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 Nisoku { public:
4fd800b3a8 2011-02-23        kinaba:    double theMax(vector <double> cards)
4fd800b3a8 2011-02-23        kinaba:    {
4fd800b3a8 2011-02-23        kinaba:       sort(cards.begin(), cards.end());
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba:       double ans = 0.0;
4fd800b3a8 2011-02-23        kinaba:       for(int i=0; 2*i<=cards.size(); ++i)
4fd800b3a8 2011-02-23        kinaba:          ans = max(ans,
4fd800b3a8 2011-02-23        kinaba:             accumulate(cards.begin()+2*i, cards.end(),
4fd800b3a8 2011-02-23        kinaba:                inner_product( cards.begin(), cards.begin()+i,
4fd800b3a8 2011-02-23        kinaba:                               cards.rend()-2*i,
4fd800b3a8 2011-02-23        kinaba:                               1.0, multiplies<double>(), plus<double>() ),
4fd800b3a8 2011-02-23        kinaba:                multiplies<double>()
4fd800b3a8 2011-02-23        kinaba:             )
4fd800b3a8 2011-02-23        kinaba:          );
4fd800b3a8 2011-02-23        kinaba:       return ans;
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 double& Expected, const double& Received) {
4fd800b3a8 2011-02-23        kinaba:  bool ok = (abs(Expected - Received) < 1e-9);
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(_, Nisoku().theMax(cards));}
4fd800b3a8 2011-02-23        kinaba: int main(){
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: CASE(0)
4fd800b3a8 2011-02-23        kinaba:    double cards_[] = {5, 8};
4fd800b3a8 2011-02-23        kinaba:      vector <double> cards(cards_, cards_+sizeof(cards_)/sizeof(*cards_));
4fd800b3a8 2011-02-23        kinaba:    double _ = 40.0;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(1)
4fd800b3a8 2011-02-23        kinaba:    double cards_[] = {1.5, 1.8};
4fd800b3a8 2011-02-23        kinaba:      vector <double> cards(cards_, cards_+sizeof(cards_)/sizeof(*cards_));
4fd800b3a8 2011-02-23        kinaba:    double _ = 3.3;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(2)
4fd800b3a8 2011-02-23        kinaba:    double cards_[] = {8.26, 7.54, 3.2567};
4fd800b3a8 2011-02-23        kinaba:      vector <double> cards(cards_, cards_+sizeof(cards_)/sizeof(*cards_));
4fd800b3a8 2011-02-23        kinaba:    double _ = 202.82857868;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(3)
4fd800b3a8 2011-02-23        kinaba:    double cards_[] = {1.5, 1.7, 1.6, 1.5};
4fd800b3a8 2011-02-23        kinaba:      vector <double> cards(cards_, cards_+sizeof(cards_)/sizeof(*cards_));
4fd800b3a8 2011-02-23        kinaba:    double _ = 9.920000000000002;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(4)
4fd800b3a8 2011-02-23        kinaba:    double cards_[] = {10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
4fd800b3a8 2011-02-23        kinaba: 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
4fd800b3a8 2011-02-23        kinaba: 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
4fd800b3a8 2011-02-23        kinaba: 10, 10, 10, 10, 10, 10, 10, 10, 10, 10,
4fd800b3a8 2011-02-23        kinaba: 10, 10, 10, 10, 10, 10, 10, 10, 10, 10};
4fd800b3a8 2011-02-23        kinaba:      vector <double> cards(cards_, cards_+sizeof(cards_)/sizeof(*cards_));
4fd800b3a8 2011-02-23        kinaba:    double _ = 1.0E50;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: }
4fd800b3a8 2011-02-23        kinaba: // END CUT HERE