep(i,...) for(auto i:range(__VA_ARGS__)) // #define rrep(i,...) for(auto i:reversed(range(__VA_ARGS__))) // #define repi(i,a,b) for(lint i=lint(a);i<(lint)(b);++i) // #define rrepi(i,a,b) for(lint i=lint(b)-1;i>=lint(a);--i) // #define irep(i) for(lint i=0;;++i) // inline vector<long long> range(long long n){if(n<=0)return vector<long long>();vector<long long>v(n);iota(v.begin(),v.end(),0LL);return v;} // inline vector<long long> range(long long a,long long b){if(b<=a)return vector<long long>();vector<long long>v(b-a);iota(v.begin(),v.end(),a);return v;} // inline vector<long long> range(long long a,long long b,long long c){if((b-a+c-1)/c<=0)return vector<long long>();vector<long long>v((b-a+c-1)/c);for(int i=0;i<(int)v.size();++i)v[i]=i?v[i-1]+c:a;return v;} // template<typename T>inline T reversed(T v){reverse(v.begin(),v.end());return v;} #define all(n) begin(n),end(n) template<typename T,typename E>bool chmin(T& s,const E& t){bool res=s>t;s=min<T>(s,t);return res;} template<typename T,typename E>bool chmax(T& s,const E& t){bool res=s<t;s=max<T>(s,t);return res;} const vector<lint> dx={1,0,-1,0,1,1,-1,-1}; const vector<lint> dy={0,1,0,-1,1,-1,1,-1}; #define SUM(v) accumulate(all(v),0LL) template<typename T,typename ...Args>auto make_vector(T x,int arg,Args ...args){if constexpr(sizeof...(args)==0)return vector<T>(arg,x);else return vector(arg,make_vector<T>(x,args...));} #define extrep(v,...) for(auto v:__MAKE_MAT__({__VA_ARGS__})) #define bit(n,a) ((n>>a)&1) vector<vector<long long>> __MAKE_MAT__(vector<long long> v){if(v.empty())return vector<vector<long long>>(1,vector<long long>());long long n=v.back();v.pop_back();vector<vector<long long>> ret;vector<vector<long long>> tmp=__MAKE_MAT__(v);for(auto e:tmp)for(long long i=0;i<n;++i){ret.push_back(e);ret.back().push_back(i);}return ret;} using graph=vector<vector<int>>; template<typename T>using graph_w=vector<vector<pair<int,T>>>; template<typename T,typename E>ostream& operator<<(ostream& out,pair<T,E>v){out<<"("<<v.first<<","<<v.second<<")";return out;} constexpr inline long long powll(long long a,long long b){long long res=1;while(b--)res*=a;return res;} #line 10 "cpplib/graph_tree/dinic.hpp" /** * @brief 最大流(Dinic法) */ template<typename T> struct dinic { struct edge { int to; typename std::list<edge>::iterator rev; T cap,flow; edge(int to,T cap):to(to),cap(cap),flow(T()){} }; int n,src,dst; T ret=T(); std::vector<std::list<edge>> g; std::vector<typename std::list<edge>::iterator>itr; std::vector<int>level,seen; std::map<std::pair<int,int>,bool>exist; std::map<std::pair<int,int>,typename std::list<edge>::iterator>m; dinic(){} dinic(int n,int s,int t):n(n),src(s),dst(t){g.assign(n,std::list<edge>());itr.resize(n);} void add_edge(int from, int to, T cap) { g[from].push_back(edge(to,cap)); g[to].push_back(edge(from,0)); m[std::make_pair(from,to)]=prev(g[from].end()); m[std::make_pair(to,from)]=prev(g[to].end()); g[from].back().rev=prev(g[to].end()); g[to].back().rev=prev(g[from].end()); exist[std::make_pair(from,to)]=1; exist[std::make_pair(to,from)]=1; } bool update_edge(int from, int to, T cap){ if(cap>0){ if(exist[std::make_pair(from,to)]){ auto e=m[std::make_pair(from,to)]; e->cap+=cap; }else{ add_edge(from,to,cap); } return 1; }else{ cap*=-1; if(exist[std::make_pair(from,to)]){ auto e=m[std::make_pair(from,to)]; if(e->cap-e->flow>=cap){ e->cap-=cap; }else{ e->cap-=cap; T req=e->flow-e->cap; e->flow-=req; e->rev->flow+=req; ret-=req; assert(cancel(dst,to,req)); assert(cancel(from,src,req)); if(e->cap==0&&e->rev->cap==0){ g[from].erase(e); g[to].erase(e->rev); exist[std::make_pair(from,to)]=0; exist[std::make_pair(to,from)]=0; } } return 1; }else{ return 0; } } } void bfs(int s) { level.assign(n,-1); std::queue<int> q; level[s] = 0; q.push(s); while (!q.empty()) { int v = q.front(); q.pop(); for(edge e: g[v]){ if (e.cap-e.flow > 0 and level[e.to] < 0) { level[e.to] = level[v] + 1; q.push(e.to); } } } } T dfs(int v, int t,T f) { if (v == t) return f; for(auto &e=itr[v];e!=g[v].end();++e){ if (e->cap-e->flow > 0 and level[v] < level[e->to]) { T d = dfs(e->to, t, std::min(f, e->cap-e->flow)); if (d > 0) { e->flow+=d; e->rev->flow -= d; return d; } } } return 0; } T __cancel(int v,int t,T f){ if (v == t) return f; seen[v]=1; for (edge& e: g[v]){ if (e.rev->flow > 0&&!seen[e.to]) { T d = __cancel(e.to, t, std::min(f,e.rev->flow)); if (d > 0) { e.flow+=d; e.rev->flow-=d; return d; } } } return 0; } T run() { T f; while (bfs(src), level[dst] >= 0) { for(int i=0;i<n;++i)itr[i]=g[i].begin(); while ((f = dfs(src, dst, std::numeric_limits<T>::max())) > 0) { ret += f; } } return ret; } T cancel(int s,int t,T mx){ T f; while(seen.assign(n,0),seen[s]=1,(f=__cancel(s, t, mx))>0)mx-=f; return mx==0; } T cap(int s,int t){ if(exist[std::make_pair(s,t)]){ return m[std::make_pair(s,t)]->cap; }else{ return 0; } } T flow(int s,int t){ if(exist[std::make_pair(s,t)]){ return m[std::make_pair(s,t)]->flow; }else{ return 0; } } void debug(){ for(int i=0;i<n;++i)for(int j=0;j<n;++j){ if(i==j)continue; if(flow(i,j)>0)std::cerr<<"("<<i<<","<<j<<")"; } std::cerr<<'\n'; } }; #line 3 "code.cpp" int main(){ lint h,w; cin>>h>>w; mat v(h,vec(w,0)); vector<lint>b; rep(i,h)rep(j,w){ cin>>v[i][j]; b.emplace_back(v[i][j]); } sort(all(b)); b.erase(unique(all(b)),b.end()); rep(i,h)rep(j,w)v[i][j]=lower_bound(all(b),v[i][j])-b.begin(); lint n=b.size(); vector<dinic<lint>>p(n); rep(i,n)p[i]=dinic<lint>(h+w+2,h+w,h+w+1); rep(i,h)rep(j,w){ p[v[i][j]].add_edge(i,j+h,INF); p[v[i][j]].add_edge(j+h,i,INF); } rep(i,n){ rep(j,h){ p[i].add_edge(h+w,j,1); } rep(j,w){ p[i].add_edge(j+h,h+w+1,1); } } lint ans=0; rep(i,n){ if(b[i]){ lint k=p[i].run(); ans+=k; } } cout<<ans<<endl; }