結果
| 問題 |
No.979 Longest Divisor Sequence
|
| ユーザー |
kei
|
| 提出日時 | 2020-01-31 21:48:34 |
| 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 | 2,738 bytes |
| コンパイル時間 | 1,631 ms |
| コンパイル使用メモリ | 184,476 KB |
| 実行使用メモリ | 20,316 KB |
| 最終ジャッジ日時 | 2024-09-17 07:38:21 |
| 合計ジャッジ時間 | 5,013 ms |
|
ジャッジサーバーID (参考情報) |
judge6 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 15 TLE * 1 |
ソースコード
#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int INF = 1e9;
const ll LINF = 1e18;
template<class S,class T> ostream& operator << (ostream& out,const pair<S,T>& o){ out << "(" << o.first << "," << o.second << ")"; return out; }
template<class T> ostream& operator << (ostream& out,const vector<T>& V){ for(int i = 0; i < V.size(); i++){ out << V[i]; if(i!=V.size()-1) out << " ";} return out; }
template<class T> ostream& operator << (ostream& out,const vector<vector<T> >& Mat){ for(int i = 0; i < Mat.size(); i++) { if(i != 0) out << endl; out << Mat[i];} return out; }
template<class S,class T> ostream& operator << (ostream& out,const map<S,T>& mp){ out << "{ "; for(auto it = mp.begin(); it != mp.end(); it++){ out << it->first << ":" << it->second; if(mp.size()-1 != distance(mp.begin(),it)) out << ", "; } out << " }"; return out; }
template<typename T>vector<T> make_v(size_t a){return vector<T>(a);}
template<typename T,typename... Ts>auto make_v(size_t a,Ts... ts){return vector<decltype(make_v<T>(ts...))>(a,make_v<T>(ts...));}
template<typename T,typename V> typename enable_if<is_class<T>::value==0>::type fill_v(T &t,const V &v){t=v;}
template<typename T,typename V> typename enable_if<is_class<T>::value!=0>::type fill_v(T &t,const V &v){for(auto &e:t) fill_v(e,v);}
/*
<url:>
問題文============================================================
=================================================================
解説=============================================================
================================================================
*/
// nの約数を列挙する
vector<ll> getdivisor(ll n){
vector<ll> res;
for(ll i = 1; i*i <= n;i++){
if(n%i == 0) {
res.push_back(i);
if(n/i != i) res.push_back(n/i);
}
}
sort(res.begin(),res.end());
return res;
}
template<class Type>
Type solve(Type res = Type()){
ll N; cin >> N;
vector<ll> A(N); for(auto& in:A) cin >> in;
// vector<vector<ll>> Divisors(N);
// for(int i = 0; i < N;i++){
// Divisors[i] = getdivisor(A[i]);
// }
map<ll,ll> mp;
for(int i = 0; i < N;i++){
if(A[i] == 1){
mp[1] = 1;
res = max(res,1LL);
continue;
}
auto divisor = getdivisor(A[i]);
ll& ref = mp[A[i]];
for(int j = 0; j < divisor.size()-1; j++){
ref = max(ref,mp[divisor[j]]+1);
}
res = max(res,ref);
}
return res;
}
int main(void) {
cin.tie(0); ios::sync_with_stdio(false);
//solve<ll>(0);
cout << fixed << setprecision(12) << solve<ll>() << endl;
return 0;
}
kei