Artifact 9236182d8721831100803e0a6efa6467256df5cf
#include <iostream>
#include <sstream>
#include <iomanip>
#include <vector>
#include <string>
#include <map>
#include <set>
#include <algorithm>
#include <numeric>
#include <iterator>
#include <functional>
#include <complex>
#include <queue>
#include <stack>
#include <cmath>
#include <cassert>
#include <cstring>
using namespace std;
typedef long long LL;
typedef complex<double> CMP;
class NetworkXMessageRecovery { public:
string recover(vector <string> messages)
{
map< char, set<char> > prev;
for(int i=0; i<messages.size(); ++i) {
prev[messages[i][0]];
for(int j=0; j+1<messages[i].size(); ++j)
prev[messages[i][j+1]].insert(messages[i][j]);
}
string result;
while( !prev.empty() )
{
set<char> cand;
for(map< char,set<char> >::iterator it=prev.begin(); it!=prev.end(); ++it)
if( it->second.empty() )
cand.insert(it->first);
char c = *cand.begin();
result += c;
for(map< char,set<char> >::iterator it=prev.begin(); it!=prev.end(); ++it)
it->second.erase(c);
prev.erase(c);
}
return result;
}
};
// BEGIN CUT HERE
#include <ctime>
double start_time; string timer()
{ ostringstream os; os << " (" << int((clock()-start_time)/CLOCKS_PER_SEC*1000) << " msec)"; return os.str(); }
template<typename T> ostream& operator<<(ostream& os, const vector<T>& v)
{ os << "{ ";
for(typename vector<T>::const_iterator it=v.begin(); it!=v.end(); ++it)
os << '\"' << *it << '\"' << (it+1==v.end() ? "" : ", "); os << " }"; return os; }
void verify_case(const string& Expected, const string& Received) {
bool ok = (Expected == Received);
if(ok) cerr << "PASSED" << timer() << endl; else { cerr << "FAILED" << timer() << endl;
cerr << "\to: \"" << Expected << '\"' << endl << "\tx: \"" << Received << '\"' << endl; } }
#define CASE(N) {cerr << "Test Case #" << N << "..." << flush; start_time=clock();
#define END verify_case(_, NetworkXMessageRecovery().recover(messages));}
int main(){
CASE(0)
string messages_[] = {"acd", "bce"};
vector <string> messages(messages_, messages_+sizeof(messages_)/sizeof(*messages_));
string _ = "abcde";
END
CASE(1)
string messages_[] = {"ed", "dc", "cb", "ba"};
vector <string> messages(messages_, messages_+sizeof(messages_)/sizeof(*messages_));
string _ = "edcba";
END
CASE(2)
string messages_[] = {"Fox", "Ciel", "FoxCiel"};
vector <string> messages(messages_, messages_+sizeof(messages_)/sizeof(*messages_));
string _ = "FoxCiel";
END
CASE(3)
string messages_[] = {"a", "A"};
vector <string> messages(messages_, messages_+sizeof(messages_)/sizeof(*messages_));
string _ = "Aa";
END
/*
CASE(4)
string messages_[] = ;
vector <string> messages(messages_, messages_+sizeof(messages_)/sizeof(*messages_));
string _ = ;
END
CASE(5)
string messages_[] = ;
vector <string> messages(messages_, messages_+sizeof(messages_)/sizeof(*messages_));
string _ = ;
END
*/
}
// END CUT HERE