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: using namespace std; 4fd800b3a8 2011-02-23 kinaba: typedef long long LL; 4fd800b3a8 2011-02-23 kinaba: 4fd800b3a8 2011-02-23 kinaba: class CDPlayer 4fd800b3a8 2011-02-23 kinaba: { 4fd800b3a8 2011-02-23 kinaba: public: 4fd800b3a8 2011-02-23 kinaba: int isRandom(vector <string> songlist, int n) 4fd800b3a8 2011-02-23 kinaba: { 4fd800b3a8 2011-02-23 kinaba: string s; 4fd800b3a8 2011-02-23 kinaba: for(int i=0; i<songlist.size(); ++i) 4fd800b3a8 2011-02-23 kinaba: s += songlist[i]; 4fd800b3a8 2011-02-23 kinaba: 4fd800b3a8 2011-02-23 kinaba: for(int k=0; k<n; ++k) 4fd800b3a8 2011-02-23 kinaba: if( check(s, k, n) ) 4fd800b3a8 2011-02-23 kinaba: return k; 4fd800b3a8 2011-02-23 kinaba: return -1; 4fd800b3a8 2011-02-23 kinaba: } 4fd800b3a8 2011-02-23 kinaba: 4fd800b3a8 2011-02-23 kinaba: bool check(const string& s, int k, int n) 4fd800b3a8 2011-02-23 kinaba: { 4fd800b3a8 2011-02-23 kinaba: for(int i=0,e=k; i<s.size(); i=e,e+=n) 4fd800b3a8 2011-02-23 kinaba: if( !distinct(s, i, min<int>(e,s.size())) ) 4fd800b3a8 2011-02-23 kinaba: return false; 4fd800b3a8 2011-02-23 kinaba: return true; 4fd800b3a8 2011-02-23 kinaba: } 4fd800b3a8 2011-02-23 kinaba: 4fd800b3a8 2011-02-23 kinaba: bool distinct( const string& s, int i, int e ) 4fd800b3a8 2011-02-23 kinaba: { 4fd800b3a8 2011-02-23 kinaba: set<char> x; 4fd800b3a8 2011-02-23 kinaba: for(; i<e; ++i) 4fd800b3a8 2011-02-23 kinaba: if( x.count(s[i]) ) 4fd800b3a8 2011-02-23 kinaba: return false; 4fd800b3a8 2011-02-23 kinaba: else 4fd800b3a8 2011-02-23 kinaba: x.insert( s[i] ); 4fd800b3a8 2011-02-23 kinaba: return true; 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: public: 4fd800b3a8 2011-02-23 kinaba: void run_test(int Case) { if ((Case == -1) || (Case == 0)) test_case_0(); if ((Case == -1) || (Case == 1)) test_case_1(); if ((Case == -1) || (Case == 2)) test_case_2(); if ((Case == -1) || (Case == 3)) test_case_3(); if ((Case == -1) || (Case == 4)) test_case_4(); if ((Case == -1) || (Case == 5)) test_case_5(); if ((Case == -1) || (Case == 6)) test_case_6(); } 4fd800b3a8 2011-02-23 kinaba: private: 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: void verify_case(int Case, const int &Expected, const int &Received) { cerr << "Test Case #" << Case << "..."; if (Expected == Received) cerr << "PASSED" << endl; else { cerr << "FAILED" << endl; cerr << "\tExpected: \"" << Expected << '\"' << endl; cerr << "\tReceived: \"" << Received << '\"' << endl; } } 4fd800b3a8 2011-02-23 kinaba: void test_case_0() { string Arr0[] = {"BBAC"}; vector <string> Arg0(Arr0, Arr0 + (sizeof(Arr0) / sizeof(Arr0[0]))); int Arg1 = 3; int Arg2 = 1; verify_case(0, Arg2, isRandom(Arg0, Arg1)); } 4fd800b3a8 2011-02-23 kinaba: void test_case_1() { string Arr0[] = {"BACAB", 4fd800b3a8 2011-02-23 kinaba: "BCA"}; vector <string> Arg0(Arr0, Arr0 + (sizeof(Arr0) / sizeof(Arr0[0]))); int Arg1 = 3; int Arg2 = 2; verify_case(1, Arg2, isRandom(Arg0, Arg1)); } 4fd800b3a8 2011-02-23 kinaba: void test_case_2() { string Arr0[] = {"AAACBACBACBACBACBACBACB"}; vector <string> Arg0(Arr0, Arr0 + (sizeof(Arr0) / sizeof(Arr0[0]))); int Arg1 = 3; int Arg2 = -1; verify_case(2, Arg2, isRandom(Arg0, Arg1)); } 4fd800b3a8 2011-02-23 kinaba: void test_case_3() { string Arr0[] = {"ABCDEABDECBAECDEDACB"}; vector <string> Arg0(Arr0, Arr0 + (sizeof(Arr0) / sizeof(Arr0[0]))); int Arg1 = 5; int Arg2 = 0; verify_case(3, Arg2, isRandom(Arg0, Arg1)); } 4fd800b3a8 2011-02-23 kinaba: void test_case_4() { string Arr0[] = {"ABCABCABCABCABCABCABC", 4fd800b3a8 2011-02-23 kinaba: "ABCABCABCABCABCABCABC"}; vector <string> Arg0(Arr0, Arr0 + (sizeof(Arr0) / sizeof(Arr0[0]))); int Arg1 = 22; int Arg2 = -1; verify_case(4, Arg2, isRandom(Arg0, Arg1)); } 4fd800b3a8 2011-02-23 kinaba: void test_case_5() { string Arr0[] = {"AAAAAAAAAAAAAAAA", 4fd800b3a8 2011-02-23 kinaba: "AAAAAAAAAAAAAAAA", 4fd800b3a8 2011-02-23 kinaba: "AAAAAAAAAAAAAAAA", 4fd800b3a8 2011-02-23 kinaba: "AAAAAAAAAAAAAAAA", 4fd800b3a8 2011-02-23 kinaba: "AAAAAAAAAAAAAAAA", 4fd800b3a8 2011-02-23 kinaba: "AAAAAAAAAAAAAAAA", 4fd800b3a8 2011-02-23 kinaba: "AAAAAAAAAAAAAAAA", 4fd800b3a8 2011-02-23 kinaba: "AAAAAAAAAAAAAAAA", 4fd800b3a8 2011-02-23 kinaba: "AAAAAAAAAAAAAAAA", 4fd800b3a8 2011-02-23 kinaba: "AAAAAAAAAAAAAAAA"}; vector <string> Arg0(Arr0, Arr0 + (sizeof(Arr0) / sizeof(Arr0[0]))); int Arg1 = 1; int Arg2 = 0; verify_case(5, Arg2, isRandom(Arg0, Arg1)); } 4fd800b3a8 2011-02-23 kinaba: void test_case_6() { string Arr0[] = {"ADEF"}; vector <string> Arg0(Arr0, Arr0 + (sizeof(Arr0) / sizeof(Arr0[0]))); int Arg1 = 12; int Arg2 = 0; verify_case(6, Arg2, isRandom(Arg0, Arg1)); } 4fd800b3a8 2011-02-23 kinaba: 4fd800b3a8 2011-02-23 kinaba: // END CUT HERE 4fd800b3a8 2011-02-23 kinaba: }; 4fd800b3a8 2011-02-23 kinaba: // BEGIN CUT HERE 4fd800b3a8 2011-02-23 kinaba: int main() { 4fd800b3a8 2011-02-23 kinaba: CDPlayer().run_test(-1); 4fd800b3a8 2011-02-23 kinaba: } 4fd800b3a8 2011-02-23 kinaba: // END CUT HERE