結果

問題 No.421 しろくろチョコレート
ユーザー 小指が強い人
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
このコードへのチャレンジ
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ファイルパターン 結果
other AC * 65
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ソースコード

diff #
プレゼンテーションモードにする

#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 matching
matching.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;
}
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