e874ae142a 2015-07-10        kinaba: #include <iostream>
e874ae142a 2015-07-10        kinaba: #include <sstream>
e874ae142a 2015-07-10        kinaba: #include <iomanip>
e874ae142a 2015-07-10        kinaba: #include <vector>
e874ae142a 2015-07-10        kinaba: #include <string>
e874ae142a 2015-07-10        kinaba: #include <map>
e874ae142a 2015-07-10        kinaba: #include <set>
e874ae142a 2015-07-10        kinaba: #include <algorithm>
e874ae142a 2015-07-10        kinaba: #include <numeric>
e874ae142a 2015-07-10        kinaba: #include <iterator>
e874ae142a 2015-07-10        kinaba: #include <functional>
e874ae142a 2015-07-10        kinaba: #include <complex>
e874ae142a 2015-07-10        kinaba: #include <queue>
e874ae142a 2015-07-10        kinaba: #include <stack>
e874ae142a 2015-07-10        kinaba: #include <cmath>
e874ae142a 2015-07-10        kinaba: #include <cassert>
e874ae142a 2015-07-10        kinaba: #include <tuple>
e874ae142a 2015-07-10        kinaba: using namespace std;
e874ae142a 2015-07-10        kinaba: typedef long long LL;
e874ae142a 2015-07-10        kinaba: typedef complex<double> CMP;
e874ae142a 2015-07-10        kinaba: 
e874ae142a 2015-07-10        kinaba: class Bitwisdom { public:
e874ae142a 2015-07-10        kinaba: 	double expectedActions(vector <int> p)
e874ae142a 2015-07-10        kinaba: 	{
e874ae142a 2015-07-10        kinaba: 		double e = 0;
e874ae142a 2015-07-10        kinaba: 		for(int i=1; i<p.size(); ++i) {
e874ae142a 2015-07-10        kinaba: 			e += (p[i]/100.0) * (100-p[i-1])/100.0
e874ae142a 2015-07-10        kinaba: 				+ (p[i-1]/100.0) * (100-p[i])/100.0;
e874ae142a 2015-07-10        kinaba: 		}
e874ae142a 2015-07-10        kinaba: 		double q = 1.0;
e874ae142a 2015-07-10        kinaba: 		for(int i=0; i<p.size(); ++i)
e874ae142a 2015-07-10        kinaba: 			q *= (p[i]/100.0);
e874ae142a 2015-07-10        kinaba: 		return e + q;
e874ae142a 2015-07-10        kinaba: 	}
e874ae142a 2015-07-10        kinaba: };
e874ae142a 2015-07-10        kinaba: 
e874ae142a 2015-07-10        kinaba: // BEGIN CUT HERE
e874ae142a 2015-07-10        kinaba: #include <ctime>
e874ae142a 2015-07-10        kinaba: double start_time; string timer()
e874ae142a 2015-07-10        kinaba:  { ostringstream os; os << " (" << int((clock()-start_time)/CLOCKS_PER_SEC*1000) << " msec)"; return os.str(); }
e874ae142a 2015-07-10        kinaba: template<typename T> ostream& operator<<(ostream& os, const vector<T>& v)
e874ae142a 2015-07-10        kinaba:  { os << "{ ";
e874ae142a 2015-07-10        kinaba:    for(typename vector<T>::const_iterator it=v.begin(); it!=v.end(); ++it)
e874ae142a 2015-07-10        kinaba:    os << '\"' << *it << '\"' << (it+1==v.end() ? "" : ", "); os << " }"; return os; }
e874ae142a 2015-07-10        kinaba: void verify_case(const double& Expected, const double& Received) {
e874ae142a 2015-07-10        kinaba:  bool ok = (abs(Expected - Received) < 1e-9);
e874ae142a 2015-07-10        kinaba:  if(ok) cerr << "PASSED" << timer() << endl;  else { cerr << "FAILED" << timer() << endl;
e874ae142a 2015-07-10        kinaba:  cerr << "\to: \"" << Expected << '\"' << endl << "\tx: \"" << Received << '\"' << endl; } }
e874ae142a 2015-07-10        kinaba: #define CASE(N) {cerr << "Test Case #" << N << "..." << flush; start_time=clock();
e874ae142a 2015-07-10        kinaba: #define END	 verify_case(_, Bitwisdom().expectedActions(p));}
e874ae142a 2015-07-10        kinaba: int main(){
e874ae142a 2015-07-10        kinaba: 
e874ae142a 2015-07-10        kinaba: CASE(0)
e874ae142a 2015-07-10        kinaba: 	int p_[] = {100, 100, 100};
e874ae142a 2015-07-10        kinaba: 	  vector <int> p(p_, p_+sizeof(p_)/sizeof(*p_));
e874ae142a 2015-07-10        kinaba: 	double _ = 1.0;
e874ae142a 2015-07-10        kinaba: END
e874ae142a 2015-07-10        kinaba: CASE(1)
e874ae142a 2015-07-10        kinaba: 	int p_[] = {50, 50};
e874ae142a 2015-07-10        kinaba: 	  vector <int> p(p_, p_+sizeof(p_)/sizeof(*p_));
e874ae142a 2015-07-10        kinaba: 	double _ = 0.75;
e874ae142a 2015-07-10        kinaba: END
e874ae142a 2015-07-10        kinaba: CASE(2)
e874ae142a 2015-07-10        kinaba: 	int p_[] = {0, 40, 50, 60};
e874ae142a 2015-07-10        kinaba: 	  vector <int> p(p_, p_+sizeof(p_)/sizeof(*p_));
e874ae142a 2015-07-10        kinaba: 	double _ = 1.4;
e874ae142a 2015-07-10        kinaba: END
e874ae142a 2015-07-10        kinaba: CASE(3)
e874ae142a 2015-07-10        kinaba: 	int p_[] = {37, 63, 23, 94, 12};
e874ae142a 2015-07-10        kinaba: 	  vector <int> p(p_, p_+sizeof(p_)/sizeof(*p_));
e874ae142a 2015-07-10        kinaba: 	double _ = 2.6820475464;
e874ae142a 2015-07-10        kinaba: END
e874ae142a 2015-07-10        kinaba: /*
e874ae142a 2015-07-10        kinaba: CASE(4)
e874ae142a 2015-07-10        kinaba: 	int p_[] = ;
e874ae142a 2015-07-10        kinaba: 	  vector <int> p(p_, p_+sizeof(p_)/sizeof(*p_));
e874ae142a 2015-07-10        kinaba: 	double _ = ;
e874ae142a 2015-07-10        kinaba: END
e874ae142a 2015-07-10        kinaba: CASE(5)
e874ae142a 2015-07-10        kinaba: 	int p_[] = ;
e874ae142a 2015-07-10        kinaba: 	  vector <int> p(p_, p_+sizeof(p_)/sizeof(*p_));
e874ae142a 2015-07-10        kinaba: 	double _ = ;
e874ae142a 2015-07-10        kinaba: END
e874ae142a 2015-07-10        kinaba: */
e874ae142a 2015-07-10        kinaba: }
e874ae142a 2015-07-10        kinaba: // END CUT HERE