結果
| 問題 |
No.917 Make One With GCD
|
| ユーザー |
|
| 提出日時 | 2019-09-13 00:32:25 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
TLE
(最新)
AC
(最初)
|
| 実行時間 | - |
| コード長 | 2,650 bytes |
| コンパイル時間 | 1,833 ms |
| コンパイル使用メモリ | 184,596 KB |
| 実行使用メモリ | 16,952 KB |
| 最終ジャッジ日時 | 2024-07-02 17:20:08 |
| 合計ジャッジ時間 | 8,297 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | -- * 4 |
| other | TLE * 1 -- * 31 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
template <class T, class U>ostream &operator<<(ostream &o, const map<T, U>&obj) {o << "{"; for (auto &x : obj) o << " {" << x.first << " : " << x.second << "}" << ","; o << " }"; return o;}
template <class T>ostream &operator<<(ostream &o, const set<T>&obj) {o << "{"; for (auto itr = obj.begin(); itr != obj.end(); ++itr) o << (itr != obj.begin() ? ", " : "") << *itr; o << "}"; return o;}
template <class T>ostream &operator<<(ostream &o, const multiset<T>&obj) {o << "{"; for (auto itr = obj.begin(); itr != obj.end(); ++itr) o << (itr != obj.begin() ? ", " : "") << *itr; o << "}"; return o;}
template <class T>ostream &operator<<(ostream &o, const vector<T>&obj) {o << "{"; for (int i = 0; i < (int)obj.size(); ++i)o << (i > 0 ? ", " : "") << obj[i]; o << "}"; return o;}
template <class T, class U>ostream &operator<<(ostream &o, const pair<T, U>&obj) {o << "{" << obj.first << ", " << obj.second << "}"; return o;}
template <template <class tmp> class T, class U> ostream &operator<<(ostream &o, const T<U> &obj) {o << "{"; for (auto itr = obj.begin(); itr != obj.end(); ++itr)o << (itr != obj.begin() ? ", " : "") << *itr; o << "}"; return o;}
void print(void) {cout << endl;}
template <class Head> void print(Head&& head) {cout << head;print();}
template <class Head, class... Tail> void print(Head&& head, Tail&&... tail) {cout << head << " ";print(forward<Tail>(tail)...);}
//divisor O(sqrt(N))
set<long long> Divisor(long long N) {
set<long long> ret;
for (long long i = 1; i*i <= N; ++i) {
if (N%i == 0) {
ret.insert(i);
ret.insert(N / i);
}
}
return ret;
}
//Greatest Common Divisor
long long GCD(long long a, long long b) {
return ((b == 0) ? a : GCD(b, a % b));
}
//半分全列挙解法
int main() {
cin.tie(0);ios::sync_with_stdio(false);
int N,MAX_A = 1000; cin >> N;
vector<int> A(N);
for(int i = 0; i < N; ++i) cin >> A[i];
if(N==1){
cout << (A[0]==1) << endl;
return 0;
}
vector<int> L,R;
for(int i = 0; i < N/2; ++i) L.push_back(A[i]);
for(int i = N/2; i < N; ++i) R.push_back(A[i]);
map<int,long long> cntL,cntR;
int NL = L.size(), NR = R.size();
for(int i = 1; i < (1<<NL); ++i){
int cnt = 0;
for(int j = 0; j < NL; ++j) if(i&(1<<j)) cnt = GCD(cnt,A[j]);
cntL[cnt]++;
}
for(int i = 1; i < (1<<NR); ++i){
int cnt = 0;
for(int j = 0; j < NR; ++j) if(i&(1<<j)) cnt = GCD(cnt,A[j+(N/2)]);
cntR[cnt]++;
}
long long ans = cntL[1]+cntR[1];
for(auto& e1:cntL){
for(auto& e2:cntR){
if(GCD(e1.first,e2.first)==1) ans += e1.second*e2.second;
}
}
cout << ans << endl;
return 0;
}