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9b65a86a4f 2011-05-03        kinaba: #include <iostream>
9b65a86a4f 2011-05-03        kinaba: #include <sstream>
9b65a86a4f 2011-05-03        kinaba: #include <iomanip>
9b65a86a4f 2011-05-03        kinaba: #include <vector>
9b65a86a4f 2011-05-03        kinaba: #include <string>
9b65a86a4f 2011-05-03        kinaba: #include <map>
9b65a86a4f 2011-05-03        kinaba: #include <set>
9b65a86a4f 2011-05-03        kinaba: #include <algorithm>
9b65a86a4f 2011-05-03        kinaba: #include <numeric>
9b65a86a4f 2011-05-03        kinaba: #include <iterator>
9b65a86a4f 2011-05-03        kinaba: #include <functional>
9b65a86a4f 2011-05-03        kinaba: #include <complex>
9b65a86a4f 2011-05-03        kinaba: #include <queue>
9b65a86a4f 2011-05-03        kinaba: #include <stack>
9b65a86a4f 2011-05-03        kinaba: #include <cmath>
9b65a86a4f 2011-05-03        kinaba: #include <cassert>
9b65a86a4f 2011-05-03        kinaba: #include <cstring>
9b65a86a4f 2011-05-03        kinaba: using namespace std;
9b65a86a4f 2011-05-03        kinaba: typedef long long LL;
9b65a86a4f 2011-05-03        kinaba: typedef complex<double> CMP;
9b65a86a4f 2011-05-03        kinaba: 
9b65a86a4f 2011-05-03        kinaba: class KingdomXCitiesandVillages { public:
9b65a86a4f 2011-05-03        kinaba: 	double determineLength(vector <int> cityX, vector <int> cityY, vector <int> villageX, vector <int> villageY)
9b65a86a4f 2011-05-03        kinaba: 	{
9b65a86a4f 2011-05-03        kinaba: 		const int C = cityX.size();
9b65a86a4f 2011-05-03        kinaba: 		const int V = villageX.size();
9b65a86a4f 2011-05-03        kinaba: 		double answer = 0.0;
9b65a86a4f 2011-05-03        kinaba: 
9b65a86a4f 2011-05-03        kinaba: 		for(int i=0; i<V; ++i)
9b65a86a4f 2011-05-03        kinaba: 		{
9b65a86a4f 2011-05-03        kinaba: 			double nc = 1e+30;
9b65a86a4f 2011-05-03        kinaba: 			for(int j=0; j<C; ++j)
9b65a86a4f 2011-05-03        kinaba: 				nc = min(nc, distance(villageX[i], villageY[i], cityX[j], cityY[j]));
9b65a86a4f 2011-05-03        kinaba: 
9b65a86a4f 2011-05-03        kinaba: 			vector<double> d;
9b65a86a4f 2011-05-03        kinaba: 			for(int j=0; j<V; ++j)
9b65a86a4f 2011-05-03        kinaba: 				if( j != i )
9b65a86a4f 2011-05-03        kinaba: 					d.push_back( distance(villageX[i], villageY[i], villageX[j], villageY[j]) );
9b65a86a4f 2011-05-03        kinaba: 			sort(d.begin(), d.end());
9b65a86a4f 2011-05-03        kinaba: 
9b65a86a4f 2011-05-03        kinaba: 			double prob = 1.0;
9b65a86a4f 2011-05-03        kinaba: 			for(int j=0; j<d.size() && d[j]<nc; ++j)
9b65a86a4f 2011-05-03        kinaba: 			{
9b65a86a4f 2011-05-03        kinaba: 				double p = 1.0 / (j+1) / (j+2);
9b65a86a4f 2011-05-03        kinaba: 				answer += p * d[j];
9b65a86a4f 2011-05-03        kinaba: 				prob -= p;
9b65a86a4f 2011-05-03        kinaba: 			}
9b65a86a4f 2011-05-03        kinaba: 			answer += prob * nc;
9b65a86a4f 2011-05-03        kinaba: 		}
9b65a86a4f 2011-05-03        kinaba: 		return answer;
9b65a86a4f 2011-05-03        kinaba: 	}
9b65a86a4f 2011-05-03        kinaba: 
9b65a86a4f 2011-05-03        kinaba: 	static double distance(double x, double y, double X, double Y)
9b65a86a4f 2011-05-03        kinaba: 	{
9b65a86a4f 2011-05-03        kinaba: 		return hypot(x-X, y-Y);
9b65a86a4f 2011-05-03        kinaba: 	}
9b65a86a4f 2011-05-03        kinaba: };
9b65a86a4f 2011-05-03        kinaba: 
9b65a86a4f 2011-05-03        kinaba: // BEGIN CUT HERE
9b65a86a4f 2011-05-03        kinaba: #include <ctime>
9b65a86a4f 2011-05-03        kinaba: double start_time; string timer()
9b65a86a4f 2011-05-03        kinaba:  { ostringstream os; os << " (" << int((clock()-start_time)/CLOCKS_PER_SEC*1000) << " msec)"; return os.str(); }
9b65a86a4f 2011-05-03        kinaba: template<typename T> ostream& operator<<(ostream& os, const vector<T>& v)
9b65a86a4f 2011-05-03        kinaba:  { os << "{ ";
9b65a86a4f 2011-05-03        kinaba:    for(typename vector<T>::const_iterator it=v.begin(); it!=v.end(); ++it)
9b65a86a4f 2011-05-03        kinaba:    os << '\"' << *it << '\"' << (it+1==v.end() ? "" : ", "); os << " }"; return os; }
9b65a86a4f 2011-05-03        kinaba: void verify_case(const double& Expected, const double& Received) {
9b65a86a4f 2011-05-03        kinaba:  bool ok = (abs(Expected - Received) < 1e-9);
9b65a86a4f 2011-05-03        kinaba:  if(ok) cerr << "PASSED" << timer() << endl;  else { cerr << "FAILED" << timer() << endl;
9b65a86a4f 2011-05-03        kinaba:  cerr << "\to: \"" << Expected << '\"' << endl << "\tx: \"" << Received << '\"' << endl; } }
9b65a86a4f 2011-05-03        kinaba: #define CASE(N) {cerr << "Test Case #" << N << "..." << flush; start_time=clock();
9b65a86a4f 2011-05-03        kinaba: #define END	 verify_case(_, KingdomXCitiesandVillages().determineLength(cityX, cityY, villageX, villageY));}
9b65a86a4f 2011-05-03        kinaba: int main(){
9b65a86a4f 2011-05-03        kinaba: 
9b65a86a4f 2011-05-03        kinaba: CASE(0)
9b65a86a4f 2011-05-03        kinaba: 	int cityX_[] = {3};
9b65a86a4f 2011-05-03        kinaba: 	  vector <int> cityX(cityX_, cityX_+sizeof(cityX_)/sizeof(*cityX_));
9b65a86a4f 2011-05-03        kinaba: 	int cityY_[] = {0};
9b65a86a4f 2011-05-03        kinaba: 	  vector <int> cityY(cityY_, cityY_+sizeof(cityY_)/sizeof(*cityY_));
9b65a86a4f 2011-05-03        kinaba: 	int villageX_[] = {3,3};
9b65a86a4f 2011-05-03        kinaba: 	  vector <int> villageX(villageX_, villageX_+sizeof(villageX_)/sizeof(*villageX_));
9b65a86a4f 2011-05-03        kinaba: 	int villageY_[] = {2,1};
9b65a86a4f 2011-05-03        kinaba: 	  vector <int> villageY(villageY_, villageY_+sizeof(villageY_)/sizeof(*villageY_));
9b65a86a4f 2011-05-03        kinaba: 	double _ = 2.5;
9b65a86a4f 2011-05-03        kinaba: END
9b65a86a4f 2011-05-03        kinaba: CASE(1)
9b65a86a4f 2011-05-03        kinaba: 	int cityX_[] = {1,4,7,10};
9b65a86a4f 2011-05-03        kinaba: 	  vector <int> cityX(cityX_, cityX_+sizeof(cityX_)/sizeof(*cityX_));
9b65a86a4f 2011-05-03        kinaba: 	int cityY_[] = {5,5,5,5};
9b65a86a4f 2011-05-03        kinaba: 	  vector <int> cityY(cityY_, cityY_+sizeof(cityY_)/sizeof(*cityY_));
9b65a86a4f 2011-05-03        kinaba: 	int villageX_[] = {1,4,7,10};
9b65a86a4f 2011-05-03        kinaba: 	  vector <int> villageX(villageX_, villageX_+sizeof(villageX_)/sizeof(*villageX_));
9b65a86a4f 2011-05-03        kinaba: 	int villageY_[] = {4,4,4,4};
9b65a86a4f 2011-05-03        kinaba: 	  vector <int> villageY(villageY_, villageY_+sizeof(villageY_)/sizeof(*villageY_));
9b65a86a4f 2011-05-03        kinaba: 	double _ = 4.0;
9b65a86a4f 2011-05-03        kinaba: END
9b65a86a4f 2011-05-03        kinaba: CASE(2)
9b65a86a4f 2011-05-03        kinaba: 	int cityX_[] = {1,2,3};
9b65a86a4f 2011-05-03        kinaba: 	  vector <int> cityX(cityX_, cityX_+sizeof(cityX_)/sizeof(*cityX_));
9b65a86a4f 2011-05-03        kinaba: 	int cityY_[] = {4,4,4};
9b65a86a4f 2011-05-03        kinaba: 	  vector <int> cityY(cityY_, cityY_+sizeof(cityY_)/sizeof(*cityY_));
9b65a86a4f 2011-05-03        kinaba: 	int villageX_[] = {4,5,6};
9b65a86a4f 2011-05-03        kinaba: 	  vector <int> villageX(villageX_, villageX_+sizeof(villageX_)/sizeof(*villageX_));
9b65a86a4f 2011-05-03        kinaba: 	int villageY_[] = {4,4,4};
9b65a86a4f 2011-05-03        kinaba: 	  vector <int> villageY(villageY_, villageY_+sizeof(villageY_)/sizeof(*villageY_));
9b65a86a4f 2011-05-03        kinaba: 	double _ = 4.166666666666667;
9b65a86a4f 2011-05-03        kinaba: END
9b65a86a4f 2011-05-03        kinaba: CASE(3)
9b65a86a4f 2011-05-03        kinaba: int cityX_[] = {1};
9b65a86a4f 2011-05-03        kinaba: 	  vector <int> cityX(cityX_, cityX_+sizeof(cityX_)/sizeof(*cityX_));
9b65a86a4f 2011-05-03        kinaba: 	  int cityY_[] = {1};
9b65a86a4f 2011-05-03        kinaba: 	  vector <int> cityY(cityY_, cityY_+sizeof(cityY_)/sizeof(*cityY_));
9b65a86a4f 2011-05-03        kinaba: 	  int villageX_[] = {2};
9b65a86a4f 2011-05-03        kinaba: 	  vector <int> villageX(villageX_, villageX_+sizeof(villageX_)/sizeof(*villageX_));
9b65a86a4f 2011-05-03        kinaba: 	  int villageY_[] = {1};
9b65a86a4f 2011-05-03        kinaba: 	  vector <int> villageY(villageY_, villageY_+sizeof(villageY_)/sizeof(*villageY_));
9b65a86a4f 2011-05-03        kinaba: 	double _ = 1;
9b65a86a4f 2011-05-03        kinaba: END
9b65a86a4f 2011-05-03        kinaba: /*
9b65a86a4f 2011-05-03        kinaba: CASE(4)
9b65a86a4f 2011-05-03        kinaba: 	int cityX_[] = ;
9b65a86a4f 2011-05-03        kinaba: 	  vector <int> cityX(cityX_, cityX_+sizeof(cityX_)/sizeof(*cityX_));
9b65a86a4f 2011-05-03        kinaba: 	int cityY_[] = ;
9b65a86a4f 2011-05-03        kinaba: 	  vector <int> cityY(cityY_, cityY_+sizeof(cityY_)/sizeof(*cityY_));
9b65a86a4f 2011-05-03        kinaba: 	int villageX_[] = ;
9b65a86a4f 2011-05-03        kinaba: 	  vector <int> villageX(villageX_, villageX_+sizeof(villageX_)/sizeof(*villageX_));
9b65a86a4f 2011-05-03        kinaba: 	int villageY_[] = ;
9b65a86a4f 2011-05-03        kinaba: 	  vector <int> villageY(villageY_, villageY_+sizeof(villageY_)/sizeof(*villageY_));
9b65a86a4f 2011-05-03        kinaba: 	double _ = ;
9b65a86a4f 2011-05-03        kinaba: END
9b65a86a4f 2011-05-03        kinaba: */
9b65a86a4f 2011-05-03        kinaba: }
9b65a86a4f 2011-05-03        kinaba: // END CUT HERE
Fossil version [8d758d3715] 2012-10-22 12:48:04