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 <functional> 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: typedef complex<double> CMP; 4fd800b3a8 2011-02-23 kinaba: 4fd800b3a8 2011-02-23 kinaba: class PermutationSignature { public: 4fd800b3a8 2011-02-23 kinaba: vector <int> reconstruct(string signature) 4fd800b3a8 2011-02-23 kinaba: { 4fd800b3a8 2011-02-23 kinaba: deque<int> cur(1, 1); 4fd800b3a8 2011-02-23 kinaba: for(int i=signature.size()-1; i>=0; --i) 4fd800b3a8 2011-02-23 kinaba: { 4fd800b3a8 2011-02-23 kinaba: int ins = (signature[i]=='I' ? 1 : cur.front()+1); 4fd800b3a8 2011-02-23 kinaba: cur.push_front(ins); 4fd800b3a8 2011-02-23 kinaba: for(int k=1; k<cur.size(); ++k) 4fd800b3a8 2011-02-23 kinaba: if( cur[k] >= ins ) 4fd800b3a8 2011-02-23 kinaba: cur[k] ++; 4fd800b3a8 2011-02-23 kinaba: } 4fd800b3a8 2011-02-23 kinaba: return vector<int>(cur.begin(), cur.end()); 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() 4fd800b3a8 2011-02-23 kinaba: { ostringstream os; os << " (" << int((clock()-start_time)/CLOCKS_PER_SEC*1000) << " msec)"; return os.str(); } 4fd800b3a8 2011-02-23 kinaba: template<typename T> ostream& operator<<(ostream& os, const vector<T>& v) 4fd800b3a8 2011-02-23 kinaba: { os << "{ "; 4fd800b3a8 2011-02-23 kinaba: for(typename vector<T>::const_iterator it=v.begin(); it!=v.end(); ++it) 4fd800b3a8 2011-02-23 kinaba: os << '\"' << *it << '\"' << (it+1==v.end() ? "" : ", "); os << " }"; return os; } 4fd800b3a8 2011-02-23 kinaba: void verify_case(const vector <int>& Expected, const vector <int>& Received) { 4fd800b3a8 2011-02-23 kinaba: bool ok = (Expected == Received); 4fd800b3a8 2011-02-23 kinaba: if(ok) cerr << "PASSED" << timer() << endl; else { cerr << "FAILED" << timer() << endl; 4fd800b3a8 2011-02-23 kinaba: cerr << "\to: " << Expected << endl << "\tx: " << Received << endl; } } 4fd800b3a8 2011-02-23 kinaba: #define CASE(N) {cerr << "Test Case #" << N << "..." << flush; start_time=clock(); 4fd800b3a8 2011-02-23 kinaba: #define END verify_case(_, PermutationSignature().reconstruct(signature));} 4fd800b3a8 2011-02-23 kinaba: int main(){ 4fd800b3a8 2011-02-23 kinaba: 4fd800b3a8 2011-02-23 kinaba: CASE(0) 4fd800b3a8 2011-02-23 kinaba: string signature = "IIIII"; 4fd800b3a8 2011-02-23 kinaba: int __[] = {1, 2, 3, 4, 5, 6 }; 4fd800b3a8 2011-02-23 kinaba: vector <int> _(__, __+sizeof(__)/sizeof(*__)); 4fd800b3a8 2011-02-23 kinaba: END 4fd800b3a8 2011-02-23 kinaba: CASE(1) 4fd800b3a8 2011-02-23 kinaba: string signature = "DI"; 4fd800b3a8 2011-02-23 kinaba: int __[] = {2, 1, 3 }; 4fd800b3a8 2011-02-23 kinaba: vector <int> _(__, __+sizeof(__)/sizeof(*__)); 4fd800b3a8 2011-02-23 kinaba: END 4fd800b3a8 2011-02-23 kinaba: CASE(2) 4fd800b3a8 2011-02-23 kinaba: string signature = "IIIID"; 4fd800b3a8 2011-02-23 kinaba: int __[] = {1, 2, 3, 4, 6, 5 }; 4fd800b3a8 2011-02-23 kinaba: vector <int> _(__, __+sizeof(__)/sizeof(*__)); 4fd800b3a8 2011-02-23 kinaba: END 4fd800b3a8 2011-02-23 kinaba: CASE(3) 4fd800b3a8 2011-02-23 kinaba: string signature = "DIIDID"; 4fd800b3a8 2011-02-23 kinaba: int __[] = {2, 1, 3, 5, 4, 7, 6 }; 4fd800b3a8 2011-02-23 kinaba: vector <int> _(__, __+sizeof(__)/sizeof(*__)); 4fd800b3a8 2011-02-23 kinaba: END 4fd800b3a8 2011-02-23 kinaba: CASE(4) 4fd800b3a8 2011-02-23 kinaba: string signature = "DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD"; 4fd800b3a8 2011-02-23 kinaba: int __[] = {-1}; 4fd800b3a8 2011-02-23 kinaba: vector <int> _(__, __+sizeof(__)/sizeof(*__)); 4fd800b3a8 2011-02-23 kinaba: END 4fd800b3a8 2011-02-23 kinaba: CASE(5) 4fd800b3a8 2011-02-23 kinaba: string signature = "IDIDIDIDIDIDIDIDIDIDIDIDIDIDIDIDIDIDIDIDIDIDIDIDID"; 4fd800b3a8 2011-02-23 kinaba: int __[] = {-1}; 4fd800b3a8 2011-02-23 kinaba: vector <int> _(__, __+sizeof(__)/sizeof(*__)); 4fd800b3a8 2011-02-23 kinaba: END 4fd800b3a8 2011-02-23 kinaba: CASE(6) 4fd800b3a8 2011-02-23 kinaba: string signature = "I"; 4fd800b3a8 2011-02-23 kinaba: int __[] = {1,2}; 4fd800b3a8 2011-02-23 kinaba: vector <int> _(__, __+sizeof(__)/sizeof(*__)); 4fd800b3a8 2011-02-23 kinaba: END 4fd800b3a8 2011-02-23 kinaba: CASE(7) 4fd800b3a8 2011-02-23 kinaba: string signature = "D"; 4fd800b3a8 2011-02-23 kinaba: int __[] = {2,1}; 4fd800b3a8 2011-02-23 kinaba: vector <int> _(__, __+sizeof(__)/sizeof(*__)); 4fd800b3a8 2011-02-23 kinaba: END 4fd800b3a8 2011-02-23 kinaba: 4fd800b3a8 2011-02-23 kinaba: } 4fd800b3a8 2011-02-23 kinaba: // END CUT HERE