0b26cb3f9a 2012-05-29        kinaba: #include <iostream>
0b26cb3f9a 2012-05-29        kinaba: #include <sstream>
0b26cb3f9a 2012-05-29        kinaba: #include <iomanip>
0b26cb3f9a 2012-05-29        kinaba: #include <vector>
0b26cb3f9a 2012-05-29        kinaba: #include <string>
0b26cb3f9a 2012-05-29        kinaba: #include <map>
0b26cb3f9a 2012-05-29        kinaba: #include <set>
0b26cb3f9a 2012-05-29        kinaba: #include <algorithm>
0b26cb3f9a 2012-05-29        kinaba: #include <numeric>
0b26cb3f9a 2012-05-29        kinaba: #include <iterator>
0b26cb3f9a 2012-05-29        kinaba: #include <functional>
0b26cb3f9a 2012-05-29        kinaba: #include <complex>
0b26cb3f9a 2012-05-29        kinaba: #include <queue>
0b26cb3f9a 2012-05-29        kinaba: #include <stack>
0b26cb3f9a 2012-05-29        kinaba: #include <cmath>
0b26cb3f9a 2012-05-29        kinaba: #include <cassert>
0b26cb3f9a 2012-05-29        kinaba: using namespace std;
0b26cb3f9a 2012-05-29        kinaba: typedef long long LL;
0b26cb3f9a 2012-05-29        kinaba: typedef long double LD;
0b26cb3f9a 2012-05-29        kinaba: typedef complex<LD> CMP;
0b26cb3f9a 2012-05-29        kinaba: 
0b26cb3f9a 2012-05-29        kinaba: class FlipGame { public:
0b26cb3f9a 2012-05-29        kinaba: 	int minOperations(vector <string> board)
0b26cb3f9a 2012-05-29        kinaba: 	{
0b26cb3f9a 2012-05-29        kinaba: 		int cnt = 0;
0b26cb3f9a 2012-05-29        kinaba: 		while( !all_zero(board) ) {
0b26cb3f9a 2012-05-29        kinaba: 			next(board);
0b26cb3f9a 2012-05-29        kinaba: 			++cnt;
0b26cb3f9a 2012-05-29        kinaba: 		}
0b26cb3f9a 2012-05-29        kinaba: 		return cnt;
0b26cb3f9a 2012-05-29        kinaba: 	}
0b26cb3f9a 2012-05-29        kinaba: 
0b26cb3f9a 2012-05-29        kinaba: 	bool all_zero(const vector <string>& board)
0b26cb3f9a 2012-05-29        kinaba: 	{
0b26cb3f9a 2012-05-29        kinaba: 		for(int i=0; i<board.size(); ++i)
0b26cb3f9a 2012-05-29        kinaba: 			if( count(board[i].begin(), board[i].end(), '0') != board[i].size() )
0b26cb3f9a 2012-05-29        kinaba: 				return false;
0b26cb3f9a 2012-05-29        kinaba: 		return true;
0b26cb3f9a 2012-05-29        kinaba: 	}
0b26cb3f9a 2012-05-29        kinaba: 
0b26cb3f9a 2012-05-29        kinaba: 	void next(vector<string>& board)
0b26cb3f9a 2012-05-29        kinaba: 	{
0b26cb3f9a 2012-05-29        kinaba: 		int X=0;
0b26cb3f9a 2012-05-29        kinaba: 		for(int y=0; y<board.size(); ++y)
0b26cb3f9a 2012-05-29        kinaba: 		{
0b26cb3f9a 2012-05-29        kinaba: 			int last1 = X-1;
0b26cb3f9a 2012-05-29        kinaba: 			for(int x=X; x<board[y].size(); ++x)
0b26cb3f9a 2012-05-29        kinaba: 				if( board[y][x] == '1' )
0b26cb3f9a 2012-05-29        kinaba: 					last1 = x;
0b26cb3f9a 2012-05-29        kinaba: 			X = last1+1;
0b26cb3f9a 2012-05-29        kinaba: 			for(int x=0; x<X; ++x)
0b26cb3f9a 2012-05-29        kinaba: 				board[y][x] = char('0'+'1'-board[y][x]);
0b26cb3f9a 2012-05-29        kinaba: 		}
0b26cb3f9a 2012-05-29        kinaba: 	}
0b26cb3f9a 2012-05-29        kinaba: };
0b26cb3f9a 2012-05-29        kinaba: 
0b26cb3f9a 2012-05-29        kinaba: // BEGIN CUT HERE
0b26cb3f9a 2012-05-29        kinaba: #include <ctime>
0b26cb3f9a 2012-05-29        kinaba: double start_time; string timer()
0b26cb3f9a 2012-05-29        kinaba:  { ostringstream os; os << " (" << int((clock()-start_time)/CLOCKS_PER_SEC*1000) << " msec)"; return os.str(); }
0b26cb3f9a 2012-05-29        kinaba: template<typename T> ostream& operator<<(ostream& os, const vector<T>& v)
0b26cb3f9a 2012-05-29        kinaba:  { os << "{ ";
0b26cb3f9a 2012-05-29        kinaba:    for(typename vector<T>::const_iterator it=v.begin(); it!=v.end(); ++it)
0b26cb3f9a 2012-05-29        kinaba:    os << '\"' << *it << '\"' << (it+1==v.end() ? "" : ", "); os << " }"; return os; }
0b26cb3f9a 2012-05-29        kinaba: void verify_case(const int& Expected, const int& Received) {
0b26cb3f9a 2012-05-29        kinaba:  bool ok = (Expected == Received);
0b26cb3f9a 2012-05-29        kinaba:  if(ok) cerr << "PASSED" << timer() << endl;  else { cerr << "FAILED" << timer() << endl;
0b26cb3f9a 2012-05-29        kinaba:  cerr << "\to: \"" << Expected << '\"' << endl << "\tx: \"" << Received << '\"' << endl; } }
0b26cb3f9a 2012-05-29        kinaba: #define CASE(N) {cerr << "Test Case #" << N << "..." << flush; start_time=clock();
0b26cb3f9a 2012-05-29        kinaba: #define END	 verify_case(_, FlipGame().minOperations(board));}
0b26cb3f9a 2012-05-29        kinaba: int main(){
0b26cb3f9a 2012-05-29        kinaba: 
0b26cb3f9a 2012-05-29        kinaba: CASE(0)
0b26cb3f9a 2012-05-29        kinaba: 	string board_[] = {"1000",
0b26cb3f9a 2012-05-29        kinaba:  "1110",
0b26cb3f9a 2012-05-29        kinaba:  "1111"};
0b26cb3f9a 2012-05-29        kinaba: 	  vector <string> board(board_, board_+sizeof(board_)/sizeof(*board_));
0b26cb3f9a 2012-05-29        kinaba: 	int _ = 1;
0b26cb3f9a 2012-05-29        kinaba: END
0b26cb3f9a 2012-05-29        kinaba: CASE(1)
0b26cb3f9a 2012-05-29        kinaba: 	string board_[] = {"1111",
0b26cb3f9a 2012-05-29        kinaba:  "1111",
0b26cb3f9a 2012-05-29        kinaba:  "1111"};
0b26cb3f9a 2012-05-29        kinaba: 	  vector <string> board(board_, board_+sizeof(board_)/sizeof(*board_));
0b26cb3f9a 2012-05-29        kinaba: 	int _ = 1;
0b26cb3f9a 2012-05-29        kinaba: END
0b26cb3f9a 2012-05-29        kinaba: CASE(2)
0b26cb3f9a 2012-05-29        kinaba: 	string board_[] = {"00",
0b26cb3f9a 2012-05-29        kinaba:  "00",
0b26cb3f9a 2012-05-29        kinaba:  "00"};
0b26cb3f9a 2012-05-29        kinaba: 	  vector <string> board(board_, board_+sizeof(board_)/sizeof(*board_));
0b26cb3f9a 2012-05-29        kinaba: 	int _ = 0;
0b26cb3f9a 2012-05-29        kinaba: END
0b26cb3f9a 2012-05-29        kinaba: CASE(3)
0b26cb3f9a 2012-05-29        kinaba: 	string board_[] = {
0b26cb3f9a 2012-05-29        kinaba:  "00000000",
0b26cb3f9a 2012-05-29        kinaba:  "00100000",
0b26cb3f9a 2012-05-29        kinaba:  "01000000",
0b26cb3f9a 2012-05-29        kinaba:  "00001000",
0b26cb3f9a 2012-05-29        kinaba:  "00000000"};
0b26cb3f9a 2012-05-29        kinaba: 	  vector <string> board(board_, board_+sizeof(board_)/sizeof(*board_));
0b26cb3f9a 2012-05-29        kinaba: 	int _ = 4;
0b26cb3f9a 2012-05-29        kinaba: END
0b26cb3f9a 2012-05-29        kinaba: CASE(4)
0b26cb3f9a 2012-05-29        kinaba: 	string board_[] = {"000000000000001100000000000000",
0b26cb3f9a 2012-05-29        kinaba:  "000000000000011110000000000000",
0b26cb3f9a 2012-05-29        kinaba:  "000000000000111111000000000000",
0b26cb3f9a 2012-05-29        kinaba:  "000000000001111111100000000000",
0b26cb3f9a 2012-05-29        kinaba:  "000000000011111111110000000000",
0b26cb3f9a 2012-05-29        kinaba:  "000000000111111111111000000000",
0b26cb3f9a 2012-05-29        kinaba:  "000000001100111111001100000000",
0b26cb3f9a 2012-05-29        kinaba:  "000000011000011110000110000000",
0b26cb3f9a 2012-05-29        kinaba:  "000000111100111111001111000000",
0b26cb3f9a 2012-05-29        kinaba:  "000001111111111111111111100000",
0b26cb3f9a 2012-05-29        kinaba:  "000011111111111111111111110000",
0b26cb3f9a 2012-05-29        kinaba:  "000111111111000000111111111000",
0b26cb3f9a 2012-05-29        kinaba:  "001111111111100001111111111100",
0b26cb3f9a 2012-05-29        kinaba:  "011111111111110011111111111110",
0b26cb3f9a 2012-05-29        kinaba:  "111111111111111111111111111111"};
0b26cb3f9a 2012-05-29        kinaba: 	  vector <string> board(board_, board_+sizeof(board_)/sizeof(*board_));
0b26cb3f9a 2012-05-29        kinaba: 	int _ = 29;
0b26cb3f9a 2012-05-29        kinaba: END
0b26cb3f9a 2012-05-29        kinaba: /*
0b26cb3f9a 2012-05-29        kinaba: CASE(5)
0b26cb3f9a 2012-05-29        kinaba: 	string board_[] = ;
0b26cb3f9a 2012-05-29        kinaba: 	  vector <string> board(board_, board_+sizeof(board_)/sizeof(*board_));
0b26cb3f9a 2012-05-29        kinaba: 	int _ = ;
0b26cb3f9a 2012-05-29        kinaba: END
0b26cb3f9a 2012-05-29        kinaba: CASE(6)
0b26cb3f9a 2012-05-29        kinaba: 	string board_[] = ;
0b26cb3f9a 2012-05-29        kinaba: 	  vector <string> board(board_, board_+sizeof(board_)/sizeof(*board_));
0b26cb3f9a 2012-05-29        kinaba: 	int _ = ;
0b26cb3f9a 2012-05-29        kinaba: END
0b26cb3f9a 2012-05-29        kinaba: */
0b26cb3f9a 2012-05-29        kinaba: }
0b26cb3f9a 2012-05-29        kinaba: // END CUT HERE