226a376552 2011-12-28        kinaba: #include <iostream>
226a376552 2011-12-28        kinaba: #include <sstream>
226a376552 2011-12-28        kinaba: #include <iomanip>
226a376552 2011-12-28        kinaba: #include <vector>
226a376552 2011-12-28        kinaba: #include <string>
226a376552 2011-12-28        kinaba: #include <map>
226a376552 2011-12-28        kinaba: #include <set>
226a376552 2011-12-28        kinaba: #include <algorithm>
226a376552 2011-12-28        kinaba: #include <numeric>
226a376552 2011-12-28        kinaba: #include <iterator>
226a376552 2011-12-28        kinaba: #include <functional>
226a376552 2011-12-28        kinaba: #include <complex>
226a376552 2011-12-28        kinaba: #include <queue>
226a376552 2011-12-28        kinaba: #include <stack>
226a376552 2011-12-28        kinaba: #include <cmath>
226a376552 2011-12-28        kinaba: #include <cassert>
226a376552 2011-12-28        kinaba: #include <cstring>
226a376552 2011-12-28        kinaba: #ifdef __GNUC__
226a376552 2011-12-28        kinaba: #include <ext/hash_map>
226a376552 2011-12-28        kinaba: #define unordered_map __gnu_cxx::hash_map
226a376552 2011-12-28        kinaba: #else
226a376552 2011-12-28        kinaba: #include <unordered_map>
226a376552 2011-12-28        kinaba: #endif
226a376552 2011-12-28        kinaba: using namespace std;
226a376552 2011-12-28        kinaba: typedef long long LL;
226a376552 2011-12-28        kinaba: typedef complex<double> CMP;
226a376552 2011-12-28        kinaba: 
226a376552 2011-12-28        kinaba: class MagicNaming { public:
226a376552 2011-12-28        kinaba: 	int maxReindeers(string magicName)
226a376552 2011-12-28        kinaba: 	{
226a376552 2011-12-28        kinaba: 		return rec(magicName, 0, "");
226a376552 2011-12-28        kinaba: 	}
226a376552 2011-12-28        kinaba: 
226a376552 2011-12-28        kinaba: 	map<pair<int,string>, int> memo;
226a376552 2011-12-28        kinaba: 	int rec(const string& s, int i, const string& last)
226a376552 2011-12-28        kinaba: 	{
226a376552 2011-12-28        kinaba: 		if( i == s.size() )
226a376552 2011-12-28        kinaba: 			return 0;
226a376552 2011-12-28        kinaba: 		pair<int,string> key(i, last);
226a376552 2011-12-28        kinaba: 		if( memo.count(key) )
226a376552 2011-12-28        kinaba: 			return memo[key];
226a376552 2011-12-28        kinaba: 
226a376552 2011-12-28        kinaba: 		// a+b <= b+a,  b+c <= c+b
226a376552 2011-12-28        kinaba: 		int score = -1;
226a376552 2011-12-28        kinaba: 		for(int e=i+1; e<=s.size(); ++e) {
226a376552 2011-12-28        kinaba: 			string t = s.substr(i, e-i);
226a376552 2011-12-28        kinaba: 			if( last+t <= t+last ) {
226a376552 2011-12-28        kinaba: 				int ss = rec(s, e, t);
226a376552 2011-12-28        kinaba: 				if( ss != -1 )
226a376552 2011-12-28        kinaba: 					score = max(score, 1 + ss);
226a376552 2011-12-28        kinaba: 			}
226a376552 2011-12-28        kinaba: 		}
226a376552 2011-12-28        kinaba: 		return memo[key] = score;
226a376552 2011-12-28        kinaba: 	}
226a376552 2011-12-28        kinaba: };
226a376552 2011-12-28        kinaba: 
226a376552 2011-12-28        kinaba: // BEGIN CUT HERE
226a376552 2011-12-28        kinaba: #include <ctime>
226a376552 2011-12-28        kinaba: double start_time; string timer()
226a376552 2011-12-28        kinaba:  { ostringstream os; os << " (" << int((clock()-start_time)/CLOCKS_PER_SEC*1000) << " msec)"; return os.str(); }
226a376552 2011-12-28        kinaba: template<typename T> ostream& operator<<(ostream& os, const vector<T>& v)
226a376552 2011-12-28        kinaba:  { os << "{ ";
226a376552 2011-12-28        kinaba:    for(typename vector<T>::const_iterator it=v.begin(); it!=v.end(); ++it)
226a376552 2011-12-28        kinaba:    os << '\"' << *it << '\"' << (it+1==v.end() ? "" : ", "); os << " }"; return os; }
226a376552 2011-12-28        kinaba: void verify_case(const int& Expected, const int& Received) {
226a376552 2011-12-28        kinaba:  bool ok = (Expected == Received);
226a376552 2011-12-28        kinaba:  if(ok) cerr << "PASSED" << timer() << endl;  else { cerr << "FAILED" << timer() << endl;
226a376552 2011-12-28        kinaba:  cerr << "\to: \"" << Expected << '\"' << endl << "\tx: \"" << Received << '\"' << endl; } }
226a376552 2011-12-28        kinaba: #define CASE(N) {cerr << "Test Case #" << N << "..." << flush; start_time=clock();
226a376552 2011-12-28        kinaba: #define END	 verify_case(_, MagicNaming().maxReindeers(magicName));}
226a376552 2011-12-28        kinaba: int main(){
226a376552 2011-12-28        kinaba: 
226a376552 2011-12-28        kinaba: CASE(0)
226a376552 2011-12-28        kinaba: 	string magicName = "aba";
226a376552 2011-12-28        kinaba: 	int _ = 2;
226a376552 2011-12-28        kinaba: END
226a376552 2011-12-28        kinaba: CASE(1)
226a376552 2011-12-28        kinaba: 	string magicName = "babbaba";
226a376552 2011-12-28        kinaba: 	int _ = 2;
226a376552 2011-12-28        kinaba: END
226a376552 2011-12-28        kinaba: CASE(2)
226a376552 2011-12-28        kinaba: 	string magicName = "philosophersstone";
226a376552 2011-12-28        kinaba: 	int _ = 5;
226a376552 2011-12-28        kinaba: END
226a376552 2011-12-28        kinaba: CASE(3)
226a376552 2011-12-28        kinaba: 	string magicName = "knuthmorrispratt";
226a376552 2011-12-28        kinaba: 	int _ = 7;
226a376552 2011-12-28        kinaba: END
226a376552 2011-12-28        kinaba: CASE(4)
226a376552 2011-12-28        kinaba: 	string magicName = "acrushpetrtourist";
226a376552 2011-12-28        kinaba: 	int _ = 7;
226a376552 2011-12-28        kinaba: END
226a376552 2011-12-28        kinaba: CASE(5)
226a376552 2011-12-28        kinaba: 	string magicName = "zzzzz";
226a376552 2011-12-28        kinaba: 	int _ = 5;
226a376552 2011-12-28        kinaba: END
226a376552 2011-12-28        kinaba: /*
226a376552 2011-12-28        kinaba: CASE(6)
226a376552 2011-12-28        kinaba: 	string magicName = ;
226a376552 2011-12-28        kinaba: 	int _ = ;
226a376552 2011-12-28        kinaba: END
226a376552 2011-12-28        kinaba: CASE(7)
226a376552 2011-12-28        kinaba: 	string magicName = ;
226a376552 2011-12-28        kinaba: 	int _ = ;
226a376552 2011-12-28        kinaba: END
226a376552 2011-12-28        kinaba: */
226a376552 2011-12-28        kinaba: }
226a376552 2011-12-28        kinaba: // END CUT HERE