b98fbebb35 2011-09-14        kinaba: #include <iostream>
b98fbebb35 2011-09-14        kinaba: #include <sstream>
b98fbebb35 2011-09-14        kinaba: #include <iomanip>
b98fbebb35 2011-09-14        kinaba: #include <vector>
b98fbebb35 2011-09-14        kinaba: #include <string>
b98fbebb35 2011-09-14        kinaba: #include <map>
b98fbebb35 2011-09-14        kinaba: #include <set>
b98fbebb35 2011-09-14        kinaba: #include <algorithm>
b98fbebb35 2011-09-14        kinaba: #include <numeric>
b98fbebb35 2011-09-14        kinaba: #include <iterator>
b98fbebb35 2011-09-14        kinaba: #include <functional>
b98fbebb35 2011-09-14        kinaba: #include <complex>
b98fbebb35 2011-09-14        kinaba: #include <queue>
b98fbebb35 2011-09-14        kinaba: #include <stack>
b98fbebb35 2011-09-14        kinaba: #include <cmath>
b98fbebb35 2011-09-14        kinaba: #include <cassert>
b98fbebb35 2011-09-14        kinaba: #include <cstring>
b98fbebb35 2011-09-14        kinaba: using namespace std;
b98fbebb35 2011-09-14        kinaba: typedef long long LL;
b98fbebb35 2011-09-14        kinaba: typedef complex<double> CMP;
b98fbebb35 2011-09-14        kinaba: 
b98fbebb35 2011-09-14        kinaba: class CompositeSmash { public:
b98fbebb35 2011-09-14        kinaba: 	string thePossible(int N, int target)
b98fbebb35 2011-09-14        kinaba: 	{
b98fbebb35 2011-09-14        kinaba: 		return avoid(N, target) ? "No" : "Yes";
b98fbebb35 2011-09-14        kinaba: 	}
b98fbebb35 2011-09-14        kinaba: 
b98fbebb35 2011-09-14        kinaba: 	bool avoid(LL N, LL T)
b98fbebb35 2011-09-14        kinaba: 	{
b98fbebb35 2011-09-14        kinaba: 		if( N == T )
b98fbebb35 2011-09-14        kinaba: 			return false;
b98fbebb35 2011-09-14        kinaba: 		if( N < T )
b98fbebb35 2011-09-14        kinaba: 			return true;
b98fbebb35 2011-09-14        kinaba: 		bool composit = false;
b98fbebb35 2011-09-14        kinaba: 		for(LL d=2; d*d<=N && d<N; ++d)
b98fbebb35 2011-09-14        kinaba: 			if( N%d==0 ) {
b98fbebb35 2011-09-14        kinaba: 				composit = true;
b98fbebb35 2011-09-14        kinaba: 				if( avoid(d,T) && avoid(N/d,T) )
b98fbebb35 2011-09-14        kinaba: 					return true;
b98fbebb35 2011-09-14        kinaba: 			}
b98fbebb35 2011-09-14        kinaba: 		return !composit;
b98fbebb35 2011-09-14        kinaba: 	}
b98fbebb35 2011-09-14        kinaba: };
b98fbebb35 2011-09-14        kinaba: 
b98fbebb35 2011-09-14        kinaba: // BEGIN CUT HERE
b98fbebb35 2011-09-14        kinaba: #include <ctime>
b98fbebb35 2011-09-14        kinaba: double start_time; string timer()
b98fbebb35 2011-09-14        kinaba:  { ostringstream os; os << " (" << int((clock()-start_time)/CLOCKS_PER_SEC*1000) << " msec)"; return os.str(); }
b98fbebb35 2011-09-14        kinaba: template<typename T> ostream& operator<<(ostream& os, const vector<T>& v)
b98fbebb35 2011-09-14        kinaba:  { os << "{ ";
b98fbebb35 2011-09-14        kinaba:    for(typename vector<T>::const_iterator it=v.begin(); it!=v.end(); ++it)
b98fbebb35 2011-09-14        kinaba:    os << '\"' << *it << '\"' << (it+1==v.end() ? "" : ", "); os << " }"; return os; }
b98fbebb35 2011-09-14        kinaba: void verify_case(const string& Expected, const string& Received) {
b98fbebb35 2011-09-14        kinaba:  bool ok = (Expected == Received);
b98fbebb35 2011-09-14        kinaba:  if(ok) cerr << "PASSED" << timer() << endl;  else { cerr << "FAILED" << timer() << endl;
b98fbebb35 2011-09-14        kinaba:  cerr << "\to: \"" << Expected << '\"' << endl << "\tx: \"" << Received << '\"' << endl; } }
b98fbebb35 2011-09-14        kinaba: #define CASE(N) {cerr << "Test Case #" << N << "..." << flush; start_time=clock();
b98fbebb35 2011-09-14        kinaba: #define END	 verify_case(_, CompositeSmash().thePossible(N, target));}
b98fbebb35 2011-09-14        kinaba: int main(){
b98fbebb35 2011-09-14        kinaba: 
b98fbebb35 2011-09-14        kinaba: CASE(0)
b98fbebb35 2011-09-14        kinaba: 	int N = 517;
b98fbebb35 2011-09-14        kinaba: 	int target = 47;
b98fbebb35 2011-09-14        kinaba: 	string _ = "Yes";
b98fbebb35 2011-09-14        kinaba: END
b98fbebb35 2011-09-14        kinaba: CASE(1)
b98fbebb35 2011-09-14        kinaba: 	int N = 8;
b98fbebb35 2011-09-14        kinaba: 	int target = 4;
b98fbebb35 2011-09-14        kinaba: 	string _ = "Yes";
b98fbebb35 2011-09-14        kinaba: END
b98fbebb35 2011-09-14        kinaba: CASE(2)
b98fbebb35 2011-09-14        kinaba: 	int N = 12;
b98fbebb35 2011-09-14        kinaba: 	int target = 6;
b98fbebb35 2011-09-14        kinaba: 	string _ = "No";
b98fbebb35 2011-09-14        kinaba: END
b98fbebb35 2011-09-14        kinaba: CASE(3)
b98fbebb35 2011-09-14        kinaba: 	int N = 5;
b98fbebb35 2011-09-14        kinaba: 	int target = 8;
b98fbebb35 2011-09-14        kinaba: 	string _ = "No";
b98fbebb35 2011-09-14        kinaba: END
b98fbebb35 2011-09-14        kinaba: CASE(4)
b98fbebb35 2011-09-14        kinaba: 	int N = 100000;
b98fbebb35 2011-09-14        kinaba: 	int target = 100000;
b98fbebb35 2011-09-14        kinaba: 	string _ = "Yes";
b98fbebb35 2011-09-14        kinaba: END
b98fbebb35 2011-09-14        kinaba: CASE(5)
b98fbebb35 2011-09-14        kinaba: 	int N = 5858;
b98fbebb35 2011-09-14        kinaba: 	int target = 2;
b98fbebb35 2011-09-14        kinaba: 	string _ = "Yes";
b98fbebb35 2011-09-14        kinaba: END
b98fbebb35 2011-09-14        kinaba: CASE(6)
b98fbebb35 2011-09-14        kinaba: 	int N = 81461;
b98fbebb35 2011-09-14        kinaba: 	int target = 2809;
b98fbebb35 2011-09-14        kinaba: 	string _ = "No";
b98fbebb35 2011-09-14        kinaba: END
b98fbebb35 2011-09-14        kinaba: CASE(7)
b98fbebb35 2011-09-14        kinaba: 	int N = 65536;
b98fbebb35 2011-09-14        kinaba: 	int target = 256;
b98fbebb35 2011-09-14        kinaba: 	string _ = "No";
b98fbebb35 2011-09-14        kinaba: END
b98fbebb35 2011-09-14        kinaba: /*
b98fbebb35 2011-09-14        kinaba: CASE(8)
b98fbebb35 2011-09-14        kinaba: 	int N = 72;
b98fbebb35 2011-09-14        kinaba: 	int target = 4;
b98fbebb35 2011-09-14        kinaba: 	string _ = "Yes";
b98fbebb35 2011-09-14        kinaba: END
b98fbebb35 2011-09-14        kinaba: CASE(9)
b98fbebb35 2011-09-14        kinaba: 	int N = ;
b98fbebb35 2011-09-14        kinaba: 	int target = ;
b98fbebb35 2011-09-14        kinaba: 	string _ = ;
b98fbebb35 2011-09-14        kinaba: END
b98fbebb35 2011-09-14        kinaba: */
b98fbebb35 2011-09-14        kinaba: }
b98fbebb35 2011-09-14        kinaba: // END CUT HERE