f0a8c39350 2013-09-16        kinaba: #include <iostream>
f0a8c39350 2013-09-16        kinaba: #include <sstream>
f0a8c39350 2013-09-16        kinaba: #include <iomanip>
f0a8c39350 2013-09-16        kinaba: #include <vector>
f0a8c39350 2013-09-16        kinaba: #include <string>
f0a8c39350 2013-09-16        kinaba: #include <map>
f0a8c39350 2013-09-16        kinaba: #include <set>
f0a8c39350 2013-09-16        kinaba: #include <algorithm>
f0a8c39350 2013-09-16        kinaba: #include <numeric>
f0a8c39350 2013-09-16        kinaba: #include <iterator>
f0a8c39350 2013-09-16        kinaba: #include <functional>
f0a8c39350 2013-09-16        kinaba: #include <complex>
f0a8c39350 2013-09-16        kinaba: #include <queue>
f0a8c39350 2013-09-16        kinaba: #include <stack>
f0a8c39350 2013-09-16        kinaba: #include <cmath>
f0a8c39350 2013-09-16        kinaba: #include <cassert>
f0a8c39350 2013-09-16        kinaba: #include <tuple>
f0a8c39350 2013-09-16        kinaba: using namespace std;
f0a8c39350 2013-09-16        kinaba: typedef long long LL;
f0a8c39350 2013-09-16        kinaba: typedef complex<double> CMP;
f0a8c39350 2013-09-16        kinaba: 
f0a8c39350 2013-09-16        kinaba: class FoxAndChess { public:
f0a8c39350 2013-09-16        kinaba: 	string ableToMove(string begin, string target)
f0a8c39350 2013-09-16        kinaba: 	{
f0a8c39350 2013-09-16        kinaba: 		return solve(cb(begin), cb(target)) ? "Possible" : "Impossible";
f0a8c39350 2013-09-16        kinaba: 	}
f0a8c39350 2013-09-16        kinaba: 
f0a8c39350 2013-09-16        kinaba: 	vector<pair<char,int>> cb(string s)
f0a8c39350 2013-09-16        kinaba: 	{
f0a8c39350 2013-09-16        kinaba: 		vector<pair<char,int>> v;
f0a8c39350 2013-09-16        kinaba: 		for(int i=0; i<s.size(); ++i)
f0a8c39350 2013-09-16        kinaba: 			if(s[i]!='.')
f0a8c39350 2013-09-16        kinaba: 				v.emplace_back(s[i], i);
f0a8c39350 2013-09-16        kinaba: 		return v;
f0a8c39350 2013-09-16        kinaba: 	}
f0a8c39350 2013-09-16        kinaba: 
f0a8c39350 2013-09-16        kinaba: 	bool solve(const vector<pair<char,int>>& b, const vector<pair<char,int>>& e)
f0a8c39350 2013-09-16        kinaba: 	{
f0a8c39350 2013-09-16        kinaba: 		if(b.size() != e.size())
f0a8c39350 2013-09-16        kinaba: 			return false;
f0a8c39350 2013-09-16        kinaba: 		for(int i=0; i<b.size(); ++i) {
f0a8c39350 2013-09-16        kinaba: 			if(b[i].first != e[i].first)
f0a8c39350 2013-09-16        kinaba: 				return false;
f0a8c39350 2013-09-16        kinaba: 			if(b[i].first == 'L' && b[i].second<e[i].second)
f0a8c39350 2013-09-16        kinaba: 				return false;
f0a8c39350 2013-09-16        kinaba: 			if(b[i].first == 'R' && b[i].second>e[i].second)
f0a8c39350 2013-09-16        kinaba: 				return false;
f0a8c39350 2013-09-16        kinaba: 		}
f0a8c39350 2013-09-16        kinaba: 		return true;
f0a8c39350 2013-09-16        kinaba: 	}
f0a8c39350 2013-09-16        kinaba: };
f0a8c39350 2013-09-16        kinaba: 
f0a8c39350 2013-09-16        kinaba: // BEGIN CUT HERE
f0a8c39350 2013-09-16        kinaba: #include <ctime>
f0a8c39350 2013-09-16        kinaba: double start_time; string timer()
f0a8c39350 2013-09-16        kinaba:  { ostringstream os; os << " (" << int((clock()-start_time)/CLOCKS_PER_SEC*1000) << " msec)"; return os.str(); }
f0a8c39350 2013-09-16        kinaba: template<typename T> ostream& operator<<(ostream& os, const vector<T>& v)
f0a8c39350 2013-09-16        kinaba:  { os << "{ ";
f0a8c39350 2013-09-16        kinaba:    for(typename vector<T>::const_iterator it=v.begin(); it!=v.end(); ++it)
f0a8c39350 2013-09-16        kinaba:    os << '\"' << *it << '\"' << (it+1==v.end() ? "" : ", "); os << " }"; return os; }
f0a8c39350 2013-09-16        kinaba: void verify_case(const string& Expected, const string& Received) {
f0a8c39350 2013-09-16        kinaba:  bool ok = (Expected == Received);
f0a8c39350 2013-09-16        kinaba:  if(ok) cerr << "PASSED" << timer() << endl;  else { cerr << "FAILED" << timer() << endl;
f0a8c39350 2013-09-16        kinaba:  cerr << "\to: \"" << Expected << '\"' << endl << "\tx: \"" << Received << '\"' << endl; } }
f0a8c39350 2013-09-16        kinaba: #define CASE(N) {cerr << "Test Case #" << N << "..." << flush; start_time=clock();
f0a8c39350 2013-09-16        kinaba: #define END	 verify_case(_, FoxAndChess().ableToMove(begin, target));}
f0a8c39350 2013-09-16        kinaba: int main(){
f0a8c39350 2013-09-16        kinaba: 
f0a8c39350 2013-09-16        kinaba: CASE(0)
f0a8c39350 2013-09-16        kinaba: 	string begin = "R...";
f0a8c39350 2013-09-16        kinaba: 	string target = "..R.";
f0a8c39350 2013-09-16        kinaba: 	string _ = "Possible";
f0a8c39350 2013-09-16        kinaba: END
f0a8c39350 2013-09-16        kinaba: CASE(1)
f0a8c39350 2013-09-16        kinaba: 	string begin = "..R.";
f0a8c39350 2013-09-16        kinaba: 	string target = "R...";
f0a8c39350 2013-09-16        kinaba: 	string _ = "Impossible";
f0a8c39350 2013-09-16        kinaba: END
f0a8c39350 2013-09-16        kinaba: CASE(2)
f0a8c39350 2013-09-16        kinaba: 	string begin = ".L.R.R.";
f0a8c39350 2013-09-16        kinaba: 	string target = "L...R.R";
f0a8c39350 2013-09-16        kinaba: 	string _ = "Possible";
f0a8c39350 2013-09-16        kinaba: END
f0a8c39350 2013-09-16        kinaba: CASE(3)
f0a8c39350 2013-09-16        kinaba: 	string begin = ".L.R.";
f0a8c39350 2013-09-16        kinaba: 	string target = ".R.L.";
f0a8c39350 2013-09-16        kinaba: 	string _ = "Impossible";
f0a8c39350 2013-09-16        kinaba: END
f0a8c39350 2013-09-16        kinaba: CASE(4)
f0a8c39350 2013-09-16        kinaba: 	string begin = "LRLLRLRLLRLLRLRLRL";
f0a8c39350 2013-09-16        kinaba: 	string target = "LRLLRLRLLRLLRLRLRL";
f0a8c39350 2013-09-16        kinaba: 	string _ = "Possible";
f0a8c39350 2013-09-16        kinaba: END
f0a8c39350 2013-09-16        kinaba: CASE(5)
f0a8c39350 2013-09-16        kinaba: 	string begin = "L";
f0a8c39350 2013-09-16        kinaba: 	string target = ".";
f0a8c39350 2013-09-16        kinaba: 	string _ = "Impossible";
f0a8c39350 2013-09-16        kinaba: END
f0a8c39350 2013-09-16        kinaba: /*
f0a8c39350 2013-09-16        kinaba: CASE(6)
f0a8c39350 2013-09-16        kinaba: 	string begin = ;
f0a8c39350 2013-09-16        kinaba: 	string target = ;
f0a8c39350 2013-09-16        kinaba: 	string _ = ;
f0a8c39350 2013-09-16        kinaba: END
f0a8c39350 2013-09-16        kinaba: CASE(7)
f0a8c39350 2013-09-16        kinaba: 	string begin = ;
f0a8c39350 2013-09-16        kinaba: 	string target = ;
f0a8c39350 2013-09-16        kinaba: 	string _ = ;
f0a8c39350 2013-09-16        kinaba: END
f0a8c39350 2013-09-16        kinaba: */
f0a8c39350 2013-09-16        kinaba: }
f0a8c39350 2013-09-16        kinaba: // END CUT HERE