結果
| 問題 |
No.1737 One to N
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2021-11-12 21:38:04 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 3 ms / 2,000 ms |
| コード長 | 2,513 bytes |
| コンパイル時間 | 3,771 ms |
| コンパイル使用メモリ | 255,244 KB |
| 最終ジャッジ日時 | 2025-01-25 16:02:57 |
|
ジャッジサーバーID (参考情報) |
judge3 / judge1 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 27 |
ソースコード
#include <atcoder/all>
using namespace atcoder;
#include <bits/stdc++.h>
#define all(a) (a.begin()),(a.end())
#define rall(a) (a.rbegin()),(a.rend())
using namespace std;
using ll=long long;
using ld=long double;
using pll=pair<ll,ll>;
template<class T>bool chmax(T &a, const T &b) {if(a<b) {a=b; return 1;} return 0;}
template<class T>bool chmin(T &a, const T &b) {if(b<a) {a=b; return 1;} return 0;}
istream& operator >> (istream& is, modint1000000007& x) { unsigned int t; is >> t; x=t; return is; }
istream& operator >> (istream& is, modint998244353& x) { unsigned int t; is >> t; x=t; return is; }
istream& operator >> (istream& is, modint& x) { unsigned int t; is >> t; x=t; return is; }
ostream& operator << (ostream& os, const modint1000000007& x) { os << x.val(); return os; }
ostream& operator << (ostream& os, const modint998244353& x) { os << x.val(); return os; }
ostream& operator << (ostream& os, const modint& x) { os << x.val(); return os; }
template<class T1, class T2>istream& operator >> (istream& is, pair<T1,T2>& p) { is >> p.first >> p.second; return is; }
template<class T1, class T2>ostream& operator << (ostream& os, const pair<T1,T2>& p) { os << p.first << " " << p.second; return os;}
template<class T>istream& operator >> (istream& is, vector<T>& v) { for(T& x:v) is >> x; return is; }
template<class T>ostream& operator << (ostream& os, const vector<T>& v) {for(int i=0;i<v.size();i++) {os << v[i] << (i+1 == v.size() ? "":" ");} return os;}
template<class... A> void pt() { std::cout << "\n"; }
template<class... A> void pt_rest() { std::cout << "\n"; }
template<class T, class... A> void pt_rest(const T& first, const A&... rest) { std::cout << " " << first; pt_rest(rest...); }
template<class T, class... A> void pt(const T& first, const A&... rest) { std::cout << first; pt_rest(rest...); }
static const ll INF=1e18+7;
static const double PI=acos(-1);
static const double EPS=1e-10;
using v1=vector<ll>;
using v2=vector<v1>;
using v3=vector<v2>;
v1 get_divisors(ll n){
v1 res;
for(ll i=1;i*i<=n;i++){
if(n%i)continue;
res.push_back(i);
if(n/i!=i)res.push_back(n/i);
}
sort(all(res));
return res;
}
int main(void) {
cin.tie(nullptr);
ios::sync_with_stdio(false);
ll N;cin>>N;
v1 div=get_divisors(N);
v1 mem(N+1,-1);
function<ll(ll)>rec=[&](ll x)->ll{
if(x==N)return 0;
if(mem[x]!=-1)return mem[x];
ll res=INF;
for(auto k:div)if(k>1 and x*k<=N)chmin(res,rec(x*k)+k);
return mem[x]=res;
};
pt(rec(1));
}