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 IncreasingSubsequences { public:
4fd800b3a8 2011-02-23        kinaba: 	long long count(vector <int> a)
4fd800b3a8 2011-02-23        kinaba: 	{
4fd800b3a8 2011-02-23        kinaba: 		a.insert(a.begin(), -1);
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: 		int N = a.size();
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: 		vector< vector<int> > next(N);
4fd800b3a8 2011-02-23        kinaba: 		for(int i=0; i<N; ++i) {
4fd800b3a8 2011-02-23        kinaba: 			int L = a[i]+1;
4fd800b3a8 2011-02-23        kinaba: 			int R = INT_MAX;
4fd800b3a8 2011-02-23        kinaba: 			for(int j=i+1; j<N; ++j)
4fd800b3a8 2011-02-23        kinaba: 				if( L<=a[j] && a[j]<=R ) {
4fd800b3a8 2011-02-23        kinaba: 					next[i].push_back(j);
4fd800b3a8 2011-02-23        kinaba: 					R = a[j];
4fd800b3a8 2011-02-23        kinaba: 				}
4fd800b3a8 2011-02-23        kinaba: 		}
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: 		vector<LL> num(N);
4fd800b3a8 2011-02-23        kinaba: 		for(int i=N-1; i>=0; --i) {
4fd800b3a8 2011-02-23        kinaba: 			if( next[i].size() == 0 )
4fd800b3a8 2011-02-23        kinaba: 				num[i] = 1;
4fd800b3a8 2011-02-23        kinaba: 			else
4fd800b3a8 2011-02-23        kinaba: 				for(int j=0; j<next[i].size(); ++j)
4fd800b3a8 2011-02-23        kinaba: 					num[i] += num[next[i][j]];
4fd800b3a8 2011-02-23        kinaba: 		}
4fd800b3a8 2011-02-23        kinaba: 		return num[0];
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 long long& Expected, const long long& 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(_, IncreasingSubsequences().count(a));}
4fd800b3a8 2011-02-23        kinaba: int main(){
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: CASE(0)
4fd800b3a8 2011-02-23        kinaba: 	int a_[] = {1,3,2,6,4,5};
4fd800b3a8 2011-02-23        kinaba: 	  vector <int> a(a_, a_+sizeof(a_)/sizeof(*a_));
4fd800b3a8 2011-02-23        kinaba: 	long long _ = 4LL;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(1)
4fd800b3a8 2011-02-23        kinaba: 	int a_[] = {1000000000,100000000,10000000,1000000,100000,10000,1000,100,10,1};
4fd800b3a8 2011-02-23        kinaba: 	  vector <int> a(a_, a_+sizeof(a_)/sizeof(*a_));
4fd800b3a8 2011-02-23        kinaba: 	long long _ = 10LL;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(2)
4fd800b3a8 2011-02-23        kinaba: 	int a_[] = {1,10,100,1000,10000,100000,1000000,10000000,100000000,1000000000};
4fd800b3a8 2011-02-23        kinaba: 	  vector <int> a(a_, a_+sizeof(a_)/sizeof(*a_));
4fd800b3a8 2011-02-23        kinaba: 	long long _ = 1LL;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(3)
4fd800b3a8 2011-02-23        kinaba: 	int a_[] = {564,234,34,4365,424,2234,306,21,934,592,195,2395,2396,29345,13295423,23945,2};
4fd800b3a8 2011-02-23        kinaba: 	  vector <int> a(a_, a_+sizeof(a_)/sizeof(*a_));
4fd800b3a8 2011-02-23        kinaba: 	long long _ = 41LL;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(4)
4fd800b3a8 2011-02-23        kinaba: 	int a_[] = {1};
4fd800b3a8 2011-02-23        kinaba: 	  vector <int> a(a_, a_+sizeof(a_)/sizeof(*a_));
4fd800b3a8 2011-02-23        kinaba: 	long long _ = 1LL;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: CASE(5)
4fd800b3a8 2011-02-23        kinaba: 	int a_[] = {5,4,3,2,1};
4fd800b3a8 2011-02-23        kinaba: 	  vector <int> a(a_, a_+sizeof(a_)/sizeof(*a_));
4fd800b3a8 2011-02-23        kinaba: 	long long _ = 5LL;
4fd800b3a8 2011-02-23        kinaba: END
4fd800b3a8 2011-02-23        kinaba: 
4fd800b3a8 2011-02-23        kinaba: }
4fd800b3a8 2011-02-23        kinaba: // END CUT HERE