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: LL gcd(LL a, LL b) 4fd800b3a8 2011-02-23 kinaba: { 4fd800b3a8 2011-02-23 kinaba: while(a) 4fd800b3a8 2011-02-23 kinaba: swap(a, b%=a); 4fd800b3a8 2011-02-23 kinaba: return b; 4fd800b3a8 2011-02-23 kinaba: } 4fd800b3a8 2011-02-23 kinaba: 4fd800b3a8 2011-02-23 kinaba: LL lcm(LL a, LL b) 4fd800b3a8 2011-02-23 kinaba: { 4fd800b3a8 2011-02-23 kinaba: return a/gcd(a,b)*b; 4fd800b3a8 2011-02-23 kinaba: } 4fd800b3a8 2011-02-23 kinaba: 4fd800b3a8 2011-02-23 kinaba: class CommonMultiples { public: 4fd800b3a8 2011-02-23 kinaba: int countCommMult(vector <int> a, int lower, int upper) 4fd800b3a8 2011-02-23 kinaba: { 4fd800b3a8 2011-02-23 kinaba: LL m = 1; 4fd800b3a8 2011-02-23 kinaba: for(int i=0; i<a.size(); ++i) 4fd800b3a8 2011-02-23 kinaba: { 4fd800b3a8 2011-02-23 kinaba: m = lcm(m, a[i]); 4fd800b3a8 2011-02-23 kinaba: if( m > upper ) 4fd800b3a8 2011-02-23 kinaba: return 0; 4fd800b3a8 2011-02-23 kinaba: } 4fd800b3a8 2011-02-23 kinaba: return upper/m - (lower-1)/m; 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 int& Expected, const 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(_, CommonMultiples().countCommMult(a, lower, upper));} 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_[] = {1,2,3}; 4fd800b3a8 2011-02-23 kinaba: vector <int> a(a_, a_+sizeof(a_)/sizeof(*a_)); 4fd800b3a8 2011-02-23 kinaba: int lower = 5; 4fd800b3a8 2011-02-23 kinaba: int upper = 15; 4fd800b3a8 2011-02-23 kinaba: int _ = 2; 4fd800b3a8 2011-02-23 kinaba: END 4fd800b3a8 2011-02-23 kinaba: CASE(1) 4fd800b3a8 2011-02-23 kinaba: int a_[] = {1,2,4,8,16,32,64}; 4fd800b3a8 2011-02-23 kinaba: vector <int> a(a_, a_+sizeof(a_)/sizeof(*a_)); 4fd800b3a8 2011-02-23 kinaba: int lower = 128; 4fd800b3a8 2011-02-23 kinaba: int upper = 128; 4fd800b3a8 2011-02-23 kinaba: int _ = 1; 4fd800b3a8 2011-02-23 kinaba: END 4fd800b3a8 2011-02-23 kinaba: CASE(2) 4fd800b3a8 2011-02-23 kinaba: int a_[] = {2,3,5,7,11,13,17,19,23,29,31,37,41,43,49}; 4fd800b3a8 2011-02-23 kinaba: vector <int> a(a_, a_+sizeof(a_)/sizeof(*a_)); 4fd800b3a8 2011-02-23 kinaba: int lower = 1; 4fd800b3a8 2011-02-23 kinaba: int upper = 2000000000; 4fd800b3a8 2011-02-23 kinaba: int _ = 0; 4fd800b3a8 2011-02-23 kinaba: END 4fd800b3a8 2011-02-23 kinaba: CASE(3) 4fd800b3a8 2011-02-23 kinaba: int a_[] = {1,1,1}; 4fd800b3a8 2011-02-23 kinaba: vector <int> a(a_, a_+sizeof(a_)/sizeof(*a_)); 4fd800b3a8 2011-02-23 kinaba: int lower = 1; 4fd800b3a8 2011-02-23 kinaba: int upper = 2000000000; 4fd800b3a8 2011-02-23 kinaba: int _ = 2000000000; 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: int lower = 1; 4fd800b3a8 2011-02-23 kinaba: int upper = 1; 4fd800b3a8 2011-02-23 kinaba: int _ = 1; 4fd800b3a8 2011-02-23 kinaba: END 4fd800b3a8 2011-02-23 kinaba: CASE(5) 4fd800b3a8 2011-02-23 kinaba: int a_[] = {2,4}; 4fd800b3a8 2011-02-23 kinaba: vector <int> a(a_, a_+sizeof(a_)/sizeof(*a_)); 4fd800b3a8 2011-02-23 kinaba: int lower = 4; 4fd800b3a8 2011-02-23 kinaba: int upper = 8; 4fd800b3a8 2011-02-23 kinaba: int _ = 2; 4fd800b3a8 2011-02-23 kinaba: END 4fd800b3a8 2011-02-23 kinaba: 4fd800b3a8 2011-02-23 kinaba: } 4fd800b3a8 2011-02-23 kinaba: // END CUT HERE