結果
問題 | No.421 しろくろチョコレート |
ユーザー | mai |
提出日時 | 2017-01-14 20:58:50 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 5 ms / 2,000 ms |
コード長 | 7,329 bytes |
コンパイル時間 | 2,003 ms |
コンパイル使用メモリ | 188,348 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-09-23 07:14:55 |
合計ジャッジ時間 | 3,593 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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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 | 3 ms
6,944 KB |
testcase_02 | AC | 3 ms
6,940 KB |
testcase_03 | AC | 3 ms
6,944 KB |
testcase_04 | AC | 2 ms
6,940 KB |
testcase_05 | AC | 3 ms
6,940 KB |
testcase_06 | AC | 2 ms
6,940 KB |
testcase_07 | AC | 3 ms
6,940 KB |
testcase_08 | AC | 3 ms
6,940 KB |
testcase_09 | AC | 2 ms
6,944 KB |
testcase_10 | AC | 2 ms
6,940 KB |
testcase_11 | AC | 3 ms
6,940 KB |
testcase_12 | AC | 2 ms
6,940 KB |
testcase_13 | AC | 2 ms
6,940 KB |
testcase_14 | AC | 2 ms
6,940 KB |
testcase_15 | AC | 2 ms
6,944 KB |
testcase_16 | AC | 5 ms
6,944 KB |
testcase_17 | AC | 4 ms
6,940 KB |
testcase_18 | AC | 5 ms
6,940 KB |
testcase_19 | AC | 2 ms
6,944 KB |
testcase_20 | AC | 4 ms
6,940 KB |
testcase_21 | AC | 4 ms
6,940 KB |
testcase_22 | AC | 4 ms
6,940 KB |
testcase_23 | AC | 2 ms
6,940 KB |
testcase_24 | AC | 2 ms
6,944 KB |
testcase_25 | AC | 2 ms
6,940 KB |
testcase_26 | AC | 2 ms
6,940 KB |
testcase_27 | AC | 2 ms
6,940 KB |
testcase_28 | AC | 3 ms
6,940 KB |
testcase_29 | AC | 3 ms
6,940 KB |
testcase_30 | AC | 4 ms
6,944 KB |
testcase_31 | AC | 3 ms
6,944 KB |
testcase_32 | AC | 4 ms
6,944 KB |
testcase_33 | AC | 3 ms
6,940 KB |
testcase_34 | AC | 3 ms
6,944 KB |
testcase_35 | AC | 3 ms
6,940 KB |
testcase_36 | AC | 3 ms
6,940 KB |
testcase_37 | AC | 5 ms
6,940 KB |
testcase_38 | AC | 4 ms
6,940 KB |
testcase_39 | AC | 3 ms
6,940 KB |
testcase_40 | AC | 3 ms
6,940 KB |
testcase_41 | AC | 2 ms
6,940 KB |
testcase_42 | AC | 2 ms
6,944 KB |
testcase_43 | AC | 3 ms
6,944 KB |
testcase_44 | AC | 3 ms
6,940 KB |
testcase_45 | AC | 3 ms
6,940 KB |
testcase_46 | AC | 2 ms
6,940 KB |
testcase_47 | AC | 4 ms
6,940 KB |
testcase_48 | AC | 3 ms
6,944 KB |
testcase_49 | AC | 3 ms
6,944 KB |
testcase_50 | AC | 2 ms
6,944 KB |
testcase_51 | AC | 3 ms
6,940 KB |
testcase_52 | AC | 3 ms
6,940 KB |
testcase_53 | AC | 2 ms
6,944 KB |
testcase_54 | AC | 3 ms
6,940 KB |
testcase_55 | AC | 2 ms
6,944 KB |
testcase_56 | AC | 2 ms
6,944 KB |
testcase_57 | AC | 3 ms
6,944 KB |
testcase_58 | AC | 4 ms
6,940 KB |
testcase_59 | AC | 3 ms
6,944 KB |
testcase_60 | AC | 5 ms
6,940 KB |
testcase_61 | AC | 5 ms
6,944 KB |
testcase_62 | AC | 3 ms
6,944 KB |
testcase_63 | AC | 2 ms
6,944 KB |
testcase_64 | AC | 3 ms
6,940 KB |
ソースコード
#include<bits/stdc++.h> using namespace std; typedef unsigned int uint; typedef long long int ll; typedef unsigned long long int ull; #define debugv(v) printf("L%d %s => ",__LINE__,#v);for(auto e:v){cout<<e<<" ";}cout<<endl; #define debugm(m) printf("L%d %s is..\n",__LINE__,#m);for(auto v:m){for(auto e:v){cout<<e<<" ";}cout<<endl;} #define debuga(m,w) printf("L%d %s is => ",__LINE__,#m);for(int x=0;x<(w);x++){cout<<(m)[x]<<" ";}cout<<endl; #define debugaa(m,w,h) printf("L%d %s is..\n",__LINE__,#m);for(int y=0;y<(h);y++){for(int x=0;x<(w);x++){cout<<(m)[x][y]<<" ";}cout<<endl;} #define debugaar(m,w,h) printf("L%d %s is..\n",__LINE__,#m);for(int y=0;y<(h);y++){for(int x=0;x<(w);x++){cout<<(m)[y][x]<<" ";}cout<<endl;} #define ALL(v) (v).begin(),(v).end() #define BIGINT 0x7FFFFFFF #define E107 1000000007ll void printbit(int u){if(u==0)cout<<0;else{int s=0,k=0;for(;0<u;u>>=1,k++)s=(s<<1)|(u&1);for(;0<k--;s>>=1)cout<<(s&1);}} #define TIME chrono::system_clock::now() #define MILLISEC(t) (chrono::duration_cast<chrono::milliseconds>(t).count()) namespace{ std::chrono::system_clock::time_point t; void tic(){t=TIME;} void toc(){fprintf(stderr,"TIME : %lldms\n",MILLISEC(TIME-t));} } template<typename T1,typename T2> ostream& operator <<(ostream &o,const pair<T1,T2> p){o<<"("<<p.first<<":"<<p.second<<")";return o;} void safebreak(){static auto t = TIME;assert (MILLISEC(TIME-t) < 5000);} // todo : typedef int_c int // capacity // TODO:マーカーの実装? class Flow{ public: size_t n; struct Arrow{ int from,to; int w_max; // TODO: leftに改名 int cap; Arrow(int from=0,int to=0,int w=1):from(from),to(to),w_max(w),cap(w){} bool operator<(const Arrow& a) const {return (from<a.from)|(to<a.to)|(w_max<a.w_max)|(cap<a.cap);} }; vector<vector<int>> vertex_to; vector<vector<int>> vertex_from; vector<Arrow> arrow; Flow(int n,int m=5010):n(n),vertex_to(n),vertex_from(n){arrow.reserve(m);} void connect(int from, int to, int w_max){ vertex_to[from].push_back(arrow.size()); // toto vertex_from[to].push_back(arrow.size()); // fromfrom arrow.emplace_back(from,to,w_max); } size_t degree(int v){ return vertex_to[v].size() + vertex_from[v].size(); } size_t degree_in(int v){ return vertex_from[v].size(); } size_t degree_out(int v){ return vertex_to[v].size(); } }; // DAG int _dinic_path_dfs(Flow& flow, vector<int>& result, vector<bool>& flag, const vector<int>& dist, int u, int i_sink, int mini){ // TODO: 経路再利用 if (i_sink == u) return mini; if (flag[u]) return -1; flag[u] = true; int sumw = 0; bool term=true; for (int e : flow.vertex_to[u]){ Flow::Arrow& a = flow.arrow[e]; if (a.w_max > 0 && dist[u]>dist[a.to]){ int w ; if (mini < 0) w = a.w_max; else w = min(a.w_max, mini); w = _dinic_path_dfs(flow, result, flag, dist, a.to, i_sink, w); if (w==-1) continue; a.w_max -= w; result[a.to] += w; //printf("%d->%d (%d) : w=%d mini=%d \n",a.from,a.to,a.w_max+w,w,mini); sumw +=w; mini -=w; term = false; flag[u] = false; } } for (int e : flow.vertex_from[u]){ Flow::Arrow& a = flow.arrow[e]; if (a.cap>a.w_max && dist[u]>dist[a.from]){ int w ; if (mini < 0) w = a.cap-a.w_max; else w = min(a.cap-a.w_max, mini); w = _dinic_path_dfs(flow, result, flag, dist, a.from, i_sink, w); if (w==-1) continue; a.w_max += w; result[a.to] -= w; //printf("%d<-%d (%d) : w=%d mini=%d \n",a.from,a.to,a.w_max-w,w,mini); sumw +=w; mini -=w; term = false; flag[u] = false; } } return term ? -1 : sumw; } // flowは書き換えられる. void dinic(Flow &flow, vector<int>& result, int i_source, int i_sink){ assert(i_source != i_sink); result.resize(flow.n); vector<int> dist(flow.n); queue<int> q; vector<bool> flag(flow.n); // TODO: for (int distbegin=0; ; distbegin+=flow.n){ safebreak(); q.emplace(i_sink); // bfsはsinkからsourceへの距離を計算. dist[i_sink] = distbegin+1; while (!q.empty()){ int v = q.front(); q.pop(); for (int ie : flow.vertex_from[v]){ const Flow::Arrow& e = flow.arrow[ie]; if (0<e.w_max && dist[e.from] <= distbegin){ dist[e.from] = dist[v]+1; q.emplace(e.from); } } for (int ie : flow.vertex_to[v]){ const Flow::Arrow& e = flow.arrow[ie]; if (e.w_max<e.cap && dist[e.to] <= distbegin){ dist[e.to] = dist[v]+1; q.emplace(e.to); } } } //debugv(dist); fill(ALL(flag),false); if (dist[i_source] <= distbegin){ break; }else{ result[i_source] += _dinic_path_dfs(flow,result,flag,dist,i_source,i_sink,-1); } } } class BipartiteMatching{ public: Flow flow; int n,m; int ss; BipartiteMatching(int n,int m):flow(2+n+m),n(n),m(m),ss(n+m){ for (int i=0;i<n;i++) flow.connect(ss,i,1); for (int i=0;i<m;i++) flow.connect(n+i,ss+1,1); } void connect(int l,int r){ flow.connect(l ,r+n ,1); } void solve_dinic(set<Flow::Arrow>& result){ vector<int> r; dinic(flow,r,ss,ss+1); for (Flow::Arrow& a : flow.arrow){ if (a.from==ss || a.to==ss+1) continue; if (a.w_max == 0){ result.insert(a); } } } }; int width,height; int m,n; string cho[55]; int main(){ int i,j,k; int x,y,a,b; cin >> height >> width; n = height*width; BipartiteMatching bm(n,n); for (y=0;y<height;y++){ cin >> cho[y]; } int white,black; white=black=0; for (y=0;y<height;y++){ for (x=0;x<width;x++){ if (cho[y][x]=='.') continue; if (cho[y][x]=='w') white++; else black++; if ((y^x)&1) continue; if (0 < x && cho[y][x-1]!='.') bm.connect(x+y*width,x-1+y*width); if (0 < y && cho[y-1][x]!='.') bm.connect(x+y*width,x+(y-1)*width); if (width-1 > x && cho[y][x+1]!='.') bm.connect(x+y*width,x+1+y*width); if (height-1 > y && cho[y+1][x]!='.') bm.connect(x+y*width,x+(y+1)*width); } } set<Flow::Arrow> pairs; bm.solve_dinic(pairs); int np = pairs.size(); white -= np; black -= np; cout << ( (np*100) + (min(white,black)*10) + abs(white-black) ) << endl; return 0; }