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 CarolsSinging {
4fd800b3a8 2011-02-23        kinaba: public:
4fd800b3a8 2011-02-23        kinaba: 	int choose(vector <string> lyrics)
4fd800b3a8 2011-02-23        kinaba: 	{
4fd800b3a8 2011-02-23        kinaba: 		int nP = lyrics.size();
4fd800b3a8 2011-02-23        kinaba: 		int nS = lyrics[0].size();
4fd800b3a8 2011-02-23        kinaba: 		vector<int> people_who_know_the_song(nS);
4fd800b3a8 2011-02-23        kinaba: 		for(int s=0; s<nS; ++s)
4fd800b3a8 2011-02-23        kinaba: 			for(int p=0; p<nP; ++p)
4fd800b3a8 2011-02-23        kinaba: 				people_who_know_the_song[s] |= (lyrics[p][s]=='Y')<<p;
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: 		int minPop = nS;
4fd800b3a8 2011-02-23        kinaba: 		for(int m=1; m<(1<<nS); ++m)
4fd800b3a8 2011-02-23        kinaba: 		{
4fd800b3a8 2011-02-23        kinaba: 			int canSing = 0;
4fd800b3a8 2011-02-23        kinaba: 			for(int s=0; (1<<s)<=m; ++s)
4fd800b3a8 2011-02-23        kinaba: 				if( (1<<s) & m )
4fd800b3a8 2011-02-23        kinaba: 					canSing |= people_who_know_the_song[s];
4fd800b3a8 2011-02-23        kinaba: 			if( canSing == (1<<nP)-1 )
4fd800b3a8 2011-02-23        kinaba: 				minPop = min(minPop, __builtin_popcount(m));
4fd800b3a8 2011-02-23        kinaba: 		}
4fd800b3a8 2011-02-23        kinaba: 		return minPop;
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() { ostringstream os; os << " (" << int((clock()-start_time)/CLOCKS_PER_SEC*1000) << " msec)"; return os.str(); }
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: template <typename T> string print_array(const vector<T> &V) { ostringstream os; os << "{ "; for (typename vector<T>::const_iterator iter = V.begin(); iter != V.end(); ++iter) os << '\"' << *iter << "\","; os << " }"; return os.str(); }
4fd800b3a8 2011-02-23        kinaba: int verify_case(const int &Expected, const int &Received) { if (Expected == Received) cerr << "PASSED" << timer() << endl; else { cerr << "FAILED" << timer() << endl; cerr << "\tExpected: \"" << Expected << '\"' << endl; cerr << "\tReceived: \"" << Received << '\"' << endl; } return 0;}
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: template<int N> struct Case_ { Case_(){start_time=clock();} };
4fd800b3a8 2011-02-23        kinaba: char Test_(...);
4fd800b3a8 2011-02-23        kinaba: int Test_(Case_<0>) {
4fd800b3a8 2011-02-23        kinaba: 	string lyrics_[] = {"YN","NY"};
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> lyrics(lyrics_, lyrics_+sizeof(lyrics_)/sizeof(*lyrics_));
4fd800b3a8 2011-02-23        kinaba: 	int RetVal = 2;
4fd800b3a8 2011-02-23        kinaba: 	return verify_case(RetVal, CarolsSinging().choose(lyrics)); }
4fd800b3a8 2011-02-23        kinaba: int Test_(Case_<1>) {
4fd800b3a8 2011-02-23        kinaba: 	string lyrics_[] = {"YN","YY","YN"};
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> lyrics(lyrics_, lyrics_+sizeof(lyrics_)/sizeof(*lyrics_));
4fd800b3a8 2011-02-23        kinaba: 	int RetVal = 1;
4fd800b3a8 2011-02-23        kinaba: 	return verify_case(RetVal, CarolsSinging().choose(lyrics)); }
4fd800b3a8 2011-02-23        kinaba: int Test_(Case_<2>) {
4fd800b3a8 2011-02-23        kinaba: 	string lyrics_[] = {"YNN","YNY","YNY","NYY","NYY","NYN"};
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> lyrics(lyrics_, lyrics_+sizeof(lyrics_)/sizeof(*lyrics_));
4fd800b3a8 2011-02-23        kinaba: 	int RetVal = 2;
4fd800b3a8 2011-02-23        kinaba: 	return verify_case(RetVal, CarolsSinging().choose(lyrics)); }
4fd800b3a8 2011-02-23        kinaba: int Test_(Case_<3>) {
4fd800b3a8 2011-02-23        kinaba: 	string lyrics_[] = {"YNNYYY","YYNYYY","YNNYYN","NYYNNN","YYYNNN","YYYNNY","NYYYYY","NYNYYY","NNNNYY",
4fd800b3a8 2011-02-23        kinaba:  "YYYYYY","YNNNNN","YYYYNY","YYNNNN","NNYYYN","NNNNYY","YYYNNN","NYNNYN","YNNYYN",
4fd800b3a8 2011-02-23        kinaba:  "YYNNNY","NYYNNY","NNYYYN","YNYYYN","NNNYNY","YYYYNN","YYNYNN","NYYNYY","YYNYYN"};
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> lyrics(lyrics_, lyrics_+sizeof(lyrics_)/sizeof(*lyrics_));
4fd800b3a8 2011-02-23        kinaba: 	int RetVal = 4;
4fd800b3a8 2011-02-23        kinaba: 	return verify_case(RetVal, CarolsSinging().choose(lyrics)); }
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: template<int N> void Run_() { cerr << "Test Case #" << N << "..." << flush; Test_(Case_<N>()); Run_<sizeof(Test_(Case_<N+1>()))==1 ? -1 : N+1>(); }
4fd800b3a8 2011-02-23        kinaba: template<>      void Run_<-1>() {}
4fd800b3a8 2011-02-23        kinaba: int main() { Run_<0>(); }
4fd800b3a8 2011-02-23        kinaba: // END CUT HERE
4fd800b3a8 2011-02-23        kinaba: