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: template<typename To, typename From>
4fd800b3a8 2011-02-23        kinaba: 	To lexical_cast( const From& f )
4fd800b3a8 2011-02-23        kinaba: 	{
4fd800b3a8 2011-02-23        kinaba: 		stringstream ss;
4fd800b3a8 2011-02-23        kinaba: 		ss << f;
4fd800b3a8 2011-02-23        kinaba: 		To t;
4fd800b3a8 2011-02-23        kinaba: 		ss >> t;
4fd800b3a8 2011-02-23        kinaba: 		return t;
4fd800b3a8 2011-02-23        kinaba: 	}
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: class RailwayTickets { public:
4fd800b3a8 2011-02-23        kinaba: 	int minRejects(vector <string> travel, int seats)
4fd800b3a8 2011-02-23        kinaba: 	{
4fd800b3a8 2011-02-23        kinaba: 		typedef pair<bool,int> event; // [true,A  --- false,B)
4fd800b3a8 2011-02-23        kinaba: 		vector<event> evs;
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: 		for(int i=0; i<travel.size(); ++i)
4fd800b3a8 2011-02-23        kinaba: 		{
4fd800b3a8 2011-02-23        kinaba: 			stringstream ss(travel[i]);
4fd800b3a8 2011-02-23        kinaba: 			for(string s; ss>>s; )
4fd800b3a8 2011-02-23        kinaba: 			{
4fd800b3a8 2011-02-23        kinaba: 				int k = s.find('-');
4fd800b3a8 2011-02-23        kinaba: 				int A = lexical_cast<int>( s.substr(0, k) );
4fd800b3a8 2011-02-23        kinaba: 				int B = lexical_cast<int>( s.substr(k+1) );
4fd800b3a8 2011-02-23        kinaba: 				evs.push_back( event(true,A) );
4fd800b3a8 2011-02-23        kinaba: 				evs.push_back( event(false,B) );
4fd800b3a8 2011-02-23        kinaba: 			}
4fd800b3a8 2011-02-23        kinaba: 		}
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: 		sort( evs.begin(), evs.end() );
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: 		vector< vector<int> > minDeny(evs.size()+1, vector<int>(seats+1));
4fd800b3a8 2011-02-23        kinaba: 		for(int ti=evs.size()-1; ti>=0; --ti)
4fd800b3a8 2011-02-23        kinaba: 			for(int si=0; si<=seats; ++si)
4fd800b3a8 2011-02-23        kinaba: 				if( evs[ti].first )
4fd800b3a8 2011-02-23        kinaba: 				{
4fd800b3a8 2011-02-23        kinaba: 					if( si==0 )
4fd800b3a8 2011-02-23        kinaba: 						minDeny[ti][si] = minDeny[ti+1][si]+1;
4fd800b3a8 2011-02-23        kinaba: 					else
4fd800b3a8 2011-02-23        kinaba: 						minDeny[ti][si] = min( minDeny[ti+1][si]+1, minDeny[ti+1][si-1] );
4fd800b3a8 2011-02-23        kinaba: 				}
4fd800b3a8 2011-02-23        kinaba: 				else
4fd800b3a8 2011-02-23        kinaba: 				{
4fd800b3a8 2011-02-23        kinaba: 					minDeny[ti][si] = minDeny[ti+1][si+1];
4fd800b3a8 2011-02-23        kinaba: 				}
4fd800b3a8 2011-02-23        kinaba: 		return minDeny[0][seats];
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(_, RailwayTickets().minRejects(travel, seats));}
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 travel_[] = {"1-3 3-5",
4fd800b3a8 2011-02-23        kinaba:  "2-4 4-6",
4fd800b3a8 2011-02-23        kinaba:  "1-2 2-3 3-4 4-5"};
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> travel(travel_, travel_+sizeof(travel_)/sizeof(*travel_));
4fd800b3a8 2011-02-23        kinaba: 	int seats = 2;
4fd800b3a8 2011-02-23        kinaba: 	int _ = 2;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(1)
4fd800b3a8 2011-02-23        kinaba: 	string travel_[] = {"1-10000","2-10000","1-9999","2-9999","5000-5001"};
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> travel(travel_, travel_+sizeof(travel_)/sizeof(*travel_));
4fd800b3a8 2011-02-23        kinaba: 	int seats = 3;
4fd800b3a8 2011-02-23        kinaba: 	int _ = 2;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(2)
4fd800b3a8 2011-02-23        kinaba: 	string travel_[] = {"1-2 2-5 2-8 234-236 56-878 6-34",
4fd800b3a8 2011-02-23        kinaba:  "234-776 3242-8000 999-1000 3-14",
4fd800b3a8 2011-02-23        kinaba:  "121-122 435-3455 123-987 77-999"};
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> travel(travel_, travel_+sizeof(travel_)/sizeof(*travel_));
4fd800b3a8 2011-02-23        kinaba: 	int seats = 1000;
4fd800b3a8 2011-02-23        kinaba: 	int _ = 0;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(3)
4fd800b3a8 2011-02-23        kinaba: 	string travel_[] = {"1-2 2-3 3-4 4-5 5-6 6-7 1-3 2-7 1-2 1-4"};
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> travel(travel_, travel_+sizeof(travel_)/sizeof(*travel_));
4fd800b3a8 2011-02-23        kinaba: 	int seats = 1;
4fd800b3a8 2011-02-23        kinaba: 	int _ = 4;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(4)
4fd800b3a8 2011-02-23        kinaba: 	string travel_[] = {"1-2","1-2"};
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> travel(travel_, travel_+sizeof(travel_)/sizeof(*travel_));
4fd800b3a8 2011-02-23        kinaba: 	int seats = 1;
4fd800b3a8 2011-02-23        kinaba: 	int _ = 1;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(5)
4fd800b3a8 2011-02-23        kinaba: 	string travel_[] = {"1-2"};
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> travel(travel_, travel_+sizeof(travel_)/sizeof(*travel_));
4fd800b3a8 2011-02-23        kinaba: 	int seats = 1;
4fd800b3a8 2011-02-23        kinaba: 	int _ = 0;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: }
4fd800b3a8 2011-02-23        kinaba: // END CUT HERE