712c7ed383 2013-03-06        kinaba: #include <iostream>
712c7ed383 2013-03-06        kinaba: #include <sstream>
712c7ed383 2013-03-06        kinaba: #include <iomanip>
712c7ed383 2013-03-06        kinaba: #include <vector>
712c7ed383 2013-03-06        kinaba: #include <string>
712c7ed383 2013-03-06        kinaba: #include <map>
712c7ed383 2013-03-06        kinaba: #include <set>
712c7ed383 2013-03-06        kinaba: #include <algorithm>
712c7ed383 2013-03-06        kinaba: #include <numeric>
712c7ed383 2013-03-06        kinaba: #include <iterator>
712c7ed383 2013-03-06        kinaba: #include <functional>
712c7ed383 2013-03-06        kinaba: #include <complex>
712c7ed383 2013-03-06        kinaba: #include <queue>
712c7ed383 2013-03-06        kinaba: #include <stack>
712c7ed383 2013-03-06        kinaba: #include <cmath>
712c7ed383 2013-03-06        kinaba: #include <cassert>
712c7ed383 2013-03-06        kinaba: using namespace std;
712c7ed383 2013-03-06        kinaba: typedef long long LL;
712c7ed383 2013-03-06        kinaba: typedef long double LD;
712c7ed383 2013-03-06        kinaba: typedef complex<LD> CMP;
712c7ed383 2013-03-06        kinaba: 
712c7ed383 2013-03-06        kinaba: class FoxAndMp3 { public:
712c7ed383 2013-03-06        kinaba: 	set<int> used;
712c7ed383 2013-03-06        kinaba: 	vector <string> playList(int n)
712c7ed383 2013-03-06        kinaba: 	{
712c7ed383 2013-03-06        kinaba: 		vector<string> answer;
712c7ed383 2013-03-06        kinaba: 		int v = 1;
712c7ed383 2013-03-06        kinaba: 		while(answer.size() <= 50)
712c7ed383 2013-03-06        kinaba: 		{
712c7ed383 2013-03-06        kinaba: 			used.insert(v);
712c7ed383 2013-03-06        kinaba: 			answer.push_back(to_s(v)+".mp3");
712c7ed383 2013-03-06        kinaba: 			int vv;
712c7ed383 2013-03-06        kinaba: 			if(!next(v,n,&vv))
712c7ed383 2013-03-06        kinaba: 				break;
712c7ed383 2013-03-06        kinaba: 			v=vv;
712c7ed383 2013-03-06        kinaba: 			if(v==0)
712c7ed383 2013-03-06        kinaba: 				break;
712c7ed383 2013-03-06        kinaba: 		}
712c7ed383 2013-03-06        kinaba: 		return answer;
712c7ed383 2013-03-06        kinaba: 	}
712c7ed383 2013-03-06        kinaba: 
712c7ed383 2013-03-06        kinaba: 	string to_s(int v)
712c7ed383 2013-03-06        kinaba: 	{
712c7ed383 2013-03-06        kinaba: 		stringstream ss;
712c7ed383 2013-03-06        kinaba: 		ss << v;
712c7ed383 2013-03-06        kinaba: 		return ss.str();
712c7ed383 2013-03-06        kinaba: 	}
712c7ed383 2013-03-06        kinaba: 
712c7ed383 2013-03-06        kinaba: 	bool next(int v, int n, int* vv)
712c7ed383 2013-03-06        kinaba: 	{
712c7ed383 2013-03-06        kinaba: 		if(v*10<=n) {
712c7ed383 2013-03-06        kinaba: 			*vv = v*10;
712c7ed383 2013-03-06        kinaba: 			return true;
712c7ed383 2013-03-06        kinaba: 		}
712c7ed383 2013-03-06        kinaba: 		if(v+1 <= n && (v+1)%10!=0) {
712c7ed383 2013-03-06        kinaba: 			*vv = v+1;
712c7ed383 2013-03-06        kinaba: 			return true;
712c7ed383 2013-03-06        kinaba: 		}
712c7ed383 2013-03-06        kinaba: 		if(v+1 > n || (v+1)%10==0) {
712c7ed383 2013-03-06        kinaba: 			*vv=v/10+1;
712c7ed383 2013-03-06        kinaba: 			return !used.count(*vv);
712c7ed383 2013-03-06        kinaba: 		}
712c7ed383 2013-03-06        kinaba: 		return false;
712c7ed383 2013-03-06        kinaba: 	}
712c7ed383 2013-03-06        kinaba: };
712c7ed383 2013-03-06        kinaba: 
712c7ed383 2013-03-06        kinaba: // BEGIN CUT HERE
712c7ed383 2013-03-06        kinaba: #include <ctime>
712c7ed383 2013-03-06        kinaba: double start_time; string timer()
712c7ed383 2013-03-06        kinaba:  { ostringstream os; os << " (" << int((clock()-start_time)/CLOCKS_PER_SEC*1000) << " msec)"; return os.str(); }
712c7ed383 2013-03-06        kinaba: template<typename T> ostream& operator<<(ostream& os, const vector<T>& v)
712c7ed383 2013-03-06        kinaba:  { os << "{ ";
712c7ed383 2013-03-06        kinaba:    for(typename vector<T>::const_iterator it=v.begin(); it!=v.end(); ++it)
712c7ed383 2013-03-06        kinaba:    os << '\"' << *it << '\"' << (it+1==v.end() ? "" : ", "); os << " }"; return os; }
712c7ed383 2013-03-06        kinaba: void verify_case(const vector <string>& Expected, const vector <string>& Received) {
712c7ed383 2013-03-06        kinaba:  bool ok = (Expected == Received);
712c7ed383 2013-03-06        kinaba:  if(ok) cerr << "PASSED" << timer() << endl;  else { cerr << "FAILED" << timer() << endl;
712c7ed383 2013-03-06        kinaba:  cerr << "\to: " << Expected << endl << "\tx: " << Received << endl; } }
712c7ed383 2013-03-06        kinaba: #define CASE(N) {cerr << "Test Case #" << N << "..." << flush; start_time=clock();
712c7ed383 2013-03-06        kinaba: #define END	 verify_case(_, FoxAndMp3().playList(n));}
712c7ed383 2013-03-06        kinaba: int main(){
712c7ed383 2013-03-06        kinaba: 
712c7ed383 2013-03-06        kinaba: CASE(0)
712c7ed383 2013-03-06        kinaba: 	int n = 3;
712c7ed383 2013-03-06        kinaba: 	string __[] = {"1.mp3", "2.mp3", "3.mp3" };
712c7ed383 2013-03-06        kinaba: 	  vector <string> _(__, __+sizeof(__)/sizeof(*__));
712c7ed383 2013-03-06        kinaba: END
712c7ed383 2013-03-06        kinaba: CASE(1)
712c7ed383 2013-03-06        kinaba: 	int n = 10;
712c7ed383 2013-03-06        kinaba: 	string __[] = {"1.mp3", "10.mp3", "2.mp3", "3.mp3", "4.mp3", "5.mp3", "6.mp3", "7.mp3", "8.mp3", "9.mp3" };
712c7ed383 2013-03-06        kinaba: 	  vector <string> _(__, __+sizeof(__)/sizeof(*__));
712c7ed383 2013-03-06        kinaba: END
712c7ed383 2013-03-06        kinaba: CASE(2)
712c7ed383 2013-03-06        kinaba: 	int n = 16;
712c7ed383 2013-03-06        kinaba: 	string __[] = {"1.mp3", "10.mp3", "11.mp3", "12.mp3", "13.mp3", "14.mp3", "15.mp3", "16.mp3", "2.mp3", "3.mp3", "4.mp3", "5.mp3", "6.mp3", "7.mp3", "8.mp3", "9.mp3" };
712c7ed383 2013-03-06        kinaba: 	  vector <string> _(__, __+sizeof(__)/sizeof(*__));
712c7ed383 2013-03-06        kinaba: END
712c7ed383 2013-03-06        kinaba: CASE(3)
712c7ed383 2013-03-06        kinaba: 	int n = 32;
712c7ed383 2013-03-06        kinaba: 	string __[] = {"1.mp3", "10.mp3", "11.mp3", "12.mp3", "13.mp3", "14.mp3", "15.mp3", "16.mp3", "17.mp3", "18.mp3", "19.mp3", "2.mp3", "20.mp3", "21.mp3", "22.mp3", "23.mp3", "24.mp3", "25.mp3", "26.mp3", "27.mp3", "28.mp3", "29.mp3", "3.mp3", "30.mp3", "31.mp3", "32.mp3", "4.mp3", "5.mp3", "6.mp3", "7.mp3", "8.mp3", "9.mp3" };
712c7ed383 2013-03-06        kinaba: 	  vector <string> _(__, __+sizeof(__)/sizeof(*__));
712c7ed383 2013-03-06        kinaba: END
712c7ed383 2013-03-06        kinaba: CASE(4)
712c7ed383 2013-03-06        kinaba: 	int n = 100000009;
712c7ed383 2013-03-06        kinaba: 	string __[] = {"1.mp3", "10.mp3", "100.mp3", "1000.mp3", "10000.mp3", "100000.mp3", "1000000.mp3", "10000000.mp3", "100000000.mp3", "100000001.mp3", "100000002.mp3", "100000003.mp3", "100000004.mp3", "100000005.mp3", "100000006.mp3", "100000007.mp3", "100000008.mp3", "100000009.mp3", "10000001.mp3", "10000002.mp3", "10000003.mp3", "10000004.mp3", "10000005.mp3", "10000006.mp3", "10000007.mp3", "10000008.mp3", "10000009.mp3", "1000001.mp3", "10000010.mp3", "10000011.mp3", "10000012.mp3", "10000013.mp3", "10000014.mp3", "10000015.mp3", "10000016.mp3", "10000017.mp3", "10000018.mp3", "10000019.mp3", "1000002.mp3", "10000020.mp3", "10000021.mp3", "10000022.mp3", "10000023.mp3", "10000024.mp3", "10000025.mp3", "10000026.mp3", "10000027.mp3", "10000028.mp3", "10000029.mp3", "1000003.mp3" };
712c7ed383 2013-03-06        kinaba: 	  vector <string> _(__, __+sizeof(__)/sizeof(*__));
712c7ed383 2013-03-06        kinaba: END
712c7ed383 2013-03-06        kinaba: CASE(5)
712c7ed383 2013-03-06        kinaba: 	int n = 1;
712c7ed383 2013-03-06        kinaba: 	string __[] = {"1.mp3" };
712c7ed383 2013-03-06        kinaba: 	  vector <string> _(__, __+sizeof(__)/sizeof(*__));
712c7ed383 2013-03-06        kinaba: END
712c7ed383 2013-03-06        kinaba: /*
712c7ed383 2013-03-06        kinaba: CASE(6)
712c7ed383 2013-03-06        kinaba: 	int n = ;
712c7ed383 2013-03-06        kinaba: 	string __[] = ;
712c7ed383 2013-03-06        kinaba: 	  vector <string> _(__, __+sizeof(__)/sizeof(*__));
712c7ed383 2013-03-06        kinaba: END
712c7ed383 2013-03-06        kinaba: CASE(7)
712c7ed383 2013-03-06        kinaba: 	int n = ;
712c7ed383 2013-03-06        kinaba: 	string __[] = ;
712c7ed383 2013-03-06        kinaba: 	  vector <string> _(__, __+sizeof(__)/sizeof(*__));
712c7ed383 2013-03-06        kinaba: END
712c7ed383 2013-03-06        kinaba: */
712c7ed383 2013-03-06        kinaba: }
712c7ed383 2013-03-06        kinaba: // END CUT HERE