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 CoinsExchange { public:
4fd800b3a8 2011-02-23        kinaba: 	int countExchanges(int G1, int S1, int B1, int G2, int S2, int B2)
4fd800b3a8 2011-02-23        kinaba: 	{
4fd800b3a8 2011-02-23        kinaba: 		if( G1 < G2 ) {
4fd800b3a8 2011-02-23        kinaba: 			int n = G2-G1;
4fd800b3a8 2011-02-23        kinaba: 			return check2( S1, B1, S2+n*11, B2, n ); // 11*n silver needed
4fd800b3a8 2011-02-23        kinaba: 		}
4fd800b3a8 2011-02-23        kinaba: 		if( B1 < B2 ) {
4fd800b3a8 2011-02-23        kinaba: 			int n = (B2-B1+8)/9;
4fd800b3a8 2011-02-23        kinaba: 			return check2( G1, S1, G2, S2+n, n ); // n silver needed
4fd800b3a8 2011-02-23        kinaba: 		}
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: 		// need silver
4fd800b3a8 2011-02-23        kinaba: 		int n = 0;
4fd800b3a8 2011-02-23        kinaba: 		while( S1<S2 && G1- 1>=G2 ) S1+=9, G1-= 1, n++;
4fd800b3a8 2011-02-23        kinaba: 		while( S1<S2 && B1-11>=B2 ) S1+=1, B1-=11, n++;
4fd800b3a8 2011-02-23        kinaba: 		return S1<S2 ? -1 : n;
4fd800b3a8 2011-02-23        kinaba: 	}
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: 	int check2(int S1, int B1, int S2, int B2, int acc)
4fd800b3a8 2011-02-23        kinaba: 	{
4fd800b3a8 2011-02-23        kinaba: 		if( S1 < S2 ) {
4fd800b3a8 2011-02-23        kinaba: 			int n = S2-S1;
4fd800b3a8 2011-02-23        kinaba: 			return B2<=B1-n*11 ? n+acc : -1;
4fd800b3a8 2011-02-23        kinaba: 		}
4fd800b3a8 2011-02-23        kinaba: 		if( B1 < B2 ) {
4fd800b3a8 2011-02-23        kinaba: 			int n = (B2-B1+8)/9;
4fd800b3a8 2011-02-23        kinaba: 			return S2<=S1-n ? n+acc : -1;
4fd800b3a8 2011-02-23        kinaba: 		}
4fd800b3a8 2011-02-23        kinaba: 		return acc;
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 int& Expected, const int& 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(_, CoinsExchange().countExchanges(G1, S1, B1, G2, S2, B2));}
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 G1 = 1;
4fd800b3a8 2011-02-23        kinaba: 	int S1 = 0;
4fd800b3a8 2011-02-23        kinaba: 	int B1 = 0;
4fd800b3a8 2011-02-23        kinaba: 	int G2 = 0;
4fd800b3a8 2011-02-23        kinaba: 	int S2 = 0;
4fd800b3a8 2011-02-23        kinaba: 	int B2 = 81;
4fd800b3a8 2011-02-23        kinaba: 	int _ = 10;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(1)
4fd800b3a8 2011-02-23        kinaba: 	int G1 = 1;
4fd800b3a8 2011-02-23        kinaba: 	int S1 = 100;
4fd800b3a8 2011-02-23        kinaba: 	int B1 = 12;
4fd800b3a8 2011-02-23        kinaba: 	int G2 = 5;
4fd800b3a8 2011-02-23        kinaba: 	int S2 = 53;
4fd800b3a8 2011-02-23        kinaba: 	int B2 = 33;
4fd800b3a8 2011-02-23        kinaba: 	int _ = 7;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(2)
4fd800b3a8 2011-02-23        kinaba: 	int G1 = 1;
4fd800b3a8 2011-02-23        kinaba: 	int S1 = 100;
4fd800b3a8 2011-02-23        kinaba: 	int B1 = 12;
4fd800b3a8 2011-02-23        kinaba: 	int G2 = 5;
4fd800b3a8 2011-02-23        kinaba: 	int S2 = 63;
4fd800b3a8 2011-02-23        kinaba: 	int B2 = 33;
4fd800b3a8 2011-02-23        kinaba: 	int _ = -1;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(3)
4fd800b3a8 2011-02-23        kinaba: 	int G1 = 5;
4fd800b3a8 2011-02-23        kinaba: 	int S1 = 10;
4fd800b3a8 2011-02-23        kinaba: 	int B1 = 12;
4fd800b3a8 2011-02-23        kinaba: 	int G2 = 3;
4fd800b3a8 2011-02-23        kinaba: 	int S2 = 7;
4fd800b3a8 2011-02-23        kinaba: 	int B2 = 9;
4fd800b3a8 2011-02-23        kinaba: 	int _ = 0;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: }
4fd800b3a8 2011-02-23        kinaba: // END CUT HERE