結果
問題 | No.421 しろくろチョコレート |
ユーザー |
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提出日時 | 2016-09-20 02:10:02 |
言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
結果 |
AC
|
実行時間 | 3 ms / 2,000 ms |
コード長 | 4,036 bytes |
コンパイル時間 | 2,095 ms |
コンパイル使用メモリ | 182,500 KB |
実行使用メモリ | 6,948 KB |
最終ジャッジ日時 | 2024-09-23 07:09:16 |
合計ジャッジ時間 | 3,722 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge1 |
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ファイルパターン | 結果 |
---|---|
other | AC * 65 |
ソースコード
#include "bits/stdc++.h"using namespace std;typedef long long ll;typedef unsigned long long ull;typedef vector<int> veci;typedef vector<ll> vecll;typedef vector<string> vecs;template<class T,class U> using Hash=unordered_map<T,U>;#define REP(i, a, n) for(ll i = a; i < (ll)(n); i++)#define RREP(i, a, n) for(ll i = n-1; i >= (ll)(a); i--)#define rep(i, n) REP(i, 0, n)#define rrep(i, n) RREP(i, 0, n)#define MD 1000000007#define _SPLIT " "template<class T> T read(){T a;cin >> a;return a;}template<class T> void read(T& a){cin >> a;}template<class T,class ...Args> void read(T& a, Args&... args){cin >> a; read(args...);}template<class T> void rarr(T a, int n){for(int i = 0; i < n; i++) {cin >> a[i];}}template<class T> void write(T a){cout << setprecision(12) << a << endl;}template<class T,class ...Args> void write(T a, Args... args){cout << setprecision(12) << a << _SPLIT; write(args...);}template<class T> void warr(vector<T> a, const char* c = " "){cout << a[0];for(int i = 1; i < (int)a.size(); i++)cout << c << a[i];cout << endl;;}template<class T> void warr(T a, int n, const char* c = " "){cout << a[0];for(int i = 1; i < n; i++)cout << c << a[i];cout << endl;}void split(string s, string delim, veci& result){result.clear();string::size_type pos = 0;while(pos != string::npos){string::size_type p = s.find(delim, pos);if(p == string::npos){result.push_back(atoi(s.substr(pos).data()));break;}else {result.push_back(atoi(s.substr(pos, p - pos).data()));}pos = p + delim.size();}}void split(string s, string delim, vecs& result){result.clear();string::size_type pos = 0;while(pos != string::npos){string::size_type p = s.find(delim, pos);if(p == string::npos){result.push_back(s.substr(pos));break;}else {result.push_back(s.substr(pos, p - pos));}pos = p + delim.size();}}ll gcd(ll a, ll b){while(true){ll k = a % b;if(k == 0)return b;a = b;b = k;}}ll comb(ll n, ll m){ll p=1;m=min(m,n-m);for(ll i=1;i<=m;i++){p*=n-i+1;p/=i;}return p;}typedef int Weight;struct Edge {int src, dst;Weight weight;Edge(int src, int dst, Weight weight=1) :src(src), dst(dst), weight(weight) { }};bool operator < (const Edge &e, const Edge &f) {return e.weight != f.weight ? e.weight > f.weight : // !!INVERSE!!e.src != f.src ? e.src < f.src : e.dst < f.dst;}typedef vector<Edge> Edges;typedef vector<Edges> Graph;typedef vector<Weight> Array;typedef vector<Array> Matrix;bool augment(const Graph& g, int u,vector<int>& matchTo, vector<bool>& visited) {if (u < 0) return true;for(auto& e:g[u]) if (!visited[e.dst]) {visited[e.dst] = true;if (augment(g, matchTo[e.dst], matchTo, visited)) {matchTo[e.src] = e.dst;matchTo[e.dst] = e.src;return true;}}return false;}int bipartiteMatching(const Graph& g, int L, Edges& matching) {const int n = g.size();vector<int> matchTo(n, -1);int match = 0;rep(u, L) {vector<bool> visited(n);if (augment(g, u, matchTo, visited)) ++match;}rep(u, L) if (matchTo[u] >= 0) // make explicit matchingmatching.push_back( Edge(u, matchTo[u]) );return match;}int dx[]={1,0,-1,0};int dy[]={0,1,0,-1};int main(void){int n,m;string s[50];int sn[50][50]={0};read(n,m);rarr(s,n);int sw=0,sb=0;rep(i,n)rep(j,m){if(s[i][j]=='w')sn[i][j]=sw++;}rep(i,n)rep(j,m){if(s[i][j]=='b')sn[i][j]=sw+sb,sb++;}Graph g(sw+sb);rep(i,n)rep(j,m){if(s[i][j]=='.')continue;int src=sn[i][j];char c=s[i][j];rep(k,4){int cx=j+dx[k];int cy=i+dy[k];if(cx<0||cx>=m||cy<0||cy>=n)continue;if(s[cy][cx]=='.'||s[cy][cx]==c)continue;g[src].push_back(Edge(src,sn[cy][cx]));}}Edges t;int res=0;int m_num=bipartiteMatching(g,sw,t);sw-=m_num;sb-=m_num;res+=m_num*100;int cwb=min(sw,sb);sw-=cwb;sb-=cwb;res+=cwb*10;res+=max(sw,sb);write(res);return 0;}