f33265e95c 2014-09-05        kinaba: #include <iostream>
f33265e95c 2014-09-05        kinaba: #include <sstream>
f33265e95c 2014-09-05        kinaba: #include <iomanip>
f33265e95c 2014-09-05        kinaba: #include <vector>
f33265e95c 2014-09-05        kinaba: #include <string>
f33265e95c 2014-09-05        kinaba: #include <map>
f33265e95c 2014-09-05        kinaba: #include <set>
f33265e95c 2014-09-05        kinaba: #include <algorithm>
f33265e95c 2014-09-05        kinaba: #include <numeric>
f33265e95c 2014-09-05        kinaba: #include <iterator>
f33265e95c 2014-09-05        kinaba: #include <functional>
f33265e95c 2014-09-05        kinaba: #include <complex>
f33265e95c 2014-09-05        kinaba: #include <queue>
f33265e95c 2014-09-05        kinaba: #include <stack>
f33265e95c 2014-09-05        kinaba: #include <cmath>
f33265e95c 2014-09-05        kinaba: #include <cassert>
f33265e95c 2014-09-05        kinaba: #include <tuple>
f33265e95c 2014-09-05        kinaba: using namespace std;
f33265e95c 2014-09-05        kinaba: typedef long long LL;
f33265e95c 2014-09-05        kinaba: typedef complex<double> CMP;
f33265e95c 2014-09-05        kinaba: 
f33265e95c 2014-09-05        kinaba: class TaroJiroGrid { public:
f33265e95c 2014-09-05        kinaba: 	int getNumber(vector <string> grid)
f33265e95c 2014-09-05        kinaba: 	{
f33265e95c 2014-09-05        kinaba: 		const int H = grid.size();
f33265e95c 2014-09-05        kinaba: 		const int W = grid[0].size();
f33265e95c 2014-09-05        kinaba: 		const string Change[2] = {string(W, 'B'), string(W, 'W')};
f33265e95c 2014-09-05        kinaba: 
f33265e95c 2014-09-05        kinaba: 		// 0
f33265e95c 2014-09-05        kinaba: 		if(ok(grid))
f33265e95c 2014-09-05        kinaba: 			return 0;
f33265e95c 2014-09-05        kinaba: 		// 1
f33265e95c 2014-09-05        kinaba: 		for(int y1=0; y1<H; ++y1) for(int c1=0; c1<2; ++c1) {
f33265e95c 2014-09-05        kinaba: 			auto t1 = grid[y1];
f33265e95c 2014-09-05        kinaba: 			grid[y1] = Change[c1];
f33265e95c 2014-09-05        kinaba: 			if(ok(grid)) return 1;
f33265e95c 2014-09-05        kinaba: 			grid[y1] = t1;
f33265e95c 2014-09-05        kinaba: 		}
f33265e95c 2014-09-05        kinaba: 		return 2;
f33265e95c 2014-09-05        kinaba: 	}
f33265e95c 2014-09-05        kinaba: 
f33265e95c 2014-09-05        kinaba: 	bool ok(const vector<string>& g)
f33265e95c 2014-09-05        kinaba: 	{
f33265e95c 2014-09-05        kinaba: 		const int H = g.size();
f33265e95c 2014-09-05        kinaba: 		const int W = g[0].size();
f33265e95c 2014-09-05        kinaba: 		for(int x=0; x<W; ++x) {
f33265e95c 2014-09-05        kinaba: 			int nb=0, nw=0;
f33265e95c 2014-09-05        kinaba: 			for(int y=0; y<H; ++y)
f33265e95c 2014-09-05        kinaba: 			{
f33265e95c 2014-09-05        kinaba: 				if(g[y][x]=='B') nb++, nw=0;
f33265e95c 2014-09-05        kinaba: 				else nb=0, nw++;
f33265e95c 2014-09-05        kinaba: 				if(nw>H/2 || nb>H/2)
f33265e95c 2014-09-05        kinaba: 					return false;
f33265e95c 2014-09-05        kinaba: 			}
f33265e95c 2014-09-05        kinaba: 		}
f33265e95c 2014-09-05        kinaba: 		return true;
f33265e95c 2014-09-05        kinaba: 	}
f33265e95c 2014-09-05        kinaba: };
f33265e95c 2014-09-05        kinaba: 
f33265e95c 2014-09-05        kinaba: // BEGIN CUT HERE
f33265e95c 2014-09-05        kinaba: #include <ctime>
f33265e95c 2014-09-05        kinaba: double start_time; string timer()
f33265e95c 2014-09-05        kinaba:  { ostringstream os; os << " (" << int((clock()-start_time)/CLOCKS_PER_SEC*1000) << " msec)"; return os.str(); }
f33265e95c 2014-09-05        kinaba: template<typename T> ostream& operator<<(ostream& os, const vector<T>& v)
f33265e95c 2014-09-05        kinaba:  { os << "{ ";
f33265e95c 2014-09-05        kinaba:    for(typename vector<T>::const_iterator it=v.begin(); it!=v.end(); ++it)
f33265e95c 2014-09-05        kinaba:    os << '\"' << *it << '\"' << (it+1==v.end() ? "" : ", "); os << " }"; return os; }
f33265e95c 2014-09-05        kinaba: void verify_case(const int& Expected, const int& Received) {
f33265e95c 2014-09-05        kinaba:  bool ok = (Expected == Received);
f33265e95c 2014-09-05        kinaba:  if(ok) cerr << "PASSED" << timer() << endl;  else { cerr << "FAILED" << timer() << endl;
f33265e95c 2014-09-05        kinaba:  cerr << "\to: \"" << Expected << '\"' << endl << "\tx: \"" << Received << '\"' << endl; } }
f33265e95c 2014-09-05        kinaba: #define CASE(N) {cerr << "Test Case #" << N << "..." << flush; start_time=clock();
f33265e95c 2014-09-05        kinaba: #define END	 verify_case(_, TaroJiroGrid().getNumber(grid));}
f33265e95c 2014-09-05        kinaba: int main(){
f33265e95c 2014-09-05        kinaba: 
f33265e95c 2014-09-05        kinaba: CASE(0)
f33265e95c 2014-09-05        kinaba: 	string grid_[] = {"WB",
f33265e95c 2014-09-05        kinaba:  "BB"};
f33265e95c 2014-09-05        kinaba: 	  vector <string> grid(grid_, grid_+sizeof(grid_)/sizeof(*grid_));
f33265e95c 2014-09-05        kinaba: 	int _ = 1;
f33265e95c 2014-09-05        kinaba: END
f33265e95c 2014-09-05        kinaba: CASE(1)
f33265e95c 2014-09-05        kinaba: 	string grid_[] = {"WB",
f33265e95c 2014-09-05        kinaba:  "WW"};
f33265e95c 2014-09-05        kinaba: 	  vector <string> grid(grid_, grid_+sizeof(grid_)/sizeof(*grid_));
f33265e95c 2014-09-05        kinaba: 	int _ = 1;
f33265e95c 2014-09-05        kinaba: END
f33265e95c 2014-09-05        kinaba: CASE(2)
f33265e95c 2014-09-05        kinaba: 	string grid_[] = {"WB",
f33265e95c 2014-09-05        kinaba:  "WB"};
f33265e95c 2014-09-05        kinaba: 	  vector <string> grid(grid_, grid_+sizeof(grid_)/sizeof(*grid_));
f33265e95c 2014-09-05        kinaba: 	int _ = 2;
f33265e95c 2014-09-05        kinaba: END
f33265e95c 2014-09-05        kinaba: CASE(3)
f33265e95c 2014-09-05        kinaba: 	string grid_[] = {"WBBW",
f33265e95c 2014-09-05        kinaba:  "WBWB",
f33265e95c 2014-09-05        kinaba:  "WWBB",
f33265e95c 2014-09-05        kinaba:  "BWWW"};
f33265e95c 2014-09-05        kinaba: 	  vector <string> grid(grid_, grid_+sizeof(grid_)/sizeof(*grid_));
f33265e95c 2014-09-05        kinaba: 	int _ = 2;
f33265e95c 2014-09-05        kinaba: END
f33265e95c 2014-09-05        kinaba: CASE(4)
f33265e95c 2014-09-05        kinaba: 	string grid_[] = {"WBBWBB",
f33265e95c 2014-09-05        kinaba:  "BBWBBW",
f33265e95c 2014-09-05        kinaba:  "WWBWBW",
f33265e95c 2014-09-05        kinaba:  "BWWBBB",
f33265e95c 2014-09-05        kinaba:  "WBWBBW",
f33265e95c 2014-09-05        kinaba:  "WWWBWB"};
f33265e95c 2014-09-05        kinaba: 	  vector <string> grid(grid_, grid_+sizeof(grid_)/sizeof(*grid_));
f33265e95c 2014-09-05        kinaba: 	int _ = 1;
f33265e95c 2014-09-05        kinaba: END
f33265e95c 2014-09-05        kinaba: /*
f33265e95c 2014-09-05        kinaba: CASE(5)
f33265e95c 2014-09-05        kinaba: 	string grid_[] = ;
f33265e95c 2014-09-05        kinaba: 	  vector <string> grid(grid_, grid_+sizeof(grid_)/sizeof(*grid_));
f33265e95c 2014-09-05        kinaba: 	int _ = ;
f33265e95c 2014-09-05        kinaba: END
f33265e95c 2014-09-05        kinaba: CASE(6)
f33265e95c 2014-09-05        kinaba: 	string grid_[] = ;
f33265e95c 2014-09-05        kinaba: 	  vector <string> grid(grid_, grid_+sizeof(grid_)/sizeof(*grid_));
f33265e95c 2014-09-05        kinaba: 	int _ = ;
f33265e95c 2014-09-05        kinaba: END
f33265e95c 2014-09-05        kinaba: */
f33265e95c 2014-09-05        kinaba: }
f33265e95c 2014-09-05        kinaba: // END CUT HERE