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 OneRegister { public:
4fd800b3a8 2011-02-23        kinaba: 	string getProgram(int s, int t)
4fd800b3a8 2011-02-23        kinaba: 	{
4fd800b3a8 2011-02-23        kinaba: 		string x = run("",s,t);
4fd800b3a8 2011-02-23        kinaba: 		string y = run("/",1, t);
4fd800b3a8 2011-02-23        kinaba: 		string z = takeMin(x,y);
4fd800b3a8 2011-02-23        kinaba: 		return z=="NO" ? ":-(" : z;
4fd800b3a8 2011-02-23        kinaba: 	}
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: 	string takeMin(const string& x, const string& y)
4fd800b3a8 2011-02-23        kinaba: 	{
4fd800b3a8 2011-02-23        kinaba: 		if( x == "NO" )
4fd800b3a8 2011-02-23        kinaba: 			return y;
4fd800b3a8 2011-02-23        kinaba: 		else if( y == "NO" )
4fd800b3a8 2011-02-23        kinaba: 			return x;
4fd800b3a8 2011-02-23        kinaba: 		else
4fd800b3a8 2011-02-23        kinaba: 			return (x.size()<y.size() ? x : (x.size()==y.size() ? min(x,y) : y));
4fd800b3a8 2011-02-23        kinaba: 	}
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: 	// by using only '*' and '+'
4fd800b3a8 2011-02-23        kinaba: 	string run(const string& buf, LL s, LL t)
4fd800b3a8 2011-02-23        kinaba: 	{
4fd800b3a8 2011-02-23        kinaba: 		if( s == t )
4fd800b3a8 2011-02-23        kinaba: 			return buf;
4fd800b3a8 2011-02-23        kinaba: 		if( s > t )
4fd800b3a8 2011-02-23        kinaba: 			return "NO";
4fd800b3a8 2011-02-23        kinaba: 		string x = run(buf+"+", s+s, t);
4fd800b3a8 2011-02-23        kinaba: 		string y = (s==1 ? "NO" : run(buf+"*", s*s, t));
4fd800b3a8 2011-02-23        kinaba: 		return takeMin(x,y);
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 string& Expected, const string& Received) {
4fd800b3a8 2011-02-23        kinaba:  bool ok = (Expected == Received);
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(_, OneRegister().getProgram(s, t));}
4fd800b3a8 2011-02-23        kinaba: int main(){
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: CASE(0)
4fd800b3a8 2011-02-23        kinaba: 	int s = 7;
4fd800b3a8 2011-02-23        kinaba: 	int t = 392;
4fd800b3a8 2011-02-23        kinaba: 	string _ = "+*+";
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(1)
4fd800b3a8 2011-02-23        kinaba: 	int s = 7;
4fd800b3a8 2011-02-23        kinaba: 	int t = 256;
4fd800b3a8 2011-02-23        kinaba: 	string _ = "/+***";
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(2)
4fd800b3a8 2011-02-23        kinaba: 	int s = 4;
4fd800b3a8 2011-02-23        kinaba: 	int t = 256;
4fd800b3a8 2011-02-23        kinaba: 	string _ = "**";
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(3)
4fd800b3a8 2011-02-23        kinaba: 	int s = 7;
4fd800b3a8 2011-02-23        kinaba: 	int t = 7;
4fd800b3a8 2011-02-23        kinaba: 	string _ = "";
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(4)
4fd800b3a8 2011-02-23        kinaba: 	int s = 7;
4fd800b3a8 2011-02-23        kinaba: 	int t = 9;
4fd800b3a8 2011-02-23        kinaba: 	string _ = ":-(";
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(5)
4fd800b3a8 2011-02-23        kinaba: 	int s = 10;
4fd800b3a8 2011-02-23        kinaba: 	int t = 1;
4fd800b3a8 2011-02-23        kinaba: 	string _ = "/";
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(6)
4fd800b3a8 2011-02-23        kinaba: 	int s = 1;
4fd800b3a8 2011-02-23        kinaba: 	int t = 1000000000;
4fd800b3a8 2011-02-23        kinaba: 	string _ = "dummy";
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(6)
4fd800b3a8 2011-02-23        kinaba: 	int s = 2;
4fd800b3a8 2011-02-23        kinaba: 	int t = 1<<30;
4fd800b3a8 2011-02-23        kinaba: 	string _ = "dummy";
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(7)
4fd800b3a8 2011-02-23        kinaba: 	int s = 1000000000;
4fd800b3a8 2011-02-23        kinaba: 	int t = 1;
4fd800b3a8 2011-02-23        kinaba: 	string _ = "dummy";
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(8)
4fd800b3a8 2011-02-23        kinaba: 	int s = 1;
4fd800b3a8 2011-02-23        kinaba: 	int t = 1;
4fd800b3a8 2011-02-23        kinaba: 	string _ = "";
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(9)
4fd800b3a8 2011-02-23        kinaba: 	int s = 2;
4fd800b3a8 2011-02-23        kinaba: 	int t = 2;
4fd800b3a8 2011-02-23        kinaba: 	string _ = "";
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(10)
4fd800b3a8 2011-02-23        kinaba: 	int s = 1;
4fd800b3a8 2011-02-23        kinaba: 	int t = 2;
4fd800b3a8 2011-02-23        kinaba: 	string _ = "+";
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(11)
4fd800b3a8 2011-02-23        kinaba: 	int s = 512;
4fd800b3a8 2011-02-23        kinaba: 	int t = 65536;
4fd800b3a8 2011-02-23        kinaba: 	string _ = "*";
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: }
4fd800b3a8 2011-02-23        kinaba: // END CUT HERE