5af29f0d04 2012-04-01        kinaba: #include <iostream>
5af29f0d04 2012-04-01        kinaba: #include <sstream>
5af29f0d04 2012-04-01        kinaba: #include <iomanip>
5af29f0d04 2012-04-01        kinaba: #include <vector>
5af29f0d04 2012-04-01        kinaba: #include <string>
5af29f0d04 2012-04-01        kinaba: #include <map>
5af29f0d04 2012-04-01        kinaba: #include <set>
5af29f0d04 2012-04-01        kinaba: #include <algorithm>
5af29f0d04 2012-04-01        kinaba: #include <numeric>
5af29f0d04 2012-04-01        kinaba: #include <iterator>
5af29f0d04 2012-04-01        kinaba: #include <functional>
5af29f0d04 2012-04-01        kinaba: #include <complex>
5af29f0d04 2012-04-01        kinaba: #include <queue>
5af29f0d04 2012-04-01        kinaba: #include <stack>
5af29f0d04 2012-04-01        kinaba: #include <cmath>
5af29f0d04 2012-04-01        kinaba: #include <cassert>
5af29f0d04 2012-04-01        kinaba: #include <cstring>
5af29f0d04 2012-04-01        kinaba: #ifdef __GNUC__
5af29f0d04 2012-04-01        kinaba: #include <ext/hash_map>
5af29f0d04 2012-04-01        kinaba: #define unordered_map __gnu_cxx::hash_map
5af29f0d04 2012-04-01        kinaba: #else
5af29f0d04 2012-04-01        kinaba: #include <unordered_map>
5af29f0d04 2012-04-01        kinaba: #endif
5af29f0d04 2012-04-01        kinaba: using namespace std;
5af29f0d04 2012-04-01        kinaba: typedef long long LL;
5af29f0d04 2012-04-01        kinaba: typedef complex<double> CMP;
5af29f0d04 2012-04-01        kinaba: 
5af29f0d04 2012-04-01        kinaba: class EllysFractions { public:
5af29f0d04 2012-04-01        kinaba: 	long long getCount(int N)
5af29f0d04 2012-04-01        kinaba: 	{
5af29f0d04 2012-04-01        kinaba: 		LL total = 0;
5af29f0d04 2012-04-01        kinaba: 		for(int k=2; k<=N; ++k)
5af29f0d04 2012-04-01        kinaba: 			total += getExact(k);
5af29f0d04 2012-04-01        kinaba: 		return total;
5af29f0d04 2012-04-01        kinaba: 	}
5af29f0d04 2012-04-01        kinaba: 
5af29f0d04 2012-04-01        kinaba: 	LL getExact(int N)
5af29f0d04 2012-04-01        kinaba: 	{
5af29f0d04 2012-04-01        kinaba: 		int np = 0;
5af29f0d04 2012-04-01        kinaba: 		for(int p=2; p<=N; ++p)
5af29f0d04 2012-04-01        kinaba: 			if(is_prime(p))
5af29f0d04 2012-04-01        kinaba: 				++np;
5af29f0d04 2012-04-01        kinaba: 		LL v = 1;
5af29f0d04 2012-04-01        kinaba: 		for(int i=0; i<np; ++i)
5af29f0d04 2012-04-01        kinaba: 			v *= 2;
5af29f0d04 2012-04-01        kinaba: 		return v/2;
5af29f0d04 2012-04-01        kinaba: 	}
5af29f0d04 2012-04-01        kinaba: 
5af29f0d04 2012-04-01        kinaba: 	bool is_prime(int n)
5af29f0d04 2012-04-01        kinaba: 	{
5af29f0d04 2012-04-01        kinaba: 		for(int k=2; k<n; ++k)
5af29f0d04 2012-04-01        kinaba: 			if(n%k == 0)
5af29f0d04 2012-04-01        kinaba: 				return false;
5af29f0d04 2012-04-01        kinaba: 		return true;
5af29f0d04 2012-04-01        kinaba: 	}
5af29f0d04 2012-04-01        kinaba: };
5af29f0d04 2012-04-01        kinaba: 
5af29f0d04 2012-04-01        kinaba: // BEGIN CUT HERE
5af29f0d04 2012-04-01        kinaba: #include <ctime>
5af29f0d04 2012-04-01        kinaba: double start_time; string timer()
5af29f0d04 2012-04-01        kinaba:  { ostringstream os; os << " (" << int((clock()-start_time)/CLOCKS_PER_SEC*1000) << " msec)"; return os.str(); }
5af29f0d04 2012-04-01        kinaba: template<typename T> ostream& operator<<(ostream& os, const vector<T>& v)
5af29f0d04 2012-04-01        kinaba:  { os << "{ ";
5af29f0d04 2012-04-01        kinaba:    for(typename vector<T>::const_iterator it=v.begin(); it!=v.end(); ++it)
5af29f0d04 2012-04-01        kinaba:    os << '\"' << *it << '\"' << (it+1==v.end() ? "" : ", "); os << " }"; return os; }
5af29f0d04 2012-04-01        kinaba: void verify_case(const long long& Expected, const long long& Received) {
5af29f0d04 2012-04-01        kinaba:  bool ok = (Expected == Received);
5af29f0d04 2012-04-01        kinaba:  if(ok) cerr << "PASSED" << timer() << endl;  else { cerr << "FAILED" << timer() << endl;
5af29f0d04 2012-04-01        kinaba:  cerr << "\to: \"" << Expected << '\"' << endl << "\tx: \"" << Received << '\"' << endl; } }
5af29f0d04 2012-04-01        kinaba: #define CASE(N) {cerr << "Test Case #" << N << "..." << flush; start_time=clock();
5af29f0d04 2012-04-01        kinaba: #define END	 verify_case(_, EllysFractions().getCount(N));}
5af29f0d04 2012-04-01        kinaba: int main(){
5af29f0d04 2012-04-01        kinaba: 
5af29f0d04 2012-04-01        kinaba: CASE(0)
5af29f0d04 2012-04-01        kinaba: 	int N = 1;
5af29f0d04 2012-04-01        kinaba: 	long long _ = 0LL;
5af29f0d04 2012-04-01        kinaba: END
5af29f0d04 2012-04-01        kinaba: CASE(1)
5af29f0d04 2012-04-01        kinaba: 	int N = 2;
5af29f0d04 2012-04-01        kinaba: 	long long _ = 1LL;
5af29f0d04 2012-04-01        kinaba: END
5af29f0d04 2012-04-01        kinaba: CASE(2)
5af29f0d04 2012-04-01        kinaba: 	int N = 3;
5af29f0d04 2012-04-01        kinaba: 	long long _ = 3LL;
5af29f0d04 2012-04-01        kinaba: END
5af29f0d04 2012-04-01        kinaba: CASE(3)
5af29f0d04 2012-04-01        kinaba: 	int N = 5;
5af29f0d04 2012-04-01        kinaba: 	long long _ = 9LL;
5af29f0d04 2012-04-01        kinaba: END
5af29f0d04 2012-04-01        kinaba: CASE(4)
5af29f0d04 2012-04-01        kinaba: 	int N = 100;
5af29f0d04 2012-04-01        kinaba: 	long long _ = 177431885LL;
5af29f0d04 2012-04-01        kinaba: END
5af29f0d04 2012-04-01        kinaba: CASE(5)
5af29f0d04 2012-04-01        kinaba: 	int N = 250;
5af29f0d04 2012-04-01        kinaba: 	long long _ = -1LL;
5af29f0d04 2012-04-01        kinaba: END
5af29f0d04 2012-04-01        kinaba: CASE(6)
5af29f0d04 2012-04-01        kinaba: 	int N = 4;
5af29f0d04 2012-04-01        kinaba: 	long long _ = 5LL;
5af29f0d04 2012-04-01        kinaba: END
5af29f0d04 2012-04-01        kinaba: }
5af29f0d04 2012-04-01        kinaba: // END CUT HERE