Artifact a62787f87989e0f0859b48cff263b8eba687c313
#include <iostream>
#include <sstream>
#include <iomanip>
#include <vector>
#include <string>
#include <map>
#include <set>
#include <algorithm>
#include <numeric>
#include <iterator>
#include <functional>
#include <complex>
#include <queue>
#include <stack>
#include <cmath>
#include <cassert>
#include <cstring>
using namespace std;
typedef long long LL;
typedef complex<double> CMP;
class OneRegister { public:
string getProgram(int s, int t)
{
string x = run("",s,t);
string y = run("/",1, t);
string z = takeMin(x,y);
return z=="NO" ? ":-(" : z;
}
string takeMin(const string& x, const string& y)
{
if( x == "NO" )
return y;
else if( y == "NO" )
return x;
else
return (x.size()<y.size() ? x : (x.size()==y.size() ? min(x,y) : y));
}
// by using only '*' and '+'
string run(const string& buf, LL s, LL t)
{
if( s == t )
return buf;
if( s > t )
return "NO";
string x = run(buf+"+", s+s, t);
string y = (s==1 ? "NO" : run(buf+"*", s*s, t));
return takeMin(x,y);
}
};
// BEGIN CUT HERE
#include <ctime>
double start_time; string timer()
{ ostringstream os; os << " (" << int((clock()-start_time)/CLOCKS_PER_SEC*1000) << " msec)"; return os.str(); }
template<typename T> ostream& operator<<(ostream& os, const vector<T>& v)
{ os << "{ ";
for(typename vector<T>::const_iterator it=v.begin(); it!=v.end(); ++it)
os << '\"' << *it << '\"' << (it+1==v.end() ? "" : ", "); os << " }"; return os; }
void verify_case(const string& Expected, const string& Received) {
bool ok = (Expected == Received);
if(ok) cerr << "PASSED" << timer() << endl; else { cerr << "FAILED" << timer() << endl;
cerr << "\to: \"" << Expected << '\"' << endl << "\tx: \"" << Received << '\"' << endl; } }
#define CASE(N) {cerr << "Test Case #" << N << "..." << flush; start_time=clock();
#define END verify_case(_, OneRegister().getProgram(s, t));}
int main(){
CASE(0)
int s = 7;
int t = 392;
string _ = "+*+";
END
CASE(1)
int s = 7;
int t = 256;
string _ = "/+***";
END
CASE(2)
int s = 4;
int t = 256;
string _ = "**";
END
CASE(3)
int s = 7;
int t = 7;
string _ = "";
END
CASE(4)
int s = 7;
int t = 9;
string _ = ":-(";
END
CASE(5)
int s = 10;
int t = 1;
string _ = "/";
END
CASE(6)
int s = 1;
int t = 1000000000;
string _ = "dummy";
END
CASE(6)
int s = 2;
int t = 1<<30;
string _ = "dummy";
END
CASE(7)
int s = 1000000000;
int t = 1;
string _ = "dummy";
END
CASE(8)
int s = 1;
int t = 1;
string _ = "";
END
CASE(9)
int s = 2;
int t = 2;
string _ = "";
END
CASE(10)
int s = 1;
int t = 2;
string _ = "+";
END
CASE(11)
int s = 512;
int t = 65536;
string _ = "*";
END
}
// END CUT HERE