Artifact 1549db04e8126d785195da0b282fa68b128af7a4
#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>
#ifdef __GNUC__
#include <ext/hash_map>
#define unordered_map __gnu_cxx::hash_map
#else
#include <unordered_map>
#endif
using namespace std;
typedef long long LL;
typedef complex<double> CMP;
LL gcd(LL a, LL b)
{
while(a)
swap(a, b%=a);
return b;
}
class FoxAndGCDLCM { public:
long long get(long long G, long long L)
{
if( L%G != 0 )
return -1;
LL best = -1;
LL z = L / G;
for(LL p=1; p*p<=z; ++p)
if( z%p==0 && gcd(p,z/p)==1 ) {
LL A = G*p;
LL B = G*(z/p);
if( best == -1 || best > A+B )
best = A+B;
}
return best;
}
};
// 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 long long& Expected, const long long& 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(_, FoxAndGCDLCM().get(G, L));}
int main(){
CASE(0)
long long G = 2LL;
long long L = 20LL;
long long _ = 14LL;
END
CASE(1)
long long G = 5LL;
long long L = 8LL;
long long _ = -1LL;
END
CASE(2)
long long G = 1000LL;
long long L = 100LL;
long long _ = -1LL;
END
CASE(3)
long long G = 100LL;
long long L = 1000LL;
long long _ = 700LL;
END
CASE(4)
long long G = 10LL;
long long L = 950863963000LL;
long long _ = 6298430LL;
END
/*
CASE(5)
long long G = LL;
long long L = LL;
long long _ = LL;
END
CASE(6)
long long G = LL;
long long L = LL;
long long _ = LL;
END
*/
}
// END CUT HERE