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 <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: 
4fd800b3a8 2011-02-23        kinaba: bool is_ps( LL v )
4fd800b3a8 2011-02-23        kinaba: {
4fd800b3a8 2011-02-23        kinaba: 	LL sv = (LL)sqrt( double(v) );
4fd800b3a8 2011-02-23        kinaba: 	return (sv-1)*(sv-1) == v
4fd800b3a8 2011-02-23        kinaba: 	    || sv*sv == v
4fd800b3a8 2011-02-23        kinaba: 	    || (sv+1)*(sv+1) == v;
4fd800b3a8 2011-02-23        kinaba: }
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: class FindingSquareInTable {
4fd800b3a8 2011-02-23        kinaba: public:
4fd800b3a8 2011-02-23        kinaba: 	int findMaximalSquare(vector <string> table)
4fd800b3a8 2011-02-23        kinaba: 	{
4fd800b3a8 2011-02-23        kinaba: 		LL ans = -1;
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: 		int Y = table.size();
4fd800b3a8 2011-02-23        kinaba: 		int X = table[0].size();
4fd800b3a8 2011-02-23        kinaba: 		for(int y=0; y<Y; ++y)
4fd800b3a8 2011-02-23        kinaba: 			for(int x=0; x<X; ++x)
4fd800b3a8 2011-02-23        kinaba: 				for(int dy=-Y; dy<Y; ++dy)
4fd800b3a8 2011-02-23        kinaba: 					for(int dx=-X; dx<X; ++dx)
4fd800b3a8 2011-02-23        kinaba: 						if(dy||dx)
4fd800b3a8 2011-02-23        kinaba: 						{
4fd800b3a8 2011-02-23        kinaba: 							LL v = 0;
4fd800b3a8 2011-02-23        kinaba: 							for(int i=0;; ++i)
4fd800b3a8 2011-02-23        kinaba: 							{
4fd800b3a8 2011-02-23        kinaba: 								int yy = y+dy*i;
4fd800b3a8 2011-02-23        kinaba: 								int xx = x+dx*i;
4fd800b3a8 2011-02-23        kinaba: 								if( xx<0 || X<=xx || yy<0 || Y<=yy )
4fd800b3a8 2011-02-23        kinaba: 									break;
4fd800b3a8 2011-02-23        kinaba: 								int d = table[yy][xx]-'0';
4fd800b3a8 2011-02-23        kinaba: 								v = v*10 + d;
4fd800b3a8 2011-02-23        kinaba: 								if( is_ps(v) )
4fd800b3a8 2011-02-23        kinaba: 									ans = max(v, ans);
4fd800b3a8 2011-02-23        kinaba: 							}
4fd800b3a8 2011-02-23        kinaba: 						}
4fd800b3a8 2011-02-23        kinaba: 		return ans;
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() { ostringstream os; os << " (" << int((clock()-start_time)/CLOCKS_PER_SEC*1000) << " msec)"; return os.str(); }
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: template <typename T> string print_array(const vector<T> &V) { ostringstream os; os << "{ "; for (typename vector<T>::const_iterator iter = V.begin(); iter != V.end(); ++iter) os << '\"' << *iter << "\","; os << " }"; return os.str(); }
4fd800b3a8 2011-02-23        kinaba: int verify_case(const int &Expected, const int &Received) { if (Expected == Received) cerr << "PASSED" << timer() << endl; else { cerr << "FAILED" << timer() << endl; cerr << "\tExpected: \"" << Expected << '\"' << endl; cerr << "\tReceived: \"" << Received << '\"' << endl; } return 0;}
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: template<int N> struct Case_ { Case_(){start_time=clock();} };
4fd800b3a8 2011-02-23        kinaba: char Test_(...);
4fd800b3a8 2011-02-23        kinaba: int Test_(Case_<0>) {
4fd800b3a8 2011-02-23        kinaba: 	string table_[] = {"123",
4fd800b3a8 2011-02-23        kinaba:  "456"};
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> table(table_, table_+sizeof(table_)/sizeof(*table_));
4fd800b3a8 2011-02-23        kinaba: 	int RetVal = 64;
4fd800b3a8 2011-02-23        kinaba: 	return verify_case(RetVal, FindingSquareInTable().findMaximalSquare(table)); }
4fd800b3a8 2011-02-23        kinaba: int Test_(Case_<1>) {
4fd800b3a8 2011-02-23        kinaba: 	string table_[] = {"00000",
4fd800b3a8 2011-02-23        kinaba:  "00000",
4fd800b3a8 2011-02-23        kinaba:  "00200",
4fd800b3a8 2011-02-23        kinaba:  "00000",
4fd800b3a8 2011-02-23        kinaba:  "00000"};
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> table(table_, table_+sizeof(table_)/sizeof(*table_));
4fd800b3a8 2011-02-23        kinaba: 	int RetVal = 0;
4fd800b3a8 2011-02-23        kinaba: 	return verify_case(RetVal, FindingSquareInTable().findMaximalSquare(table)); }
4fd800b3a8 2011-02-23        kinaba: int Test_(Case_<2>) {
4fd800b3a8 2011-02-23        kinaba: 	string table_[] = {"3791178",
4fd800b3a8 2011-02-23        kinaba:  "1283252",
4fd800b3a8 2011-02-23        kinaba:  "4103617",
4fd800b3a8 2011-02-23        kinaba:  "8233494",
4fd800b3a8 2011-02-23        kinaba:  "8725572",
4fd800b3a8 2011-02-23        kinaba:  "2937261"};
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> table(table_, table_+sizeof(table_)/sizeof(*table_));
4fd800b3a8 2011-02-23        kinaba: 	int RetVal = 320356;
4fd800b3a8 2011-02-23        kinaba: 	return verify_case(RetVal, FindingSquareInTable().findMaximalSquare(table)); }
4fd800b3a8 2011-02-23        kinaba: int Test_(Case_<3>) {
4fd800b3a8 2011-02-23        kinaba: 	string table_[] = {"135791357",
4fd800b3a8 2011-02-23        kinaba:  "357913579",
4fd800b3a8 2011-02-23        kinaba:  "579135791",
4fd800b3a8 2011-02-23        kinaba:  "791357913",
4fd800b3a8 2011-02-23        kinaba:  "913579135"}
4fd800b3a8 2011-02-23        kinaba: ;
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> table(table_, table_+sizeof(table_)/sizeof(*table_));
4fd800b3a8 2011-02-23        kinaba: 	int RetVal = 9;
4fd800b3a8 2011-02-23        kinaba: 	return verify_case(RetVal, FindingSquareInTable().findMaximalSquare(table)); }
4fd800b3a8 2011-02-23        kinaba: int Test_(Case_<4>) {
4fd800b3a8 2011-02-23        kinaba: 	string table_[] = {"553333733",
4fd800b3a8 2011-02-23        kinaba:  "775337775",
4fd800b3a8 2011-02-23        kinaba:  "777537775",
4fd800b3a8 2011-02-23        kinaba:  "777357333",
4fd800b3a8 2011-02-23        kinaba:  "755553557",
4fd800b3a8 2011-02-23        kinaba:  "355533335",
4fd800b3a8 2011-02-23        kinaba:  "373773573",
4fd800b3a8 2011-02-23        kinaba:  "337373777",
4fd800b3a8 2011-02-23        kinaba:  "775557777"};
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> table(table_, table_+sizeof(table_)/sizeof(*table_));
4fd800b3a8 2011-02-23        kinaba: 	int RetVal = -1;
4fd800b3a8 2011-02-23        kinaba: 	return verify_case(RetVal, FindingSquareInTable().findMaximalSquare(table)); }
4fd800b3a8 2011-02-23        kinaba: int Test_(Case_<5>) {
4fd800b3a8 2011-02-23        kinaba: 	string table_[] = {"257240281",
4fd800b3a8 2011-02-23        kinaba:  "197510846",
4fd800b3a8 2011-02-23        kinaba:  "014345401",
4fd800b3a8 2011-02-23        kinaba:  "035562575",
4fd800b3a8 2011-02-23        kinaba:  "974935632",
4fd800b3a8 2011-02-23        kinaba:  "865865933",
4fd800b3a8 2011-02-23        kinaba:  "684684987",
4fd800b3a8 2011-02-23        kinaba:  "768934659",
4fd800b3a8 2011-02-23        kinaba:  "287493867"};
4fd800b3a8 2011-02-23        kinaba: 	  vector <string> table(table_, table_+sizeof(table_)/sizeof(*table_));
4fd800b3a8 2011-02-23        kinaba: 	int RetVal = 95481;
4fd800b3a8 2011-02-23        kinaba: 	return verify_case(RetVal, FindingSquareInTable().findMaximalSquare(table)); }
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: template<int N> void Run_() { cerr << "Test Case #" << N << "..." << flush; Test_(Case_<N>()); Run_<sizeof(Test_(Case_<N+1>()))==1 ? -1 : N+1>(); }
4fd800b3a8 2011-02-23        kinaba: template<>      void Run_<-1>() {}
4fd800b3a8 2011-02-23        kinaba: int main() { Run_<0>(); }
4fd800b3a8 2011-02-23        kinaba: // END CUT HERE
4fd800b3a8 2011-02-23        kinaba: