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4fd800b3a8 2011-02-23        kinaba: #include <iostream>
4fd800b3a8 2011-02-23        kinaba: #include <sstream>
4fd800b3a8 2011-02-23        kinaba: #include <iomanip>
4fd800b3a8 2011-02-23        kinaba: #include <vector>
4fd800b3a8 2011-02-23        kinaba: #include <string>
4fd800b3a8 2011-02-23        kinaba: #include <map>
4fd800b3a8 2011-02-23        kinaba: #include <set>
4fd800b3a8 2011-02-23        kinaba: #include <algorithm>
4fd800b3a8 2011-02-23        kinaba: #include <numeric>
4fd800b3a8 2011-02-23        kinaba: #include <iterator>
4fd800b3a8 2011-02-23        kinaba: #include <functional>
4fd800b3a8 2011-02-23        kinaba: #include <complex>
4fd800b3a8 2011-02-23        kinaba: #include <queue>
4fd800b3a8 2011-02-23        kinaba: #include <stack>
4fd800b3a8 2011-02-23        kinaba: #include <cmath>
4fd800b3a8 2011-02-23        kinaba: #include <cassert>
4fd800b3a8 2011-02-23        kinaba: #include <cstring>
4fd800b3a8 2011-02-23        kinaba: using namespace std;
4fd800b3a8 2011-02-23        kinaba: typedef long long LL;
4fd800b3a8 2011-02-23        kinaba: typedef complex<double> CMP;
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: class Painting { public:
4fd800b3a8 2011-02-23        kinaba: 	int largestBrush(vector <string> picture)
4fd800b3a8 2011-02-23        kinaba: 	{
4fd800b3a8 2011-02-23        kinaba: 		const int Y = picture.size();
4fd800b3a8 2011-02-23        kinaba: 		const int X = picture[0].size();
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: 		int best = 1;
4fd800b3a8 2011-02-23        kinaba: 		for(int S=2; S<=min(Y,X); ++S)
4fd800b3a8 2011-02-23        kinaba: 		{
4fd800b3a8 2011-02-23        kinaba: 			vector<string> duty = picture;
4fd800b3a8 2011-02-23        kinaba: 			for(int y=0; y+S<=Y; ++y)
4fd800b3a8 2011-02-23        kinaba: 			for(int x=0; x+S<=X; ++x)
4fd800b3a8 2011-02-23        kinaba: 				if( all<'B'>(picture, y, x, y+S, x+S) ) // SxS が全部黒ならここを左上にして塗れる
4fd800b3a8 2011-02-23        kinaba: 					fill<'W'>(duty, y, x, y+S, x+S); // 塗る
4fd800b3a8 2011-02-23        kinaba: 			if( all<'W'>(duty, 0, 0, Y, X) )
4fd800b3a8 2011-02-23        kinaba: 				best = max(best, S); // 全部塗れてたらベストスコア更新
4fd800b3a8 2011-02-23        kinaba: 		}
4fd800b3a8 2011-02-23        kinaba: 		return best;
4fd800b3a8 2011-02-23        kinaba: 	}
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: 	template<char color>
4fd800b3a8 2011-02-23        kinaba: 	bool all(const vector<string>& p, int ys, int xs, int ye, int xe)
4fd800b3a8 2011-02-23        kinaba: 	{
4fd800b3a8 2011-02-23        kinaba: 		int cnt = 0;
4fd800b3a8 2011-02-23        kinaba: 		for(int y=ys; y<ye; ++y)
4fd800b3a8 2011-02-23        kinaba: 		for(int x=xs; x<xe; ++x)
4fd800b3a8 2011-02-23        kinaba: 			cnt += (p[y][x]==color);
4fd800b3a8 2011-02-23        kinaba: 		return cnt == (ye-ys)*(xe-xs);
4fd800b3a8 2011-02-23        kinaba: 	}
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: 	template<char color>
4fd800b3a8 2011-02-23        kinaba: 	void fill(vector<string>& p, int ys, int xs, int ye, int xe)
4fd800b3a8 2011-02-23        kinaba: 	{
4fd800b3a8 2011-02-23        kinaba: 		for(int y=ys; y<ye; ++y)
4fd800b3a8 2011-02-23        kinaba: 		for(int x=xs; x<xe; ++x)
4fd800b3a8 2011-02-23        kinaba: 			p[y][x] = color;
4fd800b3a8 2011-02-23        kinaba: 	}
4fd800b3a8 2011-02-23        kinaba: };
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: // BEGIN CUT HERE
4fd800b3a8 2011-02-23        kinaba: #include <ctime>
4fd800b3a8 2011-02-23        kinaba: double start_time; string timer()
4fd800b3a8 2011-02-23        kinaba:  { ostringstream os; os << " (" << int((clock()-start_time)/CLOCKS_PER_SEC*1000) << " msec)"; return os.str(); }
4fd800b3a8 2011-02-23        kinaba: template<typename T> ostream& operator<<(ostream& os, const vector<T>& v)
4fd800b3a8 2011-02-23        kinaba:  { os << "{ ";
4fd800b3a8 2011-02-23        kinaba:    for(typename vector<T>::const_iterator it=v.begin(); it!=v.end(); ++it)
4fd800b3a8 2011-02-23        kinaba:    os << '\"' << *it << '\"' << (it+1==v.end() ? "" : ", "); os << " }"; return os; }
4fd800b3a8 2011-02-23        kinaba: void verify_case(const int& Expected, const int& Received) {
4fd800b3a8 2011-02-23        kinaba:  bool ok = (Expected == Received);
4fd800b3a8 2011-02-23        kinaba:  if(ok) cerr << "PASSED" << timer() << endl;  else { cerr << "FAILED" << timer() << endl;
4fd800b3a8 2011-02-23        kinaba:  cerr << "\to: \"" << Expected << '\"' << endl << "\tx: \"" << Received << '\"' << endl; } }
4fd800b3a8 2011-02-23        kinaba: #define CASE(N) {cerr << "Test Case #" << N << "..." << flush; start_time=clock();
4fd800b3a8 2011-02-23        kinaba: #define END	 verify_case(_, Painting().largestBrush(picture));}
4fd800b3a8 2011-02-23        kinaba: int main(){
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: CASE(0)
4fd800b3a8 2011-02-23        kinaba: 	string picture_[] = {"BBBB",
4fd800b3a8 2011-02-23        kinaba:  "BBBB",
4fd800b3a8 2011-02-23        kinaba:  "BBBB",
4fd800b3a8 2011-02-23        kinaba:  "BBBB"};
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> picture(picture_, picture_+sizeof(picture_)/sizeof(*picture_));
4fd800b3a8 2011-02-23        kinaba: 	int _ = 4;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(1)
4fd800b3a8 2011-02-23        kinaba: 	string picture_[] = {"BBBB",
4fd800b3a8 2011-02-23        kinaba:  "BWWB",
4fd800b3a8 2011-02-23        kinaba:  "BWWB",
4fd800b3a8 2011-02-23        kinaba:  "BBBB"};
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> picture(picture_, picture_+sizeof(picture_)/sizeof(*picture_));
4fd800b3a8 2011-02-23        kinaba: 	int _ = 1;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(2)
4fd800b3a8 2011-02-23        kinaba: 	string picture_[] = {
4fd800b3a8 2011-02-23        kinaba:  "WBBBBB",
4fd800b3a8 2011-02-23        kinaba:  "BBBBBB",
4fd800b3a8 2011-02-23        kinaba:  "BBBBBB",
4fd800b3a8 2011-02-23        kinaba:  "BBBBBB"}
4fd800b3a8 2011-02-23        kinaba: ;
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> picture(picture_, picture_+sizeof(picture_)/sizeof(*picture_));
4fd800b3a8 2011-02-23        kinaba: 	int _ = 3;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(3)
4fd800b3a8 2011-02-23        kinaba: 	string picture_[] = {"BBBB",
4fd800b3a8 2011-02-23        kinaba:  "BBBB",
4fd800b3a8 2011-02-23        kinaba:  "WBBB",
4fd800b3a8 2011-02-23        kinaba:  "BBBB",
4fd800b3a8 2011-02-23        kinaba:  "BBBB",
4fd800b3a8 2011-02-23        kinaba:  "BBBB"}
4fd800b3a8 2011-02-23        kinaba: ;
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> picture(picture_, picture_+sizeof(picture_)/sizeof(*picture_));
4fd800b3a8 2011-02-23        kinaba: 	int _ = 2;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(4)
4fd800b3a8 2011-02-23        kinaba: 	string picture_[] = {
4fd800b3a8 2011-02-23        kinaba:  "WBBBBBWWWWWWWWW",
4fd800b3a8 2011-02-23        kinaba:  "WBBBBBBWWWWWWWW",
4fd800b3a8 2011-02-23        kinaba:  "WBBBBBBBBBBBWWW",
4fd800b3a8 2011-02-23        kinaba:  "WBBBBBBBBBBBWWW",
4fd800b3a8 2011-02-23        kinaba:  "BBBBBBBBBBBBBBB",
4fd800b3a8 2011-02-23        kinaba:  "BBBBBBBBBBBBBBB",
4fd800b3a8 2011-02-23        kinaba:  "BBBBBBBBBBBBBBB",
4fd800b3a8 2011-02-23        kinaba:  "BBBBBBBBWWBBBBB",
4fd800b3a8 2011-02-23        kinaba:  "BBBBBBBBWBBBBBB",
4fd800b3a8 2011-02-23        kinaba:  "WBBBBBBBWBBBBBW",
4fd800b3a8 2011-02-23        kinaba:  "BBBBBBBWWBBBBBW",
4fd800b3a8 2011-02-23        kinaba:  "BBBBBBBWWBBBBBW",
4fd800b3a8 2011-02-23        kinaba:  "BBBBBBWWWBBBBBW",
4fd800b3a8 2011-02-23        kinaba:  "BBBBBWWWWWWWWWW",
4fd800b3a8 2011-02-23        kinaba:  "BBBBBWWWWWWWWWW"}
4fd800b3a8 2011-02-23        kinaba: ;
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> picture(picture_, picture_+sizeof(picture_)/sizeof(*picture_));
4fd800b3a8 2011-02-23        kinaba: 	int _ = 5;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(5)
4fd800b3a8 2011-02-23        kinaba: 	string picture_[] = {"B"};
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> picture(picture_, picture_+sizeof(picture_)/sizeof(*picture_));
4fd800b3a8 2011-02-23        kinaba: 	int _ = 1;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(6)
4fd800b3a8 2011-02-23        kinaba: 	string picture_[] = {"WWWWWWBWWWWW"};
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> picture(picture_, picture_+sizeof(picture_)/sizeof(*picture_));
4fd800b3a8 2011-02-23        kinaba: 	int _ = 1;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(7)
4fd800b3a8 2011-02-23        kinaba: 	string picture_[] = {
4fd800b3a8 2011-02-23        kinaba: "WWBBWW",
4fd800b3a8 2011-02-23        kinaba: "WBBBBW",
4fd800b3a8 2011-02-23        kinaba: "BBWWBB",
4fd800b3a8 2011-02-23        kinaba: "BBWWBB",
4fd800b3a8 2011-02-23        kinaba: "WBBBBW",
4fd800b3a8 2011-02-23        kinaba: "WWBBWW",
4fd800b3a8 2011-02-23        kinaba: };
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> picture(picture_, picture_+sizeof(picture_)/sizeof(*picture_));
4fd800b3a8 2011-02-23        kinaba: 	int _ = 1;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(8)
4fd800b3a8 2011-02-23        kinaba: 	string picture_[] = {
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: "WBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWBWB",
4fd800b3a8 2011-02-23        kinaba: };
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> picture(picture_, picture_+sizeof(picture_)/sizeof(*picture_));
4fd800b3a8 2011-02-23        kinaba: 	int _ = 1;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: }
4fd800b3a8 2011-02-23        kinaba: // END CUT HERE
Fossil version [8d758d3715] 2012-10-22 12:48:04